Submission #890754


Source Code Expand

#include<bits/stdc++.h>

using namespace std;

typedef pair< int, int > Pi;

int main()
{
  int N;
  cin >> N;

  map< Pi, int > mp;

  for(int i = 0; i < N; i++) {
    int A;
    cin >> A;
    --A;
    mp[minmax(i, A)]++;
  }
  int ret = 0;
  for(auto k : mp) {
    if(k.second == 2) ++ret;
  }
  cout << ret << endl;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User ei13333
Language C++14 (GCC 5.4.1)
Score 200
Code Size 346 Byte
Status AC
Exec Time 62 ms
Memory 6528 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 3 ms 256 KB
0_01.txt AC 2 ms 256 KB
0_02.txt AC 3 ms 256 KB
1_00.txt AC 2 ms 256 KB
1_01.txt AC 62 ms 3328 KB
1_02.txt AC 60 ms 6528 KB
1_03.txt AC 59 ms 6144 KB
1_04.txt AC 60 ms 6400 KB
1_05.txt AC 61 ms 6528 KB
1_06.txt AC 61 ms 6528 KB
1_07.txt AC 61 ms 6528 KB
1_08.txt AC 23 ms 2560 KB
1_09.txt AC 50 ms 5376 KB
1_10.txt AC 42 ms 4608 KB
1_11.txt AC 11 ms 1280 KB