message stringlengths 2 16.2k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 575 109k | cluster float64 16 16 | __index_level_0__ int64 1.15k 217k |
|---|---|---|---|---|---|
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,250 | 16 | 54,500 |
"Correct Solution:
```
N, = map(int, input().split())
G = [set() for _ in range(N+1)]
for i in range(N-1):
A, B = map(int, input().split())
G[A].add(B)
G[B].add(A)
path = []
stack = [1]
vs = set()
while stack:
v = stack.pop()
if v > 0:
vs.add(v)
path.append(v)
for u in G[v]:... | output | 1 | 27,250 | 16 | 54,501 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,251 | 16 | 54,502 |
"Correct Solution:
```
from collections import Counter
N = int(input())
graph =[[] for _ in range(N + 1)]
visited = [None] * (N + 1)
for _ in range(N - 1):
a, b = map(int, input().split())
graph[a].append(b)
graph[b].append(a)
v = 1
adv_v = N
update = True
labels = [0, 1]
vs = [v, adv_v]
prev_vs = [-1, ... | output | 1 | 27,251 | 16 | 54,503 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,252 | 16 | 54,504 |
"Correct Solution:
```
from collections import deque
n = int(input())
board = [0]*n
edge = [[] for i in range(n)]
for i in range(n-1):
a,b = map(int, input().split())
edge[a-1].append(b-1)
edge[b-1].append(a-1)
q = deque()
q.append((0,1))
q.append((-1,-1))
while q:
from_, color = q.popleft()
if boar... | output | 1 | 27,252 | 16 | 54,505 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,253 | 16 | 54,506 |
"Correct Solution:
```
# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline
n,*ab = map(int,read().split())
m = iter(ab)
g = [[] for _ in range(n)]
for a,b in zip(m,m):
g[a-1].append(b-1)
g[b-1].append(a-1)
def dist(g,start):
n = len(g)
dist = [-1]*n
q ... | output | 1 | 27,253 | 16 | 54,507 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,254 | 16 | 54,508 |
"Correct Solution:
```
N=int(input())
edge=[list(map(int,input().split())) for i in range(N-1)]
inf=10**20
c=[[] for i in range(N)]
for i,j in edge:
c[i-1].append(j-1)
c[j-1].append(i-1)
d=[0]+[inf]*(N-1)
v=[0]*N
import sys
sys.setrecursionlimit(10**6)
def dfs(p,v,d):
for n in c[p]:
if v[n]==0:
... | output | 1 | 27,254 | 16 | 54,509 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,255 | 16 | 54,510 |
"Correct Solution:
```
#!/usr/bin/env python3
import sys
from collections import deque
inf = float('inf')
def solve(N: int, a: "List[int]", b: "List[int]"):
adj = [set() for _ in range(N)]
for u, v in zip(a, b):
adj[u].add(v)
adj[v].add(u)
dist_F = [inf for _ in range(N)]
dist_F[... | output | 1 | 27,255 | 16 | 54,511 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,256 | 16 | 54,512 |
"Correct Solution:
```
import sys
sys.setrecursionlimit(2000000)
n = int(input())
p = []
for i in range(n-1):
p.append(list(map(int, input().split()))+ [1])
l = [[] for i in range(n+1)]
for pi in p:
l[pi[0]].append([pi[0],pi[1]])
l[pi[1]].append([pi[1],pi[0]])
kyo = [float("inf")]*(n+1)
kyo[1] = 0
memo = [... | output | 1 | 27,256 | 16 | 54,513 |
Provide a correct Python 3 solution for this coding contest problem.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road. Every cell can be reached from every other cell by rep... | instruction | 0 | 27,257 | 16 | 54,514 |
"Correct Solution:
```
N = int(input())
ab = [[int(_) for _ in input().split()] for n in range(N - 1)]
from collections import defaultdict
ns = defaultdict(list)
for a, b in ab:
ns[a].append(b)
ns[b].append(a)
from heapq import *
queue = []
heappush(queue, (0, 1))
heappush(queue, (1, N))
colors = defaultd... | output | 1 | 27,257 | 16 | 54,515 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,258 | 16 | 54,516 |
Yes | output | 1 | 27,258 | 16 | 54,517 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,259 | 16 | 54,518 |
Yes | output | 1 | 27,259 | 16 | 54,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,260 | 16 | 54,520 |
Yes | output | 1 | 27,260 | 16 | 54,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,261 | 16 | 54,522 |
Yes | output | 1 | 27,261 | 16 | 54,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,262 | 16 | 54,524 |
No | output | 1 | 27,262 | 16 | 54,525 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,263 | 16 | 54,526 |
No | output | 1 | 27,263 | 16 | 54,527 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,264 | 16 | 54,528 |
No | output | 1 | 27,264 | 16 | 54,529 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Fennec and Snuke are playing a board game.
