1924번 '2007년'

enum Day: Int{
    case SUN = 6
    case MON = 0
    case TUE = 1
    case WED = 2
    case THU = 3
    case FRI = 4
    case SAT = 5
}
let daysOfMonth: [Int: Int] = [1: 31, 2: 28, 3: 31, 4: 30, 5: 31, 6: 30, 7: 31, 8: 31, 9: 30, 10: 31, 11: 30, 12: 31]
 
let input = readLine()?.split(separator: " ")
let x = Int((input?.first?.description)!)!
let y = Int((input?.last?.description)!)!
var count = 0
for i in 1..<x{
    count += daysOfMonth[i]!
}
count += y
count -= 1
print(Day.init(rawValue: count % 7)!)
 
 

결과값 출력을 위해 열거형을 사용해 보았다.