#include <stdio.h>
#include <stdlib.h>

//---------------------------------------------------------------------------
int main(int argc, char **argv)
{
  int c;
  while((c = getchar())!='\n')
  {
    if (c >='A' && c <= 'Z') c+=('a'-'A');
    putchar(c);
  }
  putchar('\n');
  system("PAUSE");
  return 0;
}