#define _DEBUG 0
#include<stdio.h>
#include<stdbool.h>
#include<string.h>
#include<ctype.h>
int main(void)
{
  int scan;//scanf警告用
  char s[11];
  scan=scanf("%s",s);printf("%c",toupper(s[0]));
  scan=scanf("%s",s);printf("%c",toupper(s[0]));
  scan=scanf("%s",s);printf("%c",toupper(s[0]));
  return 0;
}