message stringlengths 2 22.8k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 16 109k | cluster float64 1 1 | __index_level_0__ int64 32 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the olympiad.
Vladik knows n ... | instruction | 0 | 94,031 | 1 | 188,062 |
Tags: constructive algorithms, greedy, implementation
Correct Solution:
```
n, a, b = list(map(int, input().rstrip().split()))
s = input()
if s[a - 1] == s[b - 1]:
print(0)
else:
print(1)
``` | output | 1 | 94,031 | 1 | 188,063 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the olympiad.
Vladik knows n ... | instruction | 0 | 94,032 | 1 | 188,064 |
Tags: constructive algorithms, greedy, implementation
Correct Solution:
```
# -*- coding: utf-8 -*-
tmp = input().split(' ')
n = int(tmp[0])
a = int(tmp[1])
b = int(tmp[2])
str = input()
if str[a-1] == str[b-1]:
print('0')
else:
print('1')
``` | output | 1 | 94,032 | 1 | 188,065 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheapest way to get to the olympiad.
Vladik knows n ... | instruction | 0 | 94,033 | 1 | 188,066 |
Tags: constructive algorithms, greedy, implementation
Correct Solution:
```
n, a, b = map(int, input().split())
s = input()
a -= 1
b -= 1
if a>b:
s = s[::-1]
a = n-a-1
b = n-b-1
if s[a] == s[b]:
print("0")
else:
count = 0
for i in range(b, a-1, -1):
if s[i]!=s[a]:
count += 1
... | output | 1 | 94,033 | 1 | 188,067 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,034 | 1 | 188,068 |
Yes | output | 1 | 94,034 | 1 | 188,069 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,035 | 1 | 188,070 |
Yes | output | 1 | 94,035 | 1 | 188,071 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,036 | 1 | 188,072 |
Yes | output | 1 | 94,036 | 1 | 188,073 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,037 | 1 | 188,074 |
Yes | output | 1 | 94,037 | 1 | 188,075 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,038 | 1 | 188,076 |
No | output | 1 | 94,038 | 1 | 188,077 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,039 | 1 | 188,078 |
No | output | 1 | 94,039 | 1 | 188,079 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,040 | 1 | 188,080 |
No | output | 1 | 94,040 | 1 | 188,081 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the question Vladik face now is to find the cheape... | instruction | 0 | 94,041 | 1 | 188,082 |
No | output | 1 | 94,041 | 1 | 188,083 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,275 | 1 | 188,550 |
"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 | 94,275 | 1 | 188,551 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,276 | 1 | 188,552 |
"Correct Solution:
```
# -*- coding: utf-8 -*-
class UnionFind(object):
'''Represents a data structure that tracks a set of elements partitioned
into a number of disjoint (non-overlapping) subsets.
Landau notation: O(α(n)), where α(n) is the inverse Ackermann function.
See:
https://www.youtube.... | output | 1 | 94,276 | 1 | 188,553 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,277 | 1 | 188,554 |
"Correct Solution:
```
# AtCoder Regular Contest 065
# D - 連結 / Connectivity
# https://atcoder.jp/contests/arc065/tasks/arc065_b
import sys
from collections import defaultdict
class UnionFind:
def __init__(self, n):
# self.parent = [i for i in range(n)]
self.parent = list(range(n))
def find(sel... | output | 1 | 94,277 | 1 | 188,555 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,278 | 1 | 188,556 |
"Correct Solution:
```
from collections import defaultdict
class UnionFind():
def __init__(self,n):
self.n=n
self.parents=[-1]*n
def find(self,x):
if self.parents[x] < 0:
return x
else:
self.parents[x]=self.find(self.parents[x])
return self.par... | output | 1 | 94,278 | 1 | 188,557 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,279 | 1 | 188,558 |
"Correct Solution:
```
#!/usr/bin/env python3
def main():
n, k, l = map(int, input().split())
pq = get_edges(k)
rs = get_edges(l)
road_groups = get_group(n, pq)
rail_groups = get_group(n, rs)
count = {}
for i in range(n):
gp = (find(i, road_groups), find(i, rail_groups))
if ... | output | 1 | 94,279 | 1 | 188,559 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,280 | 1 | 188,560 |
"Correct Solution:
```
# AtCoder Regular Contest 065
# D - 連結 / Connectivity
# https://atcoder.jp/contests/arc065/tasks/arc065_b
import sys
from collections import defaultdict
