#include <stdio.h>
#include <ctype.h>

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