C++题解

AC代码

#include <bits/stdc++.h>
using namespace std;

int main() {
	int n, ans = 0, sum = 0, a[1010] = {0}, ans1 = 0;
	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> a[i];
	}
    if (n == 0) {
        cout << 0 << endl;
        return 0;
    }
    for (int i = 1; i < n; ++i) {
        if (a[i] == 1) {
            ++ans1;
            continue;
        } else {
            break;
        }
    }
    if (ans1 == n - 1) {
        cout << 0;
        return 0;
    }
    for (int i = 0; i < n; ++i) {
        if (a[i] == 1) {
            ans = 0;
            for (int j = i; j < n; ++j) {
                if (a[j] == 0) {
                    j = n;
                    sum = max(sum, ans);
                }
                ++ans;
            }
        }
    }
    cout << sum + 1 << endl;
	return 0;
}