Submission #893878

Source Code Expand

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int a[100010];
    for (int i=0; i<n; i++) {
        cin >> a[i];
        a[i]--;
    }
    int ans=0;
    for (int i=0; i<n; i++) {
        if (a[i] > i && a[a[i]] == i) ans++;
    }
    cout << ans << endl;
    return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User fangyi
Language C++14 (GCC 5.4.1)
Score 200
Code Size 329 Byte
Status AC
Exec Time 35 ms
Memory 640 KiB

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 KiB
0_01.txt AC 3 ms 256 KiB
0_02.txt AC 3 ms 256 KiB
1_00.txt AC 3 ms 256 KiB
1_01.txt AC 35 ms 640 KiB
1_02.txt AC 35 ms 640 KiB
1_03.txt AC 35 ms 640 KiB
1_04.txt AC 35 ms 640 KiB
1_05.txt AC 35 ms 640 KiB
1_06.txt AC 35 ms 640 KiB
1_07.txt AC 35 ms 640 KiB
1_08.txt AC 15 ms 384 KiB
1_09.txt AC 29 ms 512 KiB
1_10.txt AC 25 ms 512 KiB
1_11.txt AC 8 ms 256 KiB