#include <stdio.h>

int main (){
	int c = 0;
	int counter = 0;
	while(c != EOF){
		c = getchar();
		if (c >= 'a' && c <= 'z'){
			putchar (c - 'a' + 'A');
		}
		else if ( c >= 'A' && c <= 'Z'){
			putchar (c + 'a' - 'A');
		}
	counter++;
	}
	
	printf("\nPočet riadkov: %d\n",counter);
	
	return 0;
}