import os

operators_list = ["+", "-", "*", "%", "/"]
a = int(input("Įveskite skaičių: "))
operator = raw_input("Įveskite operatorių: ")
if operator not in operators_list:
    print("Nežinomas veiksmas!\nEgzistuojantys veiksmai: (+) | (-) | (*) | (/) | (%)")
    time.sleep(3)


b = int(input("Įveskite antrą skaičių: "))
if operator == "+":
	sum = a + b
	print("Suma yra: " + str(sum))

elif operator == "-":
	sum = a - b
	print("Suma yra: " + str(sum))

elif operator == "*":
	sum = a * b
	print("Suma yra: " + str(sum))

elif operator == "%":
	sum = a % b
	print("Suma yra: " + str(sum))

elif operator == "/":
	sum = a / b
	print("Suma yra: " + str(sum))