第一题 不想加班的HR

#include<iostream>
#include<vector>
using namespace std;

int main() {
    int N, x;
    vector<int> q;
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> x;
        q.push_back(x);
    }
    double ans = 0;
    double cur = 0;
    for (int i = 0; i < q.size(); i++) {
        if (q[i] == 0) {
            cur=0;
        }
        else if (q[i] == 1) {
            ++cur;
        }
        else {
            cur = (cur + 1) * 0.5;
        }
        ans += cur;
    }
    cout << ans << endl;
    return 0;
}

第二题 被偷走的箱子

#include<iostream>
using namespace std;

int main() {

    int n;
    cin >> n;
    int R, C, L;
    R = 3;
    C = n + 1;
    L = 3;
    long long max = (long long)R * C * L;

    long long res = 0;
    res = max - n;
    cout << res << endl;

    return 0;
}