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【もげぞうβ】atcoder beginner contest001をやる

Last updated at Posted at 2018-12-01

PeerCast プログラミング配信 Advent Calendar 2018 一日目

はい、もげぞうβです。
カレンダー1日目は、atcoder beginner contest001をやりました。

  • A問題
(defun abc001a ()
  (format t "~d~%" (- (read) (read))))
  • B問題
    いいのかコレ
(defun abc001b ()
  (let ((vv 0)
	(m (read)))
    (cond
      ((> 100 m)
       nil)
      ((>= 5000 m 100)
       (setf vv (* (/ m 1000) 10)))
      ((>= 30000 m 6000)
       (setf vv (+ (/ m 1000) 50)))
      ((>= 70000 m 35000)
       (setf vv (+ (/ (- (/ m 1000) 30) 5) 80)))
      ((> m 70000)
       (setf vv 89)))
    (format t "~2,'0d~%" vv)))
  • C問題
    うーん・・・(´・ω・`)
(defun hoge (x)
  (multiple-value-bind (a b)
      (floor (* 10 x) 1)
    (if (>= b 0.5)
	(incf a))
    (/ a 10.0)))

(defun abc001c ()
  (let ((x (/ (read) 10.0))
	(y (hoge (/ (read) 60.0)))
	(dir "N") (W 0))
    (cond
      ((and (> 33.75 x) (>= x 11.25))
       (setf dir "NNE"))
      ((and (>= x 33.75) (> 56.25 x))
       (setf dir "NE"))
      ((and (>= x 56.25) (> 78.75 x))
       (setf dir "ENE"))
      ((and (>= x 78.75) (> 101.25 x))
       (setf dir "E"))
      ((and (>= x 101.25) (> 123.75 x))
       (setf dir "ESE"))
      ((and (>= x 123.75) (> 146.25 x))
       (setf dir "SE"))
      ((and (>= x 146.25) (> 168.75 x))
       (setf dir "SSE"))
      ((and (>= x 168.75) (> 191.25 x))
       (setf dir "S"))
      ((and (>= x 191.25) (> 213.75 x))
       (setf dir "SSW"))
      ((and (>= x 213.75) (> 236.25 x))
       (setf dir "SW"))
      ((and (>= x 236.25) (> 258.75 x))
       (setf dir "WSW"))
      ((and (>= x 258.75) (> 281.25 x))
       (setf dir "W"))
      ((and (>= x 281.25) (> 303.75 x))
       (setf dir "WNW"))
      ((and (>= x 303.75) (> 326.25 x))
       (setf dir "NW"))
      ((and (>= x 326.25) (> 348.75 x))
       (setf dir "NNW"))
      (t (setf dir "N")))
    (cond
      ((>= 0.2 y 0)
       (setf W 0
	     dir "C"))
      ((>= 1.5 y 0.3)
       (setf W 1))
      ((>= 3.3 y 1.6)
       (setf W 2))
      ((>= 5.4 y 3.4)
       (setf W 3))
      ((>= 7.9 y 5.5)
       (setf W 4))
      ((>= 10.7 y 8.0)
       (setf W 5))
      ((>= 13.8 y 10.8)
       (setf W 6))
      ((>= 17.1 y 13.9)
       (setf W 7))
      ((>= 20.7 y 17.2)
       (setf W 8))
      ((>= 24.4 y 20.8)
       (setf W 9))
      ((>= 28.4 y 24.5)
       (setf W 10))
      ((>= 32.6 y 28.5)
       (setf W 11))
      ((>= y 32.7)
       (setf W 12)))
    (format t "~a ~d~%" dir W)))
  • D問題
    あとで!

とりあえず配信できてよかった。

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