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