x = int(input("Write down x: "))
y = int(input("Write down y: "))
z = int(input("Write down z: "))
if x>=y and x>=z:
        print("The biggest is x:", x)
if y>=x and y>=z:
        print("The biggest is y:", y)
if z>=y and z>=x:
        print("The biggest is z:", z)