TASK_13

def arithmeticOperation(operator, num1, num2):
    if operator == "+":
        return num1+num2
    elif operator == "-":
        return num1-num2
    elif operator == "*":
        return num1*num2
    elif operator == "/":
        return num1/num2


operator = input()
num1 = int(input())
num2 = int(input())
print(arithmeticOperation(operator, num1, num2))