結果

問題 No.844 split game
ユーザー dot_haraai
提出日時 2021-06-01 22:15:49
言語 Nim
(2.2.0)
結果
AC  
実行時間 151 ms / 2,000 ms
コード長 2,038 bytes
コンパイル時間 4,472 ms
コンパイル使用メモリ 88,704 KB
実行使用メモリ 17,280 KB
最終ジャッジ日時 2024-11-09 00:19:23
合計ジャッジ時間 8,737 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 56
権限があれば一括ダウンロードができます
コンパイルメッセージ
/home/judge/data/code/Main.nim(2, 18) Warning: Use the new 'sugar' module instead; future is deprecated [Deprecated]
/home/judge/data/code/Main.nim(1, 8) Warning: imported and not used: 'times' [UnusedImport]
/home/judge/data/code/Main.nim(2, 26) Warning: imported and not used: 'strformat' [UnusedImport]
/home/judge/data/code/Main.nim(2, 18) Warning: imported and not used: 'future' [UnusedImport]
/home/judge/data/code/Main.nim(2, 37) Warning: imported and not used: 'deques' [UnusedImport]
/home/judge/data/code/Main.nim(2, 8) Warning: imported and not used: 'critbits' [UnusedImport]
/home/judge/data/code/Main.nim(1, 73) Warning: imported and not used: 'intsets' [UnusedImport]
/home/judge/data/code/Main.nim(1, 60) Warning: imported and not used: 'sets' [UnusedImport]
/home/judge/data/code/Main.nim(1, 66) Warning: imported and not used: 'lists' [UnusedImport]

ソースコード

diff #

import times, strutils, sequtils, math, algorithm, tables, sets, lists, intsets
import critbits, future, strformat, deques
template `max=`(x,y) = x = max(x,y)
template `min=`(x,y) = x = min(x,y)
template `mod=`(x,y) = x = x mod y
template scan2 = (scan(), scan())
template scan3 = (scan(), scan())
let read* = iterator: string {.closure.} =
    while true: (for s in stdin.readLine.split: yield s)
proc scan(): int = read().parseInt
proc scanf(): float = read().parseFloat
proc toInt(c:char): int =
    return int(c) - int('0')



proc solveDP():int=
  var
    (n,m,a)=(scan(),scan(),scan())
    lrp = newseqwith(m,(scan(),scan(),scan()))
    le = newseqwith(n+2,newseq[int]())
    re = newseqwith(n+2,newseq[int]())
    dp = newseqwith(n+2,newseqwith(2,-int.high.div(4)))
  lrp = lrp.sorted()
  dp[1][1]=0
  for idx,(l,r,p) in lrp:
    le[l].add(idx)
    re[r].add(idx)
  for i in 1..n+1:
    #echo "i:", i
    if i>1:
      dp[i][0].max=max(dp[i-1][0],dp[i-1][1])
      dp[i][1].max=max(dp[i-1][0],dp[i-1][1])-a
    for idx in le[i]:
      #echo lrp[idx]
      if lrp[idx][1]==n:
        dp[lrp[idx][1]+1][1].max=max(lrp[idx][2]+dp[i][1],lrp[idx][2]+dp[i][0]-a)
      else:
        dp[lrp[idx][1]+1][1].max=max(lrp[idx][2]+dp[i][1],lrp[idx][2]+dp[i][0]-a)-a
    #echo dp.join("\n")
    #echo "###"
  return dp[n+1].max()




proc solve():int=
  var
    (n,m,a)=(scan(),scan(),scan())
    lrp = newseqwith(m,(scan()-1,scan()-1,scan()))
    le = newseqwith(n+1,newseq[int]())
    re = newseqwith(n+1,newseq[int]())
    memo = initTable[(int,int,),int]()
  lrp = lrp.sorted()
  for idx,(l,r,p) in lrp:
    le[l].add(idx)
    re[r].add(idx)

  # l-1とlのあいだ、rとr+1の間に黒線が存在するケース
  proc recSolve(l,r:int):int=
    echo l,", ", r
    if memo.hasKey((l,r)):
      return memo[(l,r)]
    for idx in le[l]:
      if lrp[idx][1]==r:
        result.max=lrp[idx][2]
    #
    for m in l..<r:
      result.max=(-a)+(recSolve(l,m)+recSolve(m+1,r))
    memo[(l,r)]=result
  return recSolve(0,n-1)

  
echo solveDP()
0