def fatorial(n):
    f=1
    for c in range (1,n+1):
        f*=c
    return f
def dobro(n):
    return n*2


def triplo(n):
    return n*3
def fatorial(n):
    f=1
    for c in range (1,n+1):
        f*=c
    return f
def dobro(n):
    return n*2


def triplo(n):
    return n*3