#include <stdio.h>
int main(){
    int i = 0;
    int riadok = 0;
    while ((i = getchar()) && i != EOF) {
        if(i == '\n'){
            riadok++;
        }
        if(i >= 'a' && i <= 'z'){
            i = i-32;
            }
        else if(i >= 'A' && i <= 'Z'){
            i = i+32;
        }
        putchar(i);
    }
    printf("\nLines count: %d\n", riadok);
    return 0;
}