#include<stdio.h>

   int main(){
        int counter=0, Sym;
        char OutSym;

        while(1){
          Sym=getchar();
         if(Sym==EOF || Sym==0)break;
         else if(Sym<='Z'&&Sym>='A')Sym +=32;
         else if(Sym<='z'&&Sym>='a')Sym-=32;
        counter++;
        OutSym=Sym;
        putchar(OutSym);
}
        printf("\nPočet riadkov: %d\n",counter);
   return 0;
}