# return 있는 함수
def add(x,y):
    return x+y

def sub(x,y):
    return x-y

def mul(x,y):
    return x*y

def div(x,y):
    return x/y

n1 = add(11, 22)
n2 = sub(11, 22)
n3 = mul(11, 22)
n4 = div(11, 22)

print(n1)
print(n2)
print(n3)
print(n4)
