#VI LAB1/1

#VI LAB1/1 made by Fensa08
# -*- coding: utf-8 -*-
__operators = ('+', '-', '/', '//', '*', '**', '%')


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

  #  print(str(x) + operator + str(y))

    # 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
    else:
        print("GRESKA PRI VNES")
    print(rezultat)
    return rezultat


if __name__ == "__main__":
    calculator()