Submission #1767970

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Source Code Expand

#include <cstdio>
#include <cmath>
#include <numeric>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <utility>
#include <string>

using namespace std;

typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ul;

const int iinf = 1 << 29;
const long long linf = 1l << 61;

int N;
int p[10800];

int main(int argc, char* argv[])
{
	scanf("%d", &N);
	for(int i = 0; i < N; i++) scanf("%d", &p[i]);

	int ans = 0;
	int j = 0;
	for(int i = 0; i < N; i++)
	{
		if(p[i] == i + 1)
		{
			j++;
		}
		else
		{
			ans += j / 2 + j % 2;
			j = 0;
		}
	}
	ans += j / 2 + j % 2;
	printf("%d\n", ans);

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:27:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
./Main.cpp:28:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 0; i < N; i++) scanf("%d", &p[i]);
                                               ^

Judge Result