import java.util.Scanner
Scanner sc = new Scanner(System.in); //스캐너 객체
https://mine-it-record.tistory.com/103
String str = "Hello_World";
System.out.println(str.toUpperCase()); //HELLO_WORLD
System.out.println(str.toLowerCase()); //hello_world
import java.util.Scanner;
class Solution
{
public static void main(String args[]) throws Exception
{
Scanner sc = new Scanner(System.in);
String str = sc.next();
System.out.println(str.toUpperCase());
}
}