print "My Calc"
x = raw_input("First number: ")
y = raw_input("Second number: ")
print "chose technique [1 2 3 4]"
z = raw_input("1 +, 2 -, 3 *, 4 /, :  ")
if z == 1:
        print x + y
elif z == 2:
        print x - y
elif z == 3:
        print x * y
elif z == 4:
        print x / y
else:
        print "do not comply"