Submission #1558423

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Source Code Expand

#include <algorithm>
#include <cstdio>
#include <cstring>
#include <vector>

int cnt[100002];

int main()
{
#ifdef LOCAL_JUDGE
    freopen("B.in", "r", stdin);
#endif
    int n;
    while (scanf("%d", &n) == 1) {
        int result = 0, cnt = 0;
        for (int i = 0, p; i < n; ++ i) {
            scanf("%d", &p);
            p --;
            if (p == i) {
                cnt ++;
            } else {
                result += cnt + 1 >> 1;
                cnt = 0;
            }
        }
        result += cnt + 1 >> 1;
        printf("%d\n", result);
    }
}

Submission Info

Compile Error

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

Judge Result