#pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; typedef unsigned long long ull; typedef long long ll; typedef long double ld; typedef pair<int,int> p32; typedef pair<ll,ll> p64; typedef pair<double,double> pdd; typedef vector<ll> v64; typedef vector<int> v32; typedef vector<vector<int> > vv32; typedef vector<vector<ll> > vv64; typedef vector<vector<p64> > vvp64; typedef vector<p64> vp64; typedef vector<p32> vp32; typedef vector<bool> vb; typedef vector<vector<bool> > vbb; //ll MOD = 1e9+7; double eps = 1e-12; #define forn(i,e) for(int i = 0; i < e; i++) #define forsn(i,s,e) for(ll i = s; i < e; i++) #define rforn(i,s) for(ll i = s; i >= 0; i--) #define rforsn(i,s,e) for(ll i = s; i >= e; i--) #define ln "\n" #define dbg(x) cout<<#x<<" = "<<x<<ln #define mp make_pair #define pb push_back #define fi first #define se second #define INF 2e18 #define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL) #define all(x) (x).begin(), (x).end() #define sz(x) ((ll)(x).size()) #define pob pop_back //#include <conio.h> void setIO(string s) { // the argument is the filename without the extension freopen((s+".in").c_str(),"r",stdin); freopen((s+".out").c_str(),"w",stdout); } int main(){ int x=55; forn(i,9){ int a; cin>>a; x-=a; } cout<<x<<ln; return 0; }