#include<stdio.h>
#include<ctype.h>
#include<string.h>
void encodemessage(char *input){
    int len=strlen(input);
    for(int i=0; i<len;i++){
        char ch=input[i];
        if(isalpha(ch)){
            if(islower(ch)){
                input[i]='a'+('z'-ch);
            }
            else if(isupper(ch)){
                input[i]='A'+ ('Z'-ch);
            }
        }else if(ch!= ' '){
            printf("Invalid Input\n");
            return;
        }
}
printf("%s\n",input);
}
int main(){
    char message[1000];
    fgets(message,szeof(message)stdin);
    size_t len=strlen(meassage);
    if(len>0 && message[len-1]=='\n'){
}
encodemessage(message);
return 0;
}