message stringlengths 2 65.1k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 0 108k | cluster float64 14 14 | __index_level_0__ int64 0 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,390 | 14 | 134,780 |
Tags: math
Correct Solution:
```
for t in range(int(input())):
a,b=[int(x) for x in input().split()]
k=abs(a-b)
res=k//5
k%=5
res+={0:0,1:1,2:1,3:2,4:2}[k]
print(res)
``` | output | 1 | 67,390 | 14 | 134,781 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,391 | 14 | 134,782 |
Tags: math
Correct Solution:
```
def solve(a, b):
diff = abs(a - b)
count = 0
count += diff // 5
diff %= 5
count += diff // 2
diff %= 2
count += diff
return count
T = int(input())
for i in range(T):
a, b = map(int, input().split())
print(solve(a, b))
``` | output | 1 | 67,391 | 14 | 134,783 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,392 | 14 | 134,784 |
Tags: math
Correct Solution:
```
for _ in range(int(input())):
a,b=[*map(int,input().split())]
if a>b:
ans=a-b
else:
ans=b-a
count=ans//5
s1=(ans-(5*count))//2
s=ans-(5*count)-(2*s1)
print(count+s1+s)
``` | output | 1 | 67,392 | 14 | 134,785 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,393 | 14 | 134,786 |
Tags: math
Correct Solution:
```
for _ in range(int(input())):
a, b = list(map(int, input().split()))
res, c = divmod(abs(a-b), 5)
t, d = divmod(c, 2)
res += t + d
print(res)
``` | output | 1 | 67,393 | 14 | 134,787 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,394 | 14 | 134,788 |
Tags: math
Correct Solution:
```
t=int(input())
while t:
cou=0
a,b=map(int,input().split())
if(a<b):
a,b=b,a
a=a-b
cou+=a//5
a=a-(a//5)*5
cou+=a//2
a=a-(a//2)*2
cou+=a
print(cou)
t-=1
``` | output | 1 | 67,394 | 14 | 134,789 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,395 | 14 | 134,790 |
Tags: math
Correct Solution:
```
def change(a,b):
dic={0:0,1:1,-1:1,2:1,-2:1,3:2,-3:2,4:2,-4:2}
if a<b:
c=b-a
k=c//5
k+=dic[c%5]
else:
c=a-b
k=c//5
k+=dic[c%5]
return k
t=int(input())
for _ in range(t):
a,b=map(int,input().split())
print(change(a,b... | output | 1 | 67,395 | 14 | 134,791 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Bob watches TV every day. He always sets the volume of his TV to b. However, today he is angry to find out someone has changed the volume to a. Of course, Bob has a remote control that can change the volume.
There are six buttons (-5, -2, -... | instruction | 0 | 67,396 | 14 | 134,792 |
Tags: math
Correct Solution:
```
q = int(input())
for i in range(q):
a , b = map(int,input().split(' '))
if a == b:
print(0)
elif a != b:
diff = abs(a-b)
n = 0
if diff >=5:
x = diff//5
n+=x
diff = diff%5
# print(x,diff,n)
... | output | 1 | 67,396 | 14 | 134,793 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,513 | 14 | 135,026 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
import math
import os
from io import BytesIO, IOBase
import sys
# region fastio
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()... | output | 1 | 67,513 | 14 | 135,027 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,514 | 14 | 135,028 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
a = [[0, 0, 0] for _ in range(n)]
for i, x in enumerate(a):
x[0], x[1] = map(int, input().split())
if x[0] > x[1]:
x[0], x[1] = x[1], x[0]
... | output | 1 | 67,514 | 14 | 135,029 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,515 | 14 | 135,030 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
test = int(input())
for faoseufn in range(test):
n = int(input())
l = []
for i in range(n):
a,b = list(map(int,input().split()))
if a < b:
a,b = b,a
l.append((a,b,i+1))
l.sort()
... | output | 1 | 67,515 | 14 | 135,031 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,516 | 14 | 135,032 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
from collections import defaultdict
if __name__ == '__main__':
t = int(input())
for _ in range(t):
n = int(input())
ans = [-1]*n
idx = defaultdict(list)
people = list()
for i in range(n):
x, y = map(int, input().spli... | output | 1 | 67,516 | 14 | 135,033 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,517 | 14 | 135,034 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
import sys
import math
from collections import defaultdict,Counter
# input=sys.stdin.readline
# def print(x):
# sys.stdout.write(str(x)+"\n")
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IO... | output | 1 | 67,517 | 14 | 135,035 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,518 | 14 | 135,036 |
Tags: binary search, data structures, dp, sortings, two pointers
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)
retu... | output | 1 | 67,518 | 14 | 135,037 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,519 | 14 | 135,038 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
from sys import stdin,stdout
from math import gcd,sqrt,factorial,pi,inf
from collections import deque,defaultdict
from bisect import bisect,bisect_left
from time import time
from itertools import permutations as per
input=stdin.readl... | output | 1 | 67,519 | 14 | 135,039 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is characterized by two values h_i (their height) a... | instruction | 0 | 67,520 | 14 | 135,040 |
Tags: binary search, data structures, dp, sortings, two pointers
Correct Solution:
```
cases = int(input())
for _ in range(cases):
