# -*- coding: utf-8 -*-
__operators = ('+','-', '/' , '//', '*', '**', '%')


def calculator():
    x=input()
    operator=input()
    y=input()



    # your code here
    rezultat = 0
    if operator =='+':
        rezultat = x + y
    elif operator =='-':
        rezultat = x - y
    elif operator =='/':
        rezultat = x / y
    elif operator =='//':
        rezultat = x // y
    elif operator =='*':
        rezultat = x * y
    elif operator =='**':
        rezultat = x ** y
    elif operator =='%':
        rezultat = x % y

    print rezultat
    return rezultat

if __name__ == "__main__":
    calculator()