#include <iostream>
#include <vector>
#include<algorithm>
using namespace std;

#define ll long long

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

    cout<<55-sum<<"\n";


    return 0;
}