In the survey of 278 college students, it is discovered that 98 like broccoli, 65 like brussels sprouts, 26 like both brussels sprouts and broccoli, 22 like both brussels sprouts and cauliflower, 56 like cauliflower, 20 like both broccoli and cauliflower and 15 of the students like all three vegetables. How many of the 278 college students don't like any of the 3 vegetables?