結果

問題 No.1254 補強への架け橋
ユーザー dot_haraai
提出日時 2021-06-05 20:16:13
言語 Nim
(2.2.0)
結果
WA  
実行時間 -
コード長 1,608 bytes
コンパイル時間 6,196 ms
コンパイル使用メモリ 88,704 KB
実行使用メモリ 38,912 KB
最終ジャッジ日時 2024-11-21 19:02:58
合計ジャッジ時間 21,339 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
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 * 3
other AC * 15 WA * 108
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(1, 41) Warning: imported and not used: 'algorithm' [UnusedImport]
/home/judge/data/code/Main.nim(1, 52) Warning: imported and not used: 'tables' [UnusedImport]
/home/judge/data/code/Main.nim(2, 8) Warning: imported and not used: 'critbits' [UnusedImport]
/home/judge/data/code/Main.nim(1, 66) Warning: imported and not used: 'lists' [UnusedImport]
/home/judge/data/code/Main.nim(1, 73) Warning: imported and not used: 'intsets' [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 solve()=
  var
    n = scan()
    es = newseqwith(n,newseq[int]())
    
    loopE = newseqwith(n,newseq[bool]())
    invE = newseqwith(n,newseq[int]())
    ids = newseqwith(n,newseq[int]())
    touch = newseqwith(n,false)
  for i in 0..<n:
    var
      a = scan()-1
      b = scan()-1
    es[a].add(b)
    loopE[a].add(false)
    ids[a].add(i+1)
    es[b].add(a)
    loopE[b].add(false)
    ids[b].add(i+1)
    invE[a].add(es[b].len-1)
    invE[b].add(es[a].len-1)
  proc dfs(par:int,p:int):bool=
    if touch[p]:
      return true
    touch[p]=true
    for nIdx in 0..<es[p].len:
      var nxt = es[p][nIdx]
      if nxt == par:continue
      else:
        if dfs(p,nxt):
          loopE[p][nIdx]=true
          loopE[nxt][invE[p][nIdx]]=true
          result = result or true
  discard dfs(-1,0)
  #echo es.join("\n")
  #echo ids.join("\n")
  #echo loopE.join("\n")
  var ans = inithashset[int]()
  for p in 0..<n:
    for nIdx in 0..<es[p].len:
      if loopE[p][nIdx]:
        ans.incl(ids[p][nIdx])
  echo ans.len
  echo ans.toseq.join(" ")

  
      
     
solve()
0