#include<stdio.h>

int main() {
	char str[1024];

	//入力値受け取り
	scanf("%s", str);

	for (int i = 0; str[i] != '\0'; i++) {
		if ((int)str[i] - (int)'A' < i + 1)
			str[i] = (int)'Z' - (i - (int)str[i] + (int)'A') % 26;
		else
			str[i] = (int)str[i] - i - 1;
	}

	printf("YXWVUTSRQPONMLKJIHGFEDCBAZYXWVUTSRQPONMLKJIHGFEDCBAZYXWVUTSRQPONMLKJIHGFEDCBAZYXWVUTSRQPONMLKJIHGFEDCBAZ\n");
	// 表示
	printf("%s", str);
	return 0;
}