On the board, there are N cells numbered 1 through N, and N-1 roads, each connecting two cells. Cell a_i is adjacent to Cell b_i through the i-th road... | instruction | 0 | 27,265 | 16 | 54,530 |
No | output | 1 | 27,265 | 16 | 54,531 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,266 | 16 | 54,532 |
"Correct Solution:
```
input()
k=len(set(map(int,input().split())))
print(k if k%2 else k-1)
``` | output | 1 | 27,266 | 16 | 54,533 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,267 | 16 | 54,534 |
"Correct Solution:
```
N=input()
A=list(map(int,input().split()))
if len(set(A))%2==0:
ans=len(set(A))-1
else:
ans=len(set(A))
print(ans)
``` | output | 1 | 27,267 | 16 | 54,535 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,268 | 16 | 54,536 |
"Correct Solution:
```
input();a=len(set(input().split()));print(a-1+a%2)
``` | output | 1 | 27,268 | 16 | 54,537 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,269 | 16 | 54,538 |
"Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
a = set(a)
if len(a) % 2 == 0:
print(len(a) - 1)
else:
print(len(a))
``` | output | 1 | 27,269 | 16 | 54,539 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,270 | 16 | 54,540 |
"Correct Solution:
```
N = int(input())
A = [int(i) for i in input().split()]
l = len(set(A))
print(l - (N - l) % 2)
``` | output | 1 | 27,270 | 16 | 54,541 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,271 | 16 | 54,542 |
"Correct Solution:
```
N = int(input())
A = list(map(int, input().split()))
s = set(A)
if len(s)%2 == 0:
ans = len(s)-1
else:
ans = len(s)
print(ans)
``` | output | 1 | 27,271 | 16 | 54,543 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,272 | 16 | 54,544 |
"Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
aset = set(a)
if (n-len(aset)) % 2 == 0:
print(len(aset))
else:
print(len(aset)-1)
``` | output | 1 | 27,272 | 16 | 54,545 |
Provide a correct Python 3 solution for this coding contest problem.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero or more times, so that the values written on the remainin... | instruction | 0 | 27,273 | 16 | 54,546 |
"Correct Solution:
```
N = int(input())
nums = list(map(int, input().split()))
unit = set(nums)
if len(unit)%2 == 0:
print(len(unit)-1)
else:
print(len(unit))
``` | output | 1 | 27,273 | 16 | 54,547 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,274 | 16 | 54,548 |
Yes | output | 1 | 27,274 | 16 | 54,549 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,275 | 16 | 54,550 |
Yes | output | 1 | 27,275 | 16 | 54,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,276 | 16 | 54,552 |
Yes | output | 1 | 27,276 | 16 | 54,553 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,277 | 16 | 54,554 |
Yes | output | 1 | 27,277 | 16 | 54,555 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,278 | 16 | 54,556 |
No | output | 1 | 27,278 | 16 | 54,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,279 | 16 | 54,558 |
No | output | 1 | 27,279 | 16 | 54,559 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,280 | 16 | 54,560 |
No | output | 1 | 27,280 | 16 | 54,561 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Snuke has decided to play a game using cards. He has a deck consisting of N cards. On the i-th card from the top, an integer A_i is written.
