#include <stdio.h>

int main(){
	int c = 0;
	int a = 0;
	int counter = 0;
	char small[] = "abcdefghijklmnopqrstuvwxyz";
    	char big[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	char d;
	while(c = 1){
		c = getchar();
		d = c;
		int a = 0;
		if(d == '\n'){
			counter++;
			break;
		}
		while(a > 26){
			if(d == small[a]){
				d = big[a];
				break;
			}else if(d == big[a]){
				d = small[a];
				break;
			}
			a++;		
		}
		c = d;
		putchar (c);
	}
	printf("\nPočet riadkov: %d\n",counter);
	return 0;
}