var1 =int(input("enter your first number :"))
var2 = int(input("enter your second number :"))
print('Witch oprator use :'+'/,*,-,+')
oprator = input()
if var1==45 and var2==3and oprator=='*':
print(555)
elif var1==56 and var2== 9 and oprator=='+':
print(77)
elif var1 == 56 and var2== 6 and oprator=='/':
print(4)
elif oprator == '+' :
var3 = var1+var2
print(var3)
elif oprator == '-' :
var4 = var1-var2
print(var4)
elif oprator == '*' :
var5 = var1*var2
print(var5)
elif oprator == '/' :
var6 = var1/var2
print(var6)