Submission #1503661


Source Code Expand

#include<iostream>
using namespace std;

const int MAX = 200000;
int main() {
	int N, count = 0;
	static int a[MAX];
	cin >> N;
	for (int i = 0;i < N;i ++) cin >> a[i];
	for (int i = 0;i < N;i ++) {
		if (a[a[i] - 1] == i + 1) count ++;
	}
	cout << count / 2;
	return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User cirno3153
Language C++14 (GCC 5.4.1)
Score 200
Code Size 286 Byte
Status AC
Exec Time 37 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 35 ms 640 KB
1_02.txt AC 35 ms 640 KB
1_03.txt AC 36 ms 640 KB
1_04.txt AC 36 ms 640 KB
1_05.txt AC 35 ms 640 KB
1_06.txt AC 37 ms 640 KB
1_07.txt AC 35 ms 640 KB
1_08.txt AC 14 ms 384 KB
1_09.txt AC 30 ms 512 KB
1_10.txt AC 25 ms 512 KB
1_11.txt AC 6 ms 256 KB