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

int main() {
  int n;
  cin >> n >> ws;
  string s;
  getline(cin, s);
  if (s.find(' ') != string::npos) cout << "\"assert\"\n";
  else {
    int64_t a = atol(s.c_str());
    int64_t b, c;
    cin >> b >> c;
    set<int64_t> se({a + b, b + c, c + a});
    cout << *next(se.rbegin()) << '\n';
  }
  return 0;
}