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

int main()
{   
    char simb;
    int riad=0;
    while(1){
    simb=getchar();
    if(islower(simb)){
        simb-=32;
    }
    else if (isupper(simb)){
        simb+=32;
    }
    else if(simb==EOF){
        break;    
    }
    putchar(simb);
    if(simb=='\n'){
    riad++;
    }
    }
    printf("%d",riad);
    return 0;
}