結果
| 問題 |
No.2642 Don't cut line!
|
| コンテスト | |
| ユーザー |
 seekworser
|
| 提出日時 | 2024-02-20 19:06:50 |
| 言語 | Nim (2.2.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 17,121 bytes |
| コンパイル時間 | 5,566 ms |
| コンパイル使用メモリ | 95,000 KB |
| 実行使用メモリ | 42,720 KB |
| 最終ジャッジ日時 | 2024-09-29 03:50:36 |
| 合計ジャッジ時間 | 13,167 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge2 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 WA * 10 |
ソースコード
import macros;macro ImportExpand(s:untyped):untyped = parseStmt($s[2])
# {.checks: off.}
ImportExpand "cplib/tmpl/citrus.nim" <=== "when not declared CPLIB_TMPL_CITRUS:\n const CPLIB_TMPL_CITRUS* = 1\n {.warning[UnusedImport]: off.}\n {.hint[XDeclaredButNotUsed]: off.}\n import os\n import algorithm\n import sequtils\n import tables\n import macros\n import std/math\n import sets\n import strutils\n import strformat\n import sugar\n import streams\n import deques\n import bitops\n import heapqueue\n import options\n import hashes\n const MODINT998244353* = 998244353\n const MODINT1000000007* = 1000000007\n const INF* = 100100111\n const INFL* = int(3300300300300300491)\n type double* = float64\n let readNext = iterator(getsChar: bool = false): string {.closure.} =\n while true:\n var si: string\n try: si = stdin.readLine\n except EOFError: yield \"\"\n for s in si.split:\n if getsChar:\n for i in 0..<s.len():\n yield s[i..i]\n else:\n if s.isEmptyOrWhitespace: continue\