a = int(input("1 число: "))
b = int (input("2 число: "))
go = str(input("+, -, *, / : "))
if go == "+":
    c = a+b
    print(c)
if go == "*":
    d = a*b
    print(d)
if go == "-":
    e = a-b
    print(e)
if go == "/":
    t = a/b 
    print(t)