Submission #890804


Source Code Expand

#include <iostream>
using namespace std;

int main()
{
  int N;
  cin>>N;
  int a[N+1];
  for(int i=1; i<=N; i++) cin>>a[i];

  int answ = 0;

  for(int i=1; i<=N; i++)
   if(i == a[a[i]])
    answ++;

  cout<<answ/2;
  return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User Prec
Language C++14 (GCC 5.4.1)
Score 200
Code Size 251 Byte
Status AC
Exec Time 36 ms
Memory 768 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 200 / 200
Status
AC × 3
AC × 15
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 256 KB
0_01.txt AC 3 ms 256 KB
0_02.txt AC 3 ms 256 KB
1_00.txt AC 3 ms 256 KB
1_01.txt AC 35 ms 768 KB
1_02.txt AC 36 ms 640 KB
1_03.txt AC 35 ms 640 KB
1_04.txt AC 34 ms 640 KB
1_05.txt AC 35 ms 640 KB
1_06.txt AC 35 ms 640 KB
1_07.txt AC 35 ms 640 KB
1_08.txt AC 15 ms 384 KB
1_09.txt AC 29 ms 512 KB
1_10.txt AC 25 ms 512 KB
1_11.txt AC 8 ms 256 KB