message stringlengths 2 67k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 463 109k | cluster float64 19 19 | __index_level_0__ int64 926 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The player wins the game after beating the n-th stag... | instruction | 0 | 7,772 | 19 | 15,544 |
Tags: brute force, constructive algorithms, greedy, math, probabilities
Correct Solution:
```
t = int(input())
chisls = [2 ** (i + 1) - 2 for i in range(1, 72)]
# print(chisls)
for i in range(t):
n = int(input())
if n % 2 == 1:
print(-1)
else:
# print(1, end=' ')
data = [1]
... | output | 1 | 7,772 | 19 | 15,545 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The player wins the game after beating the n-th stag... | instruction | 0 | 7,773 | 19 | 15,546 |
Tags: brute force, constructive algorithms, greedy, math, probabilities
Correct Solution:
```
import sys
from math import gcd,sqrt,ceil,log2
from collections import defaultdict,Counter,deque
from bisect import bisect_left,bisect_right
import math
sys.setrecursionlimit(2*10**5+10)
import heapq
from itertools import perm... | output | 1 | 7,773 | 19 | 15,547 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The player wins the game after beating the n-th stag... | instruction | 0 | 7,774 | 19 | 15,548 |
Tags: brute force, constructive algorithms, greedy, math, probabilities
Correct Solution:
```
two = []
cur = 1
for i in range(100):
two.append(cur)
cur *= 2
t = int(input())
for _ in range(t):
k = int(input())
if k % 2:
print(-1)
continue
res = []
def get(x):
a = 0
... | output | 1 | 7,774 | 19 | 15,549 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,775 | 19 | 15,550 |
Yes | output | 1 | 7,775 | 19 | 15,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,776 | 19 | 15,552 |
Yes | output | 1 | 7,776 | 19 | 15,553 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,777 | 19 | 15,554 |
Yes | output | 1 | 7,777 | 19 | 15,555 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,778 | 19 | 15,556 |
Yes | output | 1 | 7,778 | 19 | 15,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,779 | 19 | 15,558 |
No | output | 1 | 7,779 | 19 | 15,559 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,780 | 19 | 15,560 |
No | output | 1 | 7,780 | 19 | 15,561 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,781 | 19 | 15,562 |
No | output | 1 | 7,781 | 19 | 15,563 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Gildong is developing a game consisting of n stages numbered from 1 to n. The player starts the game from the 1-st stage and should beat the stages in increasing order of the stage number. The p... | instruction | 0 | 7,782 | 19 | 15,564 |
No | output | 1 | 7,782 | 19 | 15,565 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,919 | 19 | 15,838 |
Tags: greedy
Correct Solution:
```
from collections import defaultdict, deque
from heapq import heappush, heappop
from math import inf
ri = lambda : map(int, input().split())
def sm(x):
ans = 0
while x:
ans += (x % 10)
x //= 10
return ans
def solve():
n = int(input())
A = list(ri(... | output | 1 | 7,919 | 19 | 15,839 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,920 | 19 | 15,840 |
Tags: greedy
Correct Solution:
```
d=[0,0,0];input()
for i in map(int,input().split()):d[i%3]+=1
print(d[0]//2+min(d[1],d[2]))
``` | output | 1 | 7,920 | 19 | 15,841 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,921 | 19 | 15,842 |
Tags: greedy
Correct Solution:
```
a=input()
b=map(int,input().split())
c=0
d=0
e=0
for i in b:
if i%3==0:
c+=1
elif i%3==1:
d+=1
else:
e+=1
print(min(d,e)+c//2)
``` | output | 1 | 7,921 | 19 | 15,843 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,923 | 19 | 15,846 |
Tags: greedy
Correct Solution:
```
n=int(input())
ar=list(map(lambda x:int(x)%3,input().split(' ')))
print((ar.count(0)//2)+(min(ar.count(1),ar.count(2))))
``` | output | 1 | 7,923 | 19 | 15,847 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,924 | 19 | 15,848 |
Tags: greedy
Correct Solution:
```
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.wr... | output | 1 | 7,924 | 19 | 15,849 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,925 | 19 | 15,850 |
Tags: greedy
Correct Solution:
```
import sys
from array import array # noqa: F401
from collections import Counter
def input():
return sys.stdin.buffer.readline().decode('utf-8')