n = int(input())
arr = []
oarr = []
seen = {}
for i in range(n):
a, b = [int(i) for i in input().strip().split()]
oarr.append((a, b))
if (a, b) n... | output | 1 | 67,520 | 14 | 135,041 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,521 | 14 | 135,042 |
Yes | output | 1 | 67,521 | 14 | 135,043 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,522 | 14 | 135,044 |
Yes | output | 1 | 67,522 | 14 | 135,045 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,523 | 14 | 135,046 |
Yes | output | 1 | 67,523 | 14 | 135,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,524 | 14 | 135,048 |
Yes | output | 1 | 67,524 | 14 | 135,049 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,525 | 14 | 135,050 |
No | output | 1 | 67,525 | 14 | 135,051 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,526 | 14 | 135,052 |
No | output | 1 | 67,526 | 14 | 135,053 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,527 | 14 | 135,054 |
No | output | 1 | 67,527 | 14 | 135,055 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Polycarp has invited n friends to celebrate the New Year. During the celebration, he decided to take a group photo of all his friends. Each friend can stand or lie on the side.
Each friend is c... | instruction | 0 | 67,528 | 14 | 135,056 |
No | output | 1 | 67,528 | 14 | 135,057 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have been offered a job in a company developing a large social network. Your first task is connected with searching profiles that most probably belong to the same user.
The social network c... | instruction | 0 | 67,547 | 14 | 135,094 |
No | output | 1 | 67,547 | 14 | 135,095 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have been offered a job in a company developing a large social network. Your first task is connected with searching profiles that most probably belong to the same user.
The social network c... | instruction | 0 | 67,548 | 14 | 135,096 |
No | output | 1 | 67,548 | 14 | 135,097 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have been offered a job in a company developing a large social network. Your first task is connected with searching profiles that most probably belong to the same user.
The social network c... | instruction | 0 | 67,549 | 14 | 135,098 |
No | output | 1 | 67,549 | 14 | 135,099 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have been offered a job in a company developing a large social network. Your first task is connected with searching profiles that most probably belong to the same user.
The social network c... | instruction | 0 | 67,550 | 14 | 135,100 |
No | output | 1 | 67,550 | 14 | 135,101 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,722 | 14 | 135,444 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
#!/usr/bin/python3
# def gen(n, b):
# import random
# yield '{} {}'.format(n, b)
# t = 0
# for i in range(n):
# t += random.randrange(1, 1e7)
# d = random.randrange(1, 1e7)
# yield '{} {}\n'.format(t, d)
# def input... | output | 1 | 67,722 | 14 | 135,445 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,723 | 14 | 135,446 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
import queue
class query:
def __init__(self, id, t, d):
self.id = id
self.t = t
self.d = d
q = queue.Queue()
res = 0
n, mq = map(int, input().split())
x = []
for i in range(n):
t, d = map(int, input().split())... | output | 1 | 67,723 | 14 | 135,447 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,724 | 14 | 135,448 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
class Query:
def __init__(self, id, t_toi, t_tt):
self.id = id
self.t_toi = t_toi
self.t_tt = t_tt
import queue
n, b = map(int, input().split())
q = queue.Queue()
t_process = 0
ans = [0]*n
for i in range(n):
t_toi,... | output | 1 | 67,724 | 14 | 135,449 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,725 | 14 | 135,450 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
import queue
n, b = list(map(int, input().split()))
class Task:
def __init__(self, time: int, duration: int, index: int) -> None:
super().__init__()
self.time = time
self.duration = duration
... | output | 1 | 67,725 | 14 | 135,451 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,726 | 14 | 135,452 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
import queue
class Query:
def __init__(self, t, d, id):
self.t = t
self.d = d
self.id = id
n, b = map(int, input().split())
a = []
for i in range(n):
x, y = map(int, input().split())
a.appe... | output | 1 | 67,726 | 14 | 135,453 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,727 | 14 | 135,454 |
Tags: *special, constructive algorithms, data structures, two pointers
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 ... | output | 1 | 67,727 | 14 | 135,455 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,728 | 14 | 135,456 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
import queue
def processing_queries(n,b,q):
result=[]
finished=q[0][0]+q[0][1]
result.append(finished)
queries=queue.Queue()
queries.put(finished)
for i in range(1,len(q)):
while queries.qsize() > 0 and q[i][0] ... | output | 1 | 67,728 | 14 | 135,457 |
Provide tags and a correct Python 3 solution for this coding contest problem.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All ti are guaranteed to be distinct.
