#include <bits/stdc++.h>
using namespace std;
using ll  = long long;

#define rep(i,n) for(ll i=(0)  , i##_xxxx=(n); i < i##_xxxx; ++i)

int main(){
    string s1, s2;
    getline(cin,s1);
    getline(cin,s2);
    
    ll N = stol(s1);
    bool flag = false;
    rep(i,s2.size())if(s2[i]==' ')flag=true;
    if(flag){
        cout<<"\"assert\""<<endl;
    }else{
        ll a = stol(s2);
        ll b,c;
        cin>>b>>c;
        set<ll> S{a+b,b+c,c+a};
        vector<ll> v(S.rbegin(), S.rend());
        cout << v[1] << endl;
    }
}