n = int(input())
cnt = Counter(x % 3 for x in map(int, input().split()))
print(cnt[0] // 2 + min(cnt[1], cnt[2]))
``` | output | 1 | 7,925 | 19 | 15,851 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk and decided to destroy the collection. First he t... | instruction | 0 | 7,926 | 19 | 15,852 |
Tags: greedy
Correct Solution:
```
s=int(input())
ar=[sum([int(x) for x in e])%3 for e in input().split()]
x,y,z=ar.count(0),ar.count(1),ar.count(2)
print(x//2+min(y,z))
``` | output | 1 | 7,926 | 19 | 15,853 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,927 | 19 | 15,854 |
Yes | output | 1 | 7,927 | 19 | 15,855 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,928 | 19 | 15,856 |
Yes | output | 1 | 7,928 | 19 | 15,857 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,929 | 19 | 15,858 |
Yes | output | 1 | 7,929 | 19 | 15,859 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,930 | 19 | 15,860 |
Yes | output | 1 | 7,930 | 19 | 15,861 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,931 | 19 | 15,862 |
No | output | 1 | 7,931 | 19 | 15,863 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,932 | 19 | 15,864 |
No | output | 1 | 7,932 | 19 | 15,865 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya thinks that lucky tickets are the tickets whose numbers are divisible by 3. He gathered quite a large collection of such tickets but one day his younger brother Leonid was having a sulk an... | instruction | 0 | 7,933 | 19 | 15,866 |
No | output | 1 | 7,933 | 19 | 15,867 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,200 | 19 | 16,400 |
"Correct Solution:
```
N,K = map(int,input().split())
R,S,P = map(int,input().split())
T = list(input())
d = {'r':P,'s':R,'p':S}
ans = 0
for i,c in enumerate(T):
if i < K or c != T[i-K]:
ans += d[c]
continue
else:
T[i] = '_'
print(ans)
``` | output | 1 | 8,200 | 19 | 16,401 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,201 | 19 | 16,402 |
"Correct Solution:
```
from itertools import groupby
N, K = map(int, input().split())
R, S, P = map(int, input().split())
T = input()
d = {"r": P, "s": R, "p": S}
print(sum(sum(map(lambda p: d[p[0]]*((len(list(p[1]))+1)//2), groupby(T[k::K]))) for k in range(K)))
``` | output | 1 | 8,201 | 19 | 16,403 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,202 | 19 | 16,404 |
"Correct Solution:
```
n, k = map(int, input().split())
r, s, p = map(int, input().split())
t = list(input())
dict = {"r":p, "s":r, "p":s}
val = 0
for i in range(n):
if i < k:
val += dict[t[i]]
elif t[i-k] != t[i]:
val += dict[t[i]]
else:
t[i] = " "
print(val)
``` | output | 1 | 8,202 | 19 | 16,405 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,203 | 19 | 16,406 |
"Correct Solution:
```
n,k = map(int,input().split())
r,s,p = map(int,input().split())
t = list(input())
for i in range(k,n):
if t[i]==t[i-k]:
t[i]=''
ans = t.count('r')*p+t.count('s')*r+t.count('p')*s
print(ans)
``` | output | 1 | 8,203 | 19 | 16,407 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,204 | 19 | 16,408 |
"Correct Solution:
```
n, k = map(int, input().split())
r, s, p = map(int, input().split())
t = list(input())
d = {'r': p, 's': r, 'p': s}
point = 0
for i in range(k):
point += d[t[i]]
for i in range(k, n):
if t[i] == t[i - k]:
t[i] = 'x'
continue
point += d[t[i]]
print(point)
``` | output | 1 | 8,204 | 19 | 16,409 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,205 | 19 | 16,410 |
"Correct Solution:
```
n, k = map(int, input().split())
r, s, p = map(int, input().split())
d = {"r":p, "s":r, "p":s}
t = list(input())
dp = [0]*n
for i in range(n):
if i>=k and t[i]==t[i-k]:
dp[i] = 0
t[i] = "x"
else:
dp[i] = d[t[i]]
print(sum(dp))
``` | output | 1 | 8,205 | 19 | 16,411 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,206 | 19 | 16,412 |
"Correct Solution:
```
N, K = map(int, input().split())
points = list(map(int, input().split()))
hand = {'r': 0, 's': 1, 'p': 2}
T = [hand[t] for t in input()]
win = [False] * N
ans = 0
for i in range(N):
if i < K or T[i] != T[i-K] or not win[i-K]:
win[i] = True
ans += points[(T[i]+2) % 3]
print(ans... | output | 1 | 8,206 | 19 | 16,413 |
Provide a correct Python 3 solution for this coding contest problem.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description of Rock Paper Scissors. A draw also counts as a round.)
