#include <iostream>
#include <algorithm>

using namespace std;

int main(void){

  int mountain[10];
  int num = 2;

  for( int i = 0 ; i < 10 ; i++ ){
    cin >> mountain[i];
  }

  sort( mountain , mountain + 10 );

  cout << mountain[9] << mountain[8] << mountain[7] << endl;
  return 0;
  }