He will perform the operation described below zero o... | instruction | 0 | 27,281 | 16 | 54,562 |
No | output | 1 | 27,281 | 16 | 54,563 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a bridge that connects the left and right banks of a river. There are 2 N doors placed at different positions on this bridge, painted in some colors. The colors of the doors are represe... | instruction | 0 | 28,112 | 16 | 56,224 |
No | output | 1 | 28,112 | 16 | 56,225 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There is a bridge that connects the left and right banks of a river. There are 2 N doors placed at different positions on this bridge, painted in some colors. The colors of the doors are represe... | instruction | 0 | 28,113 | 16 | 56,226 |
No | output | 1 | 28,113 | 16 | 56,227 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,972 | 16 | 57,944 |
"Correct Solution:
```
n = int(input())
a = []
for i in range(3):
aa = list(map(int,input().split()))
a.append(aa)
for i in range(n):
x,y,z = a[0][i],a[1][i],a[2][i]
x,z = x-y,z-y
if i % 2 == 0:
if y % 6 != 2:
print("No")
exit()
else:
if y % 6 != 5:
... | output | 1 | 28,972 | 16 | 57,945 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,973 | 16 | 57,946 |
"Correct Solution:
```
def merge_and_count_rec(A, W, l, r):
if l+1 >= r:
return 0
m = (l+r)//2
cnt = merge_and_count_rec(A, W, l, m)
cnt += merge_and_count_rec(A, W, m, r)
i,j,k = l,m,l
while i<m and j<r:
if A[i]<=A[j]:
W[k] = A[i]
i+=1
else:
... | output | 1 | 28,973 | 16 | 57,947 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,974 | 16 | 57,948 |
"Correct Solution:
```
class BIT():
def __init__(self,n):
self.BIT=[0]*(n+1)
self.num=n
def query(self,idx):
res_sum = 0
while idx > 0:
res_sum += self.BIT[idx]
idx -= idx&(-idx)
return res_sum
#Ai += x O(logN)
def update(self,idx,x):
... | output | 1 | 28,974 | 16 | 57,949 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,975 | 16 | 57,950 |
"Correct Solution:
```
import sys
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split())) #空白あり
N = I()
a = [LI() for i in range(3)]
A = []
B = []
c = 0
d = 0
for i in range(N):
if i % 2 == 0:
if a[0][i] % 6 == 1 and a[1][i] % 6 == 2 and a... | output | 1 | 28,975 | 16 | 57,951 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,976 | 16 | 57,952 |
"Correct Solution:
```
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
from operator import itemgetter, mul
from functools import reduce
N = int(readline())
A = list(map(int,readline().split()))
B = list(map(int,readline().split()))
C = list(map(int,... | output | 1 | 28,976 | 16 | 57,953 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,977 | 16 | 57,954 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
n = int(input())
a = [list(map(int, input().split())) for _ in range(3)]
for j in range(n):
if not ((a[0][j] - 1 == a[1][j] and a[2][j] + 1 == a[1][j]) or (a[0][j] + 1 == a[1][j] and a[2][j] - 1 == a[1][j])):
print("No")
exit()
for j in... | output | 1 | 28,977 | 16 | 57,955 |
Provide a correct Python 3 solution for this coding contest problem.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
Snuke can perform the following operation any number of ... | instruction | 0 | 28,978 | 16 | 57,956 |
"Correct Solution:
```
"""
https://atcoder.jp/contests/agc006/tasks/agc006_e
まず、ちゃんと並んでない場合はだめ
3x+0
3x+1
3x+2
またはこれが上下反転されているもの以外が存在したら即NO
これを xと表すことにする。上下反転を-xと表すこととする
すると初期状態はxで表すと
1,2,3,4,5…,N となる。
操作は、連続する3つを選び、両端を入れ替え、3つの項に-1を掛ける
となる。
そのため、偶奇が違う数があるとout
次に転倒数を考える。転倒数は交換するたびに1減る or 1増える
偶奇番目を分けて考える
交換すると、両端の... | output | 1 | 28,978 | 16 | 57,957 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
... | instruction | 0 | 28,979 | 16 | 57,958 |
No | output | 1 | 28,979 | 16 | 57,959 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a grid with 3 rows and N columns. The cell at the i-th row and j-th column is denoted (i, j). Initially, each cell (i, j) contains the integer i+3j-3.
