#include<stdio.h>
int main(void){
int n = 0, k = 0, i = 0, j = 0;
char s[1024] = {};
	
	scanf ("%s", s);
	for ( n = 0; s[n] != '\0'; n++){
		k++;
	}
	for ( i = 0; i < k; i++){
		for(j = i ; j < k; j++){
			s[j] -= 1;
			s[j] = (s[j] == '@') ? 90 : s[j] ;
			
		}
	}

		printf ("%s",s);

	return 0;
}