单词录入 原题

#include <iostream>
using namespace std;

int main() {
    int n, c, t;
    cin >> n >> c;
    int ans = 0, last = 0;
    for (int i = 1; i <= n; i++) {
        scanf("%d", &t);
        if (t - last > c) {
            ans = 0;
        }
        ans++;
        last = t;
    }
    cout << ans << endl;
    return 0;
}

字符串删减 原题

#include <iostream>
using namespace std;

int main() {
    int n;
    string s;
    cin >> n >> s;
    int res = 0, cnt = 0;
    for (int i = 0; i < n; i ++ ) {
        if (s[i] == 'x') {
            cnt++;
            if (cnt == 3) {
                res++, cnt--;
            }
        } else {
            cnt = 0;
        }
    }
    cout << res << endl;
    return 0;
}

另外一题 摩尔投票题