class UnionFind:
def __init__(self, n):
self.parent = [i for i in range(n)]
def find(self, x):
if self.parent[x] == x:
... | output | 1 | 94,280 | 1 | 188,561 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,281 | 1 | 188,562 |
"Correct Solution:
```
def f(m, r):
connmap = [[] for _ in range(m + 1)]
for _ in range(r):
a, b = map(int, input().split())
connmap[a].append(b)
connmap[b].append(a)
group = [0] * (m + 1)
num = 0
for i in range(1, m + 1):
if group[i] > 0:
continue
... | output | 1 | 94,281 | 1 | 188,563 |
Provide a correct Python 3 solution for this coding contest problem.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally connects the r_i-th and s_i-th cities. No two roads con... | instruction | 0 | 94,282 | 1 | 188,564 |
"Correct Solution:
```
# AtCoder Regular Contest 065
# D - 連結 / Connectivity
# https://atcoder.jp/contests/arc065/tasks/arc065_b
import sys
from collections import defaultdict
class UnionFind:
def __init__(self, n):
self.parent = [i for i in range(n)]
def find(self, x):
if self.parent[x] == x:
... | output | 1 | 94,282 | 1 | 188,565 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,283 | 1 | 188,566 |
Yes | output | 1 | 94,283 | 1 | 188,567 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,284 | 1 | 188,568 |
Yes | output | 1 | 94,284 | 1 | 188,569 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,285 | 1 | 188,570 |
Yes | output | 1 | 94,285 | 1 | 188,571 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,286 | 1 | 188,572 |
Yes | output | 1 | 94,286 | 1 | 188,573 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,287 | 1 | 188,574 |
No | output | 1 | 94,287 | 1 | 188,575 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,288 | 1 | 188,576 |
No | output | 1 | 94,288 | 1 | 188,577 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,289 | 1 | 188,578 |
No | output | 1 | 94,289 | 1 | 188,579 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are N cities. There are also K roads and L railways, extending between the cities. The i-th road bidirectionally connects the p_i-th and q_i-th cities, and the i-th railway bidirectionally... | instruction | 0 | 94,290 | 1 | 188,580 |
No | output | 1 | 94,290 | 1 | 188,581 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,336 | 1 | 188,672 |
"Correct Solution:
```
N, M = map(int, input().split())
L = [[] for i in range(N)]
ans = []
for i in range(M) :
info, num = map(int, input().split())
if info == 1 :
x = 0
for j in range(1, N) :
if len(L[j]) < len(L[x]) :
x = j
L[x].append(num)
else :
... | output | 1 | 94,336 | 1 | 188,673 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,337 | 1 | 188,674 |
"Correct Solution:
```
import heapq
from collections import deque
from enum import Enum
import sys
import math
from _heapq import heappush, heappop
import copy
BIG_NUM = 2000000000
MOD = 1000000007
EPS = 0.000000001
num_lane,num_info = map(int,input().split())
Q = []
for _ in range(num_lane):
Q.append(deque())
... | output | 1 | 94,337 | 1 | 188,675 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,338 | 1 | 188,676 |
"Correct Solution:
```
N,M = [int(i) for i in input().split()]
table = [[] for i in range(N)]
for l in range(M):
command,num = [int(i) for i in input().split()]
if command == 0:
print(table[num-1].pop(0))
else:
minSize = 10000
minId = -1
for i in range(N):
if l... | output | 1 | 94,338 | 1 | 188,677 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,339 | 1 | 188,678 |
"Correct Solution:
```
n,m = (int(x) for x in input().split())
rane = [[] for i in range(n)]
def getRane():
index = 0
min = 9999
for i in range(0,n):
if min > len(rane[i]):
min = len(rane[i])
if min == 0:
return i
index = i
return index
for ... | output | 1 | 94,339 | 1 | 188,679 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,340 | 1 | 188,680 |
"Correct Solution:
```
from collections import deque
N,M = [int(x) for x in input().split(" ")]
qs = []
for i in range(N):
qs.append(deque())
lens = [0]*N
for i in range(M):
info,num = [int(x) for x in input().split(" ")]
if info == 0:
print(qs[num-1].popleft())
lens[num-1] -= 1
elif inf... | output | 1 | 94,340 | 1 | 188,681 |
Provide a correct Python 3 solution for this coding contest problem.
Gas stations in the White Tiger service area have $ N $ lanes assigned numbers from $ 1 $ to $ N $. The first car in each lane can refuel.
