#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
int main(){
int count = 0;
int c = 0;
int riadok = 0;
while(c != EOF){
c = getchar();
count = 0;	
 if((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')){
if (c >= 'a' && c <= 'z'){
c = c - 32;
printf("%c\n", c);
count = 1;
riadok++;
}
if (c >= 'A' && c <= 'Z' && count == 0){
c = c + 32;
printf("%c\n", c);
riadok++;
}
}
/*else{
riadok++;
}*/
count = 0; 
}
printf("\nPočet riadkov: %d\n", riadok);
return 0;
}