When a quer... | instruction | 0 | 67,729 | 14 | 135,458 |
Tags: *special, constructive algorithms, data structures, two pointers
Correct Solution:
```
from collections import deque
qEnd = deque()
currQ = 0
n, b = map(int, input().split())
for i in range(n):
t, d = map(int, input().split())
while qEnd and qEnd[0] <= t:
qEnd.popleft()
currQ -= 1
... | output | 1 | 67,729 | 14 | 135,459 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,730 | 14 | 135,460 |
Yes | output | 1 | 67,730 | 14 | 135,461 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,731 | 14 | 135,462 |
Yes | output | 1 | 67,731 | 14 | 135,463 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,732 | 14 | 135,464 |
Yes | output | 1 | 67,732 | 14 | 135,465 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,733 | 14 | 135,466 |
Yes | output | 1 | 67,733 | 14 | 135,467 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,734 | 14 | 135,468 |
No | output | 1 | 67,734 | 14 | 135,469 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,735 | 14 | 135,470 |
No | output | 1 | 67,735 | 14 | 135,471 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,736 | 14 | 135,472 |
No | output | 1 | 67,736 | 14 | 135,473 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In this problem you have to simulate the workflow of one-thread server. There are n queries to process, the i-th will be received at moment ti and needs to be processed for di units of time. All... | instruction | 0 | 67,737 | 14 | 135,474 |
No | output | 1 | 67,737 | 14 | 135,475 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,021 | 14 | 136,042 |
"Correct Solution:
```
n = int(input())
a = tuple(map(lambda a:int(a)-1,input().split()))
ans = 0
for i in range(n):
if a[a[i]]==i:
ans+=1
print(ans//2)
``` | output | 1 | 68,021 | 14 | 136,043 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,022 | 14 | 136,044 |
"Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
c=0
for i in range(n):
if a[a[i]-1]==i+1:c+=1
print(int(c/2))
``` | output | 1 | 68,022 | 14 | 136,045 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,023 | 14 | 136,046 |
"Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
cnt=0
for i in range(n):
if i+1 == a[a[i]-1]:
cnt+=1
print(cnt//2)
``` | output | 1 | 68,023 | 14 | 136,047 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,024 | 14 | 136,048 |
"Correct Solution:
```
n=int(input())
l=list(map(int,input().split()))
c=n
for i in range(n):
if i+1!=l[l[i]-1]:
c-=1
print(c//2)
``` | output | 1 | 68,024 | 14 | 136,049 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,025 | 14 | 136,050 |
"Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
c=0
for i in range(n):
if a[a[i]-1]-1==i:
c+=1
print(c//2)
``` | output | 1 | 68,025 | 14 | 136,051 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,026 | 14 | 136,052 |
"Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
c = 0
for i in range(n):
if a[a[i]-1] == i+1:
c += 1
print(c//2)
``` | output | 1 | 68,026 | 14 | 136,053 |
Provide a correct Python 3 solution for this coding contest problem.
There are N rabbits, numbered 1 through N.
The i-th (1≤i≤N) rabbit likes rabbit a_i. Note that no rabbit can like itself, that is, a_i≠i.
For a pair of rabbits i and j (i＜j), we call the pair (i，j) a friendly pair if the following condition is met.... | instruction | 0 | 68,027 | 14 | 136,054 |
"Correct Solution:
```
N=int(input())
a=[0]+list(map(int,input().split()))
cnt=0
for i in range(1,N+1):
if i== a[a[i]]:
cnt +=1
print(cnt//2)
``` | output | 1 | 68,027 | 14 | 136,055 |
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