#include <bits/stdc++.h>
#define int long long
using namespace std;
int n, a, sum = 0;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        cin >> a;
        sum += a;
    }
    cout << sum;
    return 0;
}

完美TLE

话说计算机每秒可以算1亿次，2秒绝对能A了，为啥还是T