#include"bits/stdc++.h" using namespace std; using ll = long long; using ld = long double; #define rep(i,m,n) for(ll i=(ll)m;i<(ll)n;i++) #define Endl endl #define pr(i,j) make_pair(i,j) const ll mod = 998244353; const ll inf = 5e18; const ld pi = 3.14159265358979; int main() { ll s = 55; rep(i, 0, 9) { ll b; cin >> b; s -= b; } cout << s << endl; }