matteo

def conta(A,min,max):
    return matteo(A,min,max,0)

def matteo(A,min,max,livello):

    if A.left == null and A.right == null:
        if livello%2 == 1 and A.val%2 == 0 and nonAppartiene(min,max,A.val):
            return A.val
    else:
        return 0

    conta = 0

    if livello%2 == 1 and A.val%2 == 0 and nonAppartiene(min,max,A.val):
            conta += A.val

    if A.left != null:
        conta += matteo(A.left,min,max,livello+ 1)
    if A.right != null:
        conta += matteo(A.right,min,max,livello+ 1)

    return conta