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

void CapsLock() {
    
    int x;         
    int numlines = 0;  
    int check = 0;  

    while ((x = getchar()) != EOF) {

        if (x == '\n') {
            putchar('\n');
            numlines++;
        }
        else if (islower(x)) {
            putchar(x - 'a' + 'A');
            check = 1;
        }
        
        else if (isupper(x)) {
            putchar(x - 'A' + 'a');
            check = 1;
        }
        else if (x >= 32 && x <= 126) {
            putchar(x);
        }
    }

    printf("\nLines count: %d\n", numlines); 
}

int main() {

    CapsLock();   

    return 0;

}