242 offered a liberal arts degree. 116 offered a computer engineering degree. 467 offered a nursing degree. 35 offered a liberal arts degree and a computer engineering degree. 197 offered a liberal arts degree and a nursing degree. 95 offered a computer engineering degree and a nursing degree. 29 offered a liberal arts degree, a computer engineering degree, and a nursing degree. 36 offered none of these degrees. How many four-year colleges and universities were surveyed?