Submission #1757312


Source Code Expand

#include <iostream>
#include <stdio.h>
#include <string>
#include <cstdlib>
#include <cmath>
#include <cstring>
#include <math.h>
#include <vector>
#include <algorithm>
using namespace std;

int main(){
	int n;
	cin >> n;
	int a[n];
	for(int i = 0; i < n; i++){
		cin >> a[i];
	}

	int pair = 0;
	for(int i = 0; i < n; i++){
		if(i == a[a[i] - 1] - 1) pair ++;
	}
	cout << pair / 2<< endl;
	return 0;
}

Submission Info

Submission Time
Task B - Friendly Rabbits
User nabla_delta
Language C++14 (GCC 5.4.1)
Score 200
Code Size 427 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 36 ms 640 KB
1_02.txt AC 37 ms 640 KB
1_03.txt AC 36 ms 640 KB
1_04.txt AC 36 ms 640 KB
1_05.txt AC 36 ms 640 KB
1_06.txt AC 36 ms 640 KB
1_07.txt AC 36 ms 640 KB
1_08.txt AC 14 ms 384 KB
1_09.txt AC 30 ms 512 KB
1_10.txt AC 26 ms 512 KB
1_11.txt AC 7 ms 256 KB