def realce(s1):
    print('|', '_' * 20, '|')
    print('|', '_' * 20, '|')
    print(s1)
    print('|', '_' * 20, '|')
    print('|', '_' * 20, '|')

#Programa Principal
realce('          Vini')


def sub2(x, y):
    res = x - y
    print(res)

#Programa principal
sub2(5, 7)
sub2(7, 5)
sub2(y = 7, x = 5)