#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for (int i = 0; i < (n); i++)
typedef long long ll;
// Welcome to my source code!

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