#include <stdio.h>

int main(void) {
    int c;
    int riadky = 0;

    while ((c = getchar()) != EOF) {
        if (c == '\n') {
            putchar('\n');
            riadky++;
            continue;
        }


        if (c < 32 || c == 127) {   
            continue;
        }

        if (c >= 'a' && c <= 'z') {
            putchar(c - 'a' + 'A');
        } else if (c >= 'A' && c <= 'Z') {
            putchar(c - 'A' + 'a');
        } else {

            putchar(c);
        }
    }

    printf("\nPocet riadkov: %d\n", riadky);
    return 0;
}