奶牛碑文运行出现错误

Question

对于：

出现了以下现象：

代码：

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

int main() {
    int n, s[200000] = { 0 }, count_c = 0, count_w = 0;
    char str[200001] = { 0 };
    long long sum = 0;
    cin >> n >> str;
    for (int i = 0; i < n - 1; i++) {
        switch (str[i]) {
            case 'C':
                ++count_c;
                break;
            case 'O':
                s[i] = count_c;
        }
    }
    for (int i = n - 1; i >= 0; i--) {
        switch (str[i]) {
            case 'W':
                ++count_w;
                break;
            case 'O':
                sum += count_w * s[i];
        }
    }
    cout << sum;
    return 0;
}

运行的系统信息为：

Exited with return code 0

我希望能AC，恳求帮助。

Answer 1

用动态规划