Submission #1560320


Source Code Expand

#define _CRT_SECURE_NO_WARNINGS

#include <cstdio>
#include <string>
#include <cmath>
#include <vector>
#include <list>

#include <random>
using namespace std;

int main(void) {
	int N, t;
	scanf("%d", &N);
	bool prev_match = false;
	int count = 0;
	for (int i = 1; i <= N; i++) {
		scanf("%d", &t);
		if (t == i) {
			if (prev_match) {
				prev_match = false;
			}
			else {
				count++;
				prev_match = true;
			}
		}
		else {
			prev_match = false;
		}
	}

	printf("%d\n", count);

	return 0;
}

Submission Info

Submission Time
Task D - Derangement
User yen_3141
Language C++14 (GCC 5.4.1)
Score 400
Code Size 533 Byte
Status AC
Exec Time 10 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:14:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
./Main.cpp:18:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &t);
                  ^

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 0 ms 128 KB
0_001.txt AC 0 ms 128 KB
0_002.txt AC 0 ms 128 KB
0_003.txt AC 0 ms 128 KB
1_004.txt AC 0 ms 128 KB
1_005.txt AC 9 ms 128 KB
1_006.txt AC 9 ms 128 KB
1_007.txt AC 9 ms 128 KB
1_008.txt AC 9 ms 128 KB
1_009.txt AC 9 ms 128 KB
1_010.txt AC 9 ms 128 KB
1_011.txt AC 10 ms 128 KB
1_012.txt AC 10 ms 128 KB
1_013.txt AC 10 ms 128 KB
1_014.txt AC 9 ms 128 KB