*... | instruction | 0 | 8,207 | 19 | 16,414 |
"Correct Solution:
```
N,K=map(int,input().split())
R,S,P=map(int,input().split())
T=list(input())
for i in range(N-K):
if T[K+i]==T[i]:
T[K+i]=""
ans=T.count("r")*P+T.count("s")*R+T.count("p")*S
print(ans)
``` | output | 1 | 8,207 | 19 | 16,415 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,208 | 19 | 16,416 |
Yes | output | 1 | 8,208 | 19 | 16,417 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,209 | 19 | 16,418 |
Yes | output | 1 | 8,209 | 19 | 16,419 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,210 | 19 | 16,420 |
Yes | output | 1 | 8,210 | 19 | 16,421 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,211 | 19 | 16,422 |
Yes | output | 1 | 8,211 | 19 | 16,423 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,212 | 19 | 16,424 |
No | output | 1 | 8,212 | 19 | 16,425 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,213 | 19 | 16,426 |
No | output | 1 | 8,213 | 19 | 16,427 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,214 | 19 | 16,428 |
No | output | 1 | 8,214 | 19 | 16,429 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
At an arcade, Takahashi is playing a game called RPS Battle, which is played as follows:
* The player plays N rounds of Rock Paper Scissors against the machine. (See Notes for the description o... | instruction | 0 | 8,215 | 19 | 16,430 |
No | output | 1 | 8,215 | 19 | 16,431 |
Provide a correct Python 3 solution for this coding contest problem.
Consider the following game. There are k pairs of n cards with numbers from 1 to n written one by one. Shuffle these kn cards well to make piles of k cards and arrange them in a horizontal row. The i-th (k-card) pile from the left of the n piles crea... | instruction | 0 | 8,342 | 19 | 16,684 |
"Correct Solution:
```
# AOJ 0504: Card Game II
# Python3 2018.7.1 bal4u
from decimal import *
while True:
n, k, m, r = map(int, input().split())
if n == 0: break
setcontext(Context(prec=r, rounding=ROUND_HALF_UP))
one = Decimal(1)
ans = one/Decimal(n)
if m == 1:
s = 0
for i in range(1, n): s += one/Dec... | output | 1 | 8,342 | 19 | 16,685 |
Provide a correct Python 3 solution for this coding contest problem.
Consider the following game. There are k pairs of n cards with numbers from 1 to n written one by one. Shuffle these kn cards well to make piles of k cards and arrange them in a horizontal row. The i-th (k-card) pile from the left of the n piles crea... | instruction | 0 | 8,343 | 19 | 16,686 |
"Correct Solution:
```
from decimal import Decimal, getcontext
d1 = Decimal(1)
while True:
n, k, m, r = map(int, input().split())
if not n:
break
getcontext().prec = r + 1
ans = d1 / Decimal(n)
if m:
ans *= 1 + sum(d1 / Decimal(i) for i in range(1, n))
print('{{:.{}f}}'.format(r... | output | 1 | 8,343 | 19 | 16,687 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Consider the following game. There are k pairs of n cards with numbers from 1 to n written one by one. Shuffle these kn cards well to make piles of k cards and arrange them in a horizontal row. ... | instruction | 0 | 8,344 | 19 | 16,688 |
No | output | 1 | 8,344 | 19 | 16,689 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Consider the following game. There are k pairs of n cards with numbers from 1 to n written one by one. Shuffle these kn cards well to make piles of k cards and arrange them in a horizontal row. ... | instruction | 0 | 8,345 | 19 | 16,690 |
No | output | 1 | 8,345 | 19 | 16,691 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Jeff has become friends with Furik. Now these two are going to play one quite amusing game.
