def s(x):
    return -x

x = [1, 4, 7, 3, 5]
print(x)
y = sorted(x)
print(y)
y = sorted(x, key=s)
print(y)

print()

s = lambda x : -x

print(x)
y = sorted(x, key=s)
print(y)
y = sorted(x, key=lambda x : -x)
print(y)
print(s(10))

print()
f = lambda x, y, z : (x - y) * z
y = f(1, 2, 3)
print(y)
y = (lambda x, y, z : (x - y) * z)(1, 2, 3)
print(y)