Submission #2237361

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Source Code Expand

#include <iostream>
using namespace std;
const int N = 100000 + 10;

int n, a[N];

int main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; i ++) {
        scanf("%d", &a[i]);
    }

    int ans = 0, cnt = 0;
    a[n+1] = -1;
    for (int i = 1; i <= n+1; i ++) {
        if (a[i] != i) {
            ans += (cnt + 1) / 2;
            cnt = 0;
        } else {
            cnt ++;
        }
    }
    printf("%d\n", ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
./Main.cpp:10:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
                           ^

Judge Result