At the beginning of the game Jeff takes a piece of paper and writes down a permutation consisting of n numbers: p1, p2, ..., pn. Then the guys take ... | instruction | 0 | 8,629 | 19 | 17,258 |
Tags: combinatorics, dp, probabilities
Correct Solution:
```
from sys import *
n=int(stdin.readline().strip())
s1=stdin.readline().strip()
a=list(map(int,s1.split()))
if n==1:
print('0')
else:
x=0
n0=1
while n0<n:
n0=n0*2
b=[0]*(2*n0+10)
'''for i in range (n-1):
for j in range ... | output | 1 | 8,629 | 19 | 17,259 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Jeff has become friends with Furik. Now these two are going to play one quite amusing game.
At the beginning of the game Jeff takes a piece of paper and writes down a permutation consisting of n numbers: p1, p2, ..., pn. Then the guys take ... | instruction | 0 | 8,630 | 19 | 17,260 |
Tags: combinatorics, dp, probabilities
Correct Solution:
```
n=int(input().strip())
p=[0]+list(map(int,input().split()))
c=[0]*(n+1)
def lowbit(x):
return x&(-x)
def add(x,v):
while x<=n:
c[x]+=v
x+=lowbit(x)
def get(x):
ans=0
while x:
ans+=c[x]
x-=lowbit(x)
return a... | output | 1 | 8,630 | 19 | 17,261 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Jeff has become friends with Furik. Now these two are going to play one quite amusing game.
At the beginning of the game Jeff takes a piece of paper and writes down a permutation consisting of n numbers: p1, p2, ..., pn. Then the guys take ... | instruction | 0 | 8,631 | 19 | 17,262 |
Tags: combinatorics, dp, probabilities
Correct Solution:
```
n=int(input())
b=list(map(int,input().split()))
cnt=0
for i in range(n):
j=i-1
while(j>=0):
if b[j]>b[i]:
cnt+=1
j+=-1
i+=-1
print(2*cnt-cnt%2)
``` | output | 1 | 8,631 | 19 | 17,263 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Jeff has become friends with Furik. Now these two are going to play one quite amusing game.
At the beginning of the game Jeff takes a piece of paper and writes down a permutation consisting of n numbers: p1, p2, ..., pn. Then the guys take ... | instruction | 0 | 8,632 | 19 | 17,264 |
Tags: combinatorics, dp, probabilities
Correct Solution:
```
#!/usr/bin/python3
import sys
class CumTree:
def __init__(self, a, b):
self.a = a
self.b = b
self.count = 0
if a == b:
return
mid = (a + b) // 2
self.levo = CumTree(a, mid)
self.de... | output | 1 | 8,632 | 19 | 17,265 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Jeff has become friends with Furik. Now these two are going to play one quite amusing game.
At the beginning of the game Jeff takes a piece of paper and writes down a permutation consisting of n numbers: p1, p2, ..., pn. Then the guys take ... | instruction | 0 | 8,633 | 19 | 17,266 |
Tags: combinatorics, dp, probabilities
Correct Solution:
```
def count(a):
n = len(a)
cnt = 0
for i in range(n):
for j in range(i+1, n):
if a[i] > a[j]:
cnt+=1
return cnt
n = int(input())
p = list(map(int, input().split()))
num = count(p)
print(num*2 - n... | output | 1 | 8,633 | 19 | 17,267 |
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