#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

int main() {
    int sum = 0;
    for (int i = 0; i < 9; ++i) {
        int b;
        cin >> b;
        sum += b;
    }

    cout << 55 - sum << endl;
    return 0;
}