#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int N; cin >> N;
    cin.ignore();
    string s; getline(cin, s);
    int ok = 1;
    for(char c : s) ok &= c != ' ';
    if(!ok) {
        cout << "\"assert\"" << endl;
    } else {
        int a = stoi(s);
        int b,c; cin >> b >> c;
        set<int> v = {a+b, b+c, c+a};
        auto it = v.end(); it--; it--;
        cout << *it << endl;
    }
}