python/TangDou/Mkx/MakeXing/2023C2_1/1.cpp

#include <bits/stdc++.h>

using namespace std;
int main() {
    int s;
    cin >> s;
    for (int i = 1; i <= 5; i++) {
        int x;
        cin >> x;
        s -= x;
    }
    cout << s << endl;
    return 0;
}