#include <bits/stdc++.h>

using namespace std;

#define REP(i, n) for(int i = 0; i < n; i++)

int main() {
    int sum = 0;
    REP(i, 9) {
        int b;
        cin >> b;
        sum += b;
    }
    cout << 55 - sum << endl;
    return 0;
}