//Fatorial
int fat(int n){
    if(n == 1) return 1;
    return n * fat(n-1);
}
//Fibonacci
int fibo(int n){
    printf("fibo(%d)\n", n);
    if(n == 1 || n == 2) return 1;
    return fibo(n-1) + fibo(n-2);
}