Cars entering the gas station will choose the lane with the fewest cars in line and line up at the end of the ... | instruction | 0 | 94,341 | 1 | 188,682 |
"Correct Solution:
```
from collections import deque
N, M = map(int, input().split())
lanes = [deque() for i in range(N + 1)]
for i in range(M):
info = list(map(int, input().split()))
if info[0] == 0:
print(lanes[info[1]].popleft())
else:
lane = -1
count = 10001
for j in r... | output | 1 | 94,341 | 1 | 188,683 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,521 | 1 | 189,042 |
Tags: dfs and similar, graphs
Correct Solution:
```
import sys
import math
n=int(input())
e=[[] for _ in range(n)]
for _ in range(n):
x,y=map(int,input().split())
e[x-1].append(y-1)
e[y-1].append(x-1)
d=[len(x) for x in e]
q=[i for i in range(n) if d[i]==1]
c=[0]*n
for u in q:
c[u]=n
for v in e[u]... | output | 1 | 94,521 | 1 | 189,043 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,522 | 1 | 189,044 |
Tags: dfs and similar, graphs
Correct Solution:
```
from collections import *
read_line = lambda: [int(i) for i in input().split(' ')]
n = read_line()[0]
g, deg = [[] for i in range(n)], [0] * n
for i in range(n):
a, b = [v - 1 for v in read_line()]
g[a].append(b)
g[b].append(a)
deg[a] += 1
deg[b]... | output | 1 | 94,522 | 1 | 189,045 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,523 | 1 | 189,046 |
Tags: dfs and similar, graphs
Correct Solution:
```
n = int(input())
t, p = [0] * (n + 1), [[] for i in range(n + 1)]
for i in range(n):
a, b = map(int, input().split())
p[a].append(b)
p[b].append(a)
q, x, y = [1], 0, 0
while not x:
i = q.pop()
for j in p[i]:
if t[i] == j: continue
i... | output | 1 | 94,523 | 1 | 189,047 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,524 | 1 | 189,048 |
Tags: dfs and similar, graphs
Correct Solution:
```
from collections import deque
def findCycle(grafo):
n = len(grafo)
degree = dict()
for i in range(n):
degree[i] = len(grafo[i])
visited = [False for i in range(n)]
q = deque()
while True:
for i in range(len(degree)):
... | output | 1 | 94,524 | 1 | 189,049 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,525 | 1 | 189,050 |
Tags: dfs and similar, graphs
Correct Solution:
```
#!/usr/bin/pypy3
from sys import stdin,stderr
from collections import defaultdict
def readInts(): return map(int,stdin.readline().strip().split())
def print_err(*args,**kwargs): print(*args,file=stderr,**kwargs)
def find_cycle(n,g):
parents = [ None for _ in ra... | output | 1 | 94,525 | 1 | 189,051 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,526 | 1 | 189,052 |
Tags: dfs and similar, graphs
Correct Solution:
```
#!/usr/bin/pypy3
from sys import stdin,stderr
from collections import defaultdict
def readInts(): return map(int,stdin.readline().strip().split())
def print_err(*args,**kwargs): print(*args,file=stderr,**kwargs)
def find_cycle(g):
path = [None,1]
path_set =... | output | 1 | 94,526 | 1 | 189,053 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,527 | 1 | 189,054 |
Tags: dfs and similar, graphs
Correct Solution:
```
from sys import setrecursionlimit
setrecursionlimit(30000)
def cycle(f):
v = f
cyc[v] = True
v = p[v]
while v != f:
cyc[v] = True
v = p[v]
def dfs(v, par):
global c, p, cycleroot
if c[v] == 2:
return
p[v] = par
... | output | 1 | 94,527 | 1 | 189,055 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. Besides, in the classic scheme one can get from ... | instruction | 0 | 94,528 | 1 | 189,056 |
Tags: dfs and similar, graphs
Correct Solution:
```
def dfs_non_recursive(graph, source):
path = []
stack = [source]
fathers = [x for x in range(len(graph))]
cycle = [0 for x in range(len(graph))]
while(len(stack) != 0):
v = stack.pop()
if v not in path:... | output | 1 | 94,528 | 1 | 189,057 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,529 | 1 | 189,058 |
Yes | output | 1 | 94,529 | 1 | 189,059 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,530 | 1 | 189,060 |
Yes | output | 1 | 94,530 | 1 | 189,061 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,531 | 1 | 189,062 |
Yes | output | 1 | 94,531 | 1 | 189,063 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,532 | 1 | 189,064 |
Yes | output | 1 | 94,532 | 1 | 189,065 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,533 | 1 | 189,066 |
No | output | 1 | 94,533 | 1 | 189,067 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,534 | 1 | 189,068 |
No | output | 1 | 94,534 | 1 | 189,069 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,535 | 1 | 189,070 |
No | output | 1 | 94,535 | 1 | 189,071 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which connects exactly two stations and does not pass through any others. B... | instruction | 0 | 94,536 | 1 | 189,072 |
No | output | 1 | 94,536 | 1 | 189,073 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The main road in Bytecity is a straight line from south to north. Conveniently, there are coordinates measured in meters from the southernmost building in north direction.
At some points on the road there are n friends, and i-th of them is ... | instruction | 0 | 94,914 | 1 | 189,828 |
Tags: binary search
Correct Solution:
```
N = int( input() )
X = list( map( int, input().split() ) )
V = list( map( int, input().split() ) )
def calc( p ): # everyone is gathered to point p
return max( abs( X[ i ] - p ) / V[ i ] for i in range( N ) )
lb, ub = 1.0, 1e9
while ub - lb > 5e-7:
mid = ( lb + ub ) / 2
... | output | 1 | 94,914 | 1 | 189,829 |
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