Submission #1217636


Source Code Expand

#include <iostream>
#include <string>
#include <vector>
 
using namespace std;
 
int main() {
    int N,count =0;
    cin >> N;
    vector<int> arr(N,0);
 
    for ( int i = 0; i < N; i++)
    {
        cin >> arr[i];
    }
 
    for (int j = 0; j < N; j++)
    {
        int num;
 
        num = arr[j];
 
        if (j + 1 == arr[num - 1])
        {
            count = count + 1;
        }
    }
 
    cout << count / 2 <<endl;
 
    return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User poketorena
Language C++14 (GCC 5.4.1)
Score 200
Code Size 479 Byte
Status AC
Exec Time 29 ms
Memory 640 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 1 ms 256 KB
0_01.txt AC 1 ms 256 KB
0_02.txt AC 1 ms 256 KB
1_00.txt AC 1 ms 256 KB
1_01.txt AC 29 ms 640 KB
1_02.txt AC 29 ms 640 KB
1_03.txt AC 29 ms 640 KB
1_04.txt AC 29 ms 640 KB
1_05.txt AC 29 ms 640 KB
1_06.txt AC 29 ms 640 KB
1_07.txt AC 29 ms 640 KB
1_08.txt AC 11 ms 384 KB
1_09.txt AC 24 ms 512 KB
1_10.txt AC 20 ms 512 KB
1_11.txt AC 6 ms 256 KB