#include<stdio.h>
int main(void)
{
int num;
printf("Digite um numero: \n");
if(num>20)
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KCmludCBtYWluKHZvaWQpCnsKICBpbnQgbnVtOwogIHByaW50ZigiRGlnaXRlIHVtIG51bWVybzogXG4iKTsKICBzY2FuZigiJWQiLCZudW0pOwogIAogIGlmKG51bT4yMCkKICAgIHByaW50ZigiJWRcbiIsbnVtKTsKICAgIAogIHJldHVybiAwOwoKfQ==