結果
問題 | No.895 MESE |
ユーザー | MiyamonY |
提出日時 | 2019-09-28 23:00:45 |
言語 | Scheme (Gauche-0.9.14) |
結果 |
AC
|
実行時間 | 1,809 ms / 2,000 ms |
コード長 | 1,775 bytes |
コンパイル時間 | 310 ms |
コンパイル使用メモリ | 7,068 KB |
実行使用メモリ | 37,704 KB |
最終ジャッジ日時 | 2024-04-14 07:04:36 |
合計ジャッジ時間 | 48,675 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1,374 ms
26,412 KB |
testcase_01 | AC | 1,380 ms
26,356 KB |
testcase_02 | AC | 1,383 ms
26,324 KB |
testcase_03 | AC | 1,384 ms
26,256 KB |
testcase_04 | AC | 1,389 ms
26,268 KB |
testcase_05 | AC | 1,381 ms
26,448 KB |
testcase_06 | AC | 1,378 ms
26,284 KB |
testcase_07 | AC | 1,380 ms
26,384 KB |
testcase_08 | AC | 1,389 ms
26,252 KB |
testcase_09 | AC | 1,376 ms
26,344 KB |
testcase_10 | AC | 1,378 ms
26,252 KB |
testcase_11 | AC | 1,388 ms
26,328 KB |
testcase_12 | AC | 1,382 ms
26,560 KB |
testcase_13 | AC | 1,521 ms
31,024 KB |
testcase_14 | AC | 1,740 ms
37,444 KB |
testcase_15 | AC | 1,736 ms
37,492 KB |
testcase_16 | AC | 1,598 ms
31,340 KB |
testcase_17 | AC | 1,406 ms
26,252 KB |
testcase_18 | AC | 1,781 ms
37,400 KB |
testcase_19 | AC | 1,781 ms
37,424 KB |
testcase_20 | AC | 1,781 ms
37,380 KB |
testcase_21 | AC | 1,781 ms
37,432 KB |
testcase_22 | AC | 1,808 ms
37,428 KB |
testcase_23 | AC | 1,778 ms
37,428 KB |
testcase_24 | AC | 1,780 ms
37,424 KB |
testcase_25 | AC | 1,780 ms
37,704 KB |
testcase_26 | AC | 1,774 ms
37,556 KB |
testcase_27 | AC | 1,809 ms
37,388 KB |
testcase_28 | AC | 1,793 ms
37,512 KB |
ソースコード
;;; File: main.scm ;; Author: ymiyamoto ;; ;; Created on Sat Sep 28 20:04:17 2019 ;; (define-syntax read-number (syntax-rules () ((_ nums) (define-values nums (apply values (map string->number (string-split (read-line) #\space))))))) (define-syntax read-numbers (syntax-rules () ((_ as) (define as (map string->number (string-split (read-line) #\space)))) ((_ as n) (define as (map (lambda (_) (map string->number (string-split (read-line) #\space))) (iota n)))))) (define-syntax 1+ (syntax-rules () ((_ x) (+ x 1)))) (define-syntax 1- (syntax-rules () ((_ x) (- x 1)))) (define MOD 1000000007) (define (mod+ x y) (modulo (+ x y) MOD)) (define (mod* a . b) (fold (lambda (x acc) (modulo (* x acc) MOD)) a b)) (define (make-comb num) (define fact-dp (make-vector num -1)) (define inv-fact-dp (make-vector num -1)) (define (fact n) (vector-ref fact-dp n)) (define (inv-fact n) (vector-ref inv-fact-dp n)) (vector-set! fact-dp 0 1) (let loop ((i 1)) (when (< i num) (vector-set! fact-dp i (mod* i (fact (1- i)))) (loop (1+ i)))) (let loop ((i 0)) (when (< i num) (vector-set! inv-fact-dp i (expt-mod (fact i) (- MOD 2) MOD)) (loop (1+ i)))) (lambda (n k) (define factn (fact n)) (define powk (inv-fact k)) (define pownk (inv-fact (- n k))) (modulo (* (modulo (* factn powk) MOD) pownk) MOD))) (define (solve) (define comb (make-comb (* 3 100000))) (read-number (a b c)) (print (fold mod+ 0 (map (lambda (i) (define x (comb (- (+ a b c) i 2) (1- c))) (define y (comb (- (+ a b) i 1) (1- b))) (define z (1- (expt-mod 2 (- (+ a b c) i 1) MOD))) (modulo (* (modulo (* x y) MOD) z) MOD)) (iota a 1))))) (solve)