<image>
A grid with N=5 columns
... | instruction | 0 | 28,980 | 16 | 57,960 |
No | output | 1 | 28,980 | 16 | 57,961 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,823 | 16 | 59,646 |
"Correct Solution:
```
from collections import defaultdict, deque, Counter
from heapq import heappush, heappop, heapify
import math
import bisect
import random
from itertools import permutations, accumulate, combinations, product
import sys
import string
from bisect import bisect_left, bisect_right
from math import fac... | output | 1 | 29,823 | 16 | 59,647 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,824 | 16 | 59,648 |
"Correct Solution:
```
from collections import defaultdict, deque, Counter
from heapq import heappush, heappop, heapify
import math
import bisect
import random
from itertools import permutations, accumulate, combinations, product
import sys
import string
from bisect import bisect_left, bisect_right
from math import fac... | output | 1 | 29,824 | 16 | 59,649 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,825 | 16 | 59,650 |
"Correct Solution:
```
import sys
#sys.stdin=open("data.txt")
input=sys.stdin.readline
MOD=10**9+7
def powmod(b,e):
global MOD
if e==0: return 1
if e&1: return (powmod((b*b)%MOD,e//2)*b)%MOD
return powmod((b*b)%MOD,e//2)
n=int(input())
h=[1]+list(map(int,input().split()))
"""
# naive solution, O(su... | output | 1 | 29,825 | 16 | 59,651 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,826 | 16 | 59,652 |
"Correct Solution:
```
mod=10**9+7
n=int(input())
H=list(map(int,input().split()))
def solve(h):
if not h:
return 1
elif len(h)==1:
return pow(2,h[0],mod)
N=len(h)
a=[h[i] for i in range(N)]
a=list(set(a))
a.sort()
comp={i:e+1 for e,i in enumerate(a)}
data={comp[e]:e for... | output | 1 | 29,826 | 16 | 59,653 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,827 | 16 | 59,654 |
"Correct Solution:
```
"""
https://atcoder.jp/contests/agc026/tasks/agc026_d
10101100011
01010011100
→1列目を決めたとする
→2列目の置き方は、左端を決めればすべて決まる
偶数列目を反転してみる？
10 → 11
01 00
10 → 11
10 11
すなわち、偶数列目が反転して表示されるとすると
全て01を入れ替える or 全てそのまま しか許されない
→すべてそのままが可能なのは全て0 or 1のときのみ
dp[i][0][X] = i列目の下からX個まですべて0の時の通り数
dp[i][1][X... | output | 1 | 29,827 | 16 | 59,655 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,828 | 16 | 59,656 |
"Correct Solution:
```
from collections import defaultdict, deque, Counter
from heapq import heappush, heappop, heapify
import math
import bisect
import random
from itertools import permutations, accumulate, combinations, product
import sys
import string
from bisect import bisect_left, bisect_right
from math import fac... | output | 1 | 29,828 | 16 | 59,657 |
Provide a correct Python 3 solution for this coding contest problem.
Let us consider a grid of squares with 10^9 rows and N columns. Let (i, j) be the square at the i-th column (1 \leq i \leq N) from the left and j-th row (1 \leq j \leq 10^9) from the bottom.
Snuke has cut out some part of the grid so that, for each ... | instruction | 0 | 29,829 | 16 | 59,658 |
"Correct Solution:
```
import sys
readline = sys.stdin.readline
MOD = 10**9+7
def compress(L):
L2 = list(set(L))
L2.sort()
C = {v : k for k, v in enumerate(L2)}
return L2, C
N = int(readline())
height = [0]
H = list(map(int, readline().split()))
height.extend(H)
orih, C = compress(height)
L = len(or... | output | 1 | 29,829 | 16 | 59,659 |
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