Submission #1559170

---

Source Code Expand

#include <bits/stdc++.h>

const int maxn = 1e5 + 3;
int n, a[maxn];

int main() {
	scanf("%d", &n);
	for(int i = 0; i < n; ++i)
		scanf("%d", a + i);
	int ans = 0;
	for(int i = 0; i < n; ++i) {
		if(a[i] == i + 1) {
			if(i + 1 < n)
				std::swap(a[i], a[i + 1]);
			else
				std::swap(a[i], a[i - 1]);
			++ans;
		}
	}
	printf("%d\n", ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:9:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a + i);
                     ^

Judge Result