結果

問題 No.81 すべて足すだけの簡単なお仕事です。
コンテスト
ユーザー norioc
提出日時 2025-06-26 08:38:48
言語 Scheme
(Gauche-0.9.15)
結果
AC  
実行時間 97 ms / 5,000 ms
コード長 2,580 bytes
コンパイル時間 381 ms
コンパイル使用メモリ 8,352 KB
実行使用メモリ 23,552 KB
最終ジャッジ日時 2025-06-26 08:38:54
合計ジャッジ時間 5,019 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge1
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ファイルパターン 結果
other AC * 30
権限があれば一括ダウンロードができます

ソースコード

diff # 

(use scheme.list)
(use util.match)
(use srfi.13)  ; string
(use srfi.42)  ; list-ec
(use srfi.197) ; chain
(use gauche.collection)
(use gauche.generator)

(define input read-line)

(define (ii)
  (string->number (read-line)))

(define (li)
  (let ((s (read-line)))
    (map string->number (string-split s " "))))

(define (prn . args)
  (for-each (lambda (i x)
              (when (> i 0)
                (display " "))
              (display x))
            (iota (length args))
            args)
  (newline))

(define int string->number)
(define str x->string)

(define-method min ((xs <sequence>))
  (apply min xs))
(define-method max ((xs <sequence>))
  (apply max xs))

(define (minmax . xs)
  (values->list (apply min&max xs)))
(define-method minmax ((xs <sequence>))
  (values->list (apply min&max xs)))

(define (sum xs) (apply + xs))

(define (divmod a b)
  (values->list (div-and-mod a b)))

(define (1+ n) (+ n 1))
(define (1- n) (- n 1))
(define (!= a b) (not (= a b)))

(define pow
  (case-lambda
   ((a b) (expt a b))
   ((a b m) (expt-mod a b m))))

(define isqrt exact-integer-sqrt)

(define ++ string-append)

(define-method frequencies ((xs <sequence>))
  (rlet1 ht (make-hash-table)
    (for-each (^x (hash-table-update! ht x 1+ 0))
              xs)))

(define (yn b)
  (prn (if b "Yes" "No")))

(define-macro (input! bindings . body)
  (let loop ((bs (reverse bindings))
             (res '()))
    (if (null? bs)
        `(let*-values ,res
           ,@body)
        (cond
         ((symbol? (car bs))
          (loop (cdr bs)
                (cons `((,(car bs)) (values (ii)))
                      res)))
         ((list? (car bs))
          (loop (cdr bs)
                (cons `(,(car bs) (apply values (li)))
                      res)))
         (else
          'error)))))

#;
(define-macro (clet1 pat expr . body)
  `(receive ,pat (apply values ,expr)
     ,@body))

(define mlet1 match-let1)

(define (decimal-expansion rat)
  (when (< rat 0)
    (error "zero or positive required, but got:" rat))

  (let ((num (numerator rat))
        (den (denominator rat)))
    (generate (^(yield)
               (let loop ((num num))
                 (yield (div num den))
                 (loop (* 10 (mod num den))))))))

(let* ((N (ii))
       (A (list-ec (: _ N) (input))))

  (let ((tot (sum (map (^a (int (++ "#e" a)))
                       A))))
    (mlet1 (a . xs) (generator->list (decimal-expansion (abs tot)) 11)
      (format #t "~a~a.~a\n"
              (if (negative? tot) "-" "")
              a
              (string-join (map str xs) "")))))
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