Submission #1674476


Source Code Expand

#include <iostream>
#include <vector>
#include <string>

using namespace std;

int main() {
	
	int n;
	vector<int> a;
	int tmp;
	int ans = 0;

	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> tmp;
		a.push_back(tmp);
	}

	int j;
	for (int i = 0; i < a.size(); ++i) {
		j = a[i];
		if (a[j - 1] == i + 1) {
			++ans;
		}
	}
	cout << ans / 2 << endl;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User smartgoods
Language C++14 (GCC 5.4.1)
Score 200
Code Size 381 Byte
Status AC
Exec Time 31 ms
Memory 892 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 892 KB
1_02.txt AC 31 ms 892 KB
1_03.txt AC 29 ms 892 KB
1_04.txt AC 29 ms 892 KB
1_05.txt AC 29 ms 892 KB
1_06.txt AC 29 ms 892 KB
1_07.txt AC 29 ms 892 KB
1_08.txt AC 11 ms 640 KB
1_09.txt AC 24 ms 892 KB
1_10.txt AC 20 ms 892 KB
1_11.txt AC 6 ms 384 KB