#include <iostream>
using std::cerr, std::cin, std::cout, std::endl, std::fixed, std::flush;
#include <string>
using std::stoi, std::stol, std::string, std::to_string;
static_assert(sizeof(long) == 8);
int main()
{
  string s;
  cin >> s;
  cout << (char)(s[0]-32);
  cin >> s;
  cout << (char)(s[0]-32);
  cin >> s;
  cout << (char)(s[0]-32);
  cout << '\n';
  return 0;
}
/*
  File : ~/kyopro/yukicoder/554/3195.cpp
  Date : 2025/07/11
  Time : 21:20:51
*/