#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int main()
{
	char str[101] = "";
	scanf("%s", &str, sizeof(str));

	for (int i = 0;str[i] != '\0';i++)
	{
		int smallLast = 'z';
		int bigLast = 'Z';
		if (str[i] <= smallLast && str[i] > bigLast)
		{
			str[i] -= smallLast - bigLast;
		}
		else
		{
			str[i] += smallLast - bigLast;
		}
	}

	printf("%s", str);

	return 0;
}