Submission #2179737


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
typedef long long ll;

const int maxn = 0;
int n , a[100009];

int main()
{
	ios_base::sync_with_stdio(0); cin.tie(NULL);
	cin >> n;
	for(int i=0;i<n;i++) cin >> a[i];
	int ans = 0;
	for(int i=0;i<n;i++)
	{
		if(a[i] == i + 1)
		{
			swap(a[i] , a[(i + 1) % n]);
			ans++;
		}
	}
	cout << ans << endl;
}

Submission Info

Submission Time
Task D - Derangement
User bugzzii
Language C++14 (GCC 5.4.1)
Score 400
Code Size 390 Byte
Status AC
Exec Time 9 ms
Memory 640 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 15
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt
Case Name Status Exec Time Memory
0_000.txt AC 1 ms 256 KB
0_001.txt AC 1 ms 256 KB
0_002.txt AC 1 ms 256 KB
0_003.txt AC 1 ms 256 KB
1_004.txt AC 1 ms 256 KB
1_005.txt AC 9 ms 640 KB
1_006.txt AC 9 ms 640 KB
1_007.txt AC 9 ms 640 KB
1_008.txt AC 9 ms 640 KB
1_009.txt AC 9 ms 640 KB
1_010.txt AC 9 ms 640 KB
1_011.txt AC 9 ms 640 KB
1_012.txt AC 9 ms 640 KB
1_013.txt AC 9 ms 640 KB
1_014.txt AC 9 ms 640 KB