Submission #1605759


Source Code Expand

#include <bits/stdc++.h>
using namespace std;

int n, p[int(1e5+1)];
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> p[i];
	int cnt = 0;
	for(int i = 1; i <= n; i++) if(i == p[i]) {
		if(i > 1 && p[i-1] == i-1) swap(p[i], p[i-1]);
		else swap(p[i], p[i+1]);
		++cnt;
	}
	cout << cnt;
}

Submission Info

Submission Time
Task D - Derangement
User zawini54
Language C++14 (GCC 5.4.1)
Score 400
Code Size 358 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