#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;

main()
{
  string s1, s2, s3;

  s1 = "AAA";
  s2 = "BBB";
  s3 = "BBB";

  cout << s1 + s2 << endl;
  cout << (s1 == s2) << endl;
  cout << (s2 == s3) << endl;
  cout << (s1 < s3) << endl;

}