結果
問題 | No.460 裏表ちわーわ |
ユーザー | むらため |
提出日時 | 2019-02-07 12:42:03 |
言語 | Nim (2.0.2) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,126 bytes |
コンパイル時間 | 3,014 ms |
コンパイル使用メモリ | 66,812 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-01 11:26:29 |
合計ジャッジ時間 | 3,895 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 2 ms
6,812 KB |
testcase_01 | AC | 1 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 1 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 1 ms
6,944 KB |
testcase_13 | WA | - |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | WA | - |
testcase_16 | AC | 1 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,944 KB |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | AC | 1 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 1 ms
6,944 KB |
testcase_27 | WA | - |
コンパイルメッセージ
/home/judge/data/code/Main.nim(1, 22) Warning: imported and not used: 'strutils' [UnusedImport]
ソースコード
import sequtils,math,strutils # template stopwatch(body) = (let t1 = cpuTime();body;stderr.writeLine "TIME:",(cpuTime() - t1) * 1000,"ms") # 行列 type Matrix[T] = ref object w,h:int data: seq[T] proc `[]`[T](m:Matrix[T],x,y:int):T = m.data[x + y * m.w] proc `[]`[T](m:var Matrix[T],x,y:int):var T = m.data[x + y * m.w] proc `[]=`[T](m:var Matrix[T],x,y:int,val:T) = m.data[x + y * m.w] = val proc newMatrix[T](w,h:int):Matrix[T] = new(result) result.w = w result.h = h result.data = newSeq[T](w * h) proc newMatrix[T](arr:seq[seq[T]]):Matrix[T] = new(result) result.w = arr[0].len result.h = arr.len result.data = newSeq[T](result.w * result.h) for x in 0..<result.w: for y in 0..<result.h: result[x,y] = arr[y][x] proc `$`[T](m:Matrix[T]) : string = result = "" for y in 0..<m.h: result &= "[" for x in 0..<m.w: result &= $m[x,y] if x != m.w - 1 : result &= "," result &= "]" if y != m.h - 1 : result &= "\n" result &= "\n" template mapIt[T](M: Matrix[T],op): untyped = type outType = type((var it{.inject.}: T;op)) var i = 0 var result = newMatrix[outType](M.w,M.h) for y in 0..<M.h: for x in 0..<M.w: let it {.inject.} = M[x,y] result[x,y] = op result proc gaussianElimination(A:Matrix[bool],x:seq[bool]):seq[bool] = let n = x.len template `^=`(x,y) = x = x xor y assert n == A.w and n == A.h result = x var A = A for i in 0..<n: if not A[i,i]: var ok = false for j in (i+1)..<n: if not A[i,j] : continue for k in i..<n: swap(A[k,i],A[k,j]) swap(result[i],result[j]) ok = true break if not ok : if result[i] and toSeq(0..<n).allIt(not A[it,i]) : return @[] continue for j in (i+1)..<n: if not A[i,j]: continue for k in i..<n: A[k,j] ^= A[k,i] result[j] ^= result[i] for i in (n-1).countdown(0): if A[i,i]: for j in 0..<i: if not A[i,j] : continue A[i,j] = false result[j] ^= result[i] else: result[i] = false for j in 0..<i: if not A[i,j] : continue A[i,j] = false for i in 0..<n: if not A[i,i] and result[i] : return @[] proc getchar_unlocked():char {. discardable,importc:"getchar_unlocked",header: "<stdio.h>" .} proc scan(): int = while true: let k = getchar_unlocked() if k < '0': return result = 10 * result + k.ord - '0'.ord let h = scan() let w = scan() proc encode(x,y:int):int = x * h + y let M = (proc ():Matrix[bool] = result = newMatrix[bool](w*h,w*h) const dxdy9 :seq[tuple[x,y:int]] = @[(0,1),(1,0),(0,-1),(-1,0),(1,1),(1,-1),(-1,-1),(-1,1),(0,0)] for x in 0..<w: for y in 0..<h: for d in dxdy9: let nx = x + d.x let ny = y + d.y if nx < 0 or ny < 0 or nx >= w or ny >= h : continue result[encode(x,y),encode(nx,ny)] = true )() var C = newSeq[bool](w*h) for y in 0..<h: for x in 0..<w: C[encode(x,y)] = getchar_unlocked() == '1' getchar_unlocked() let A = M.gaussianElimination(C) if A.len == 0 : echo "Impossible" else: echo A.mapIt(it.int).sum()