import java.util.*;
/**
* @author lihao
* @Date 2022/9/24 19:08
*/
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String temp = sc.nextLine();
//The form before case conversion
System.out.println(temp);
StringBuffer sb = new StringBuffer();
for(int i=0;i<temp.length();i++){
char c=temp.charAt(i);
if(c>='A' && c<='Z'){
c+=32;
}else{
c-=32;
}
sb.append(c);
}
//The form after upper case conversion
System.out.println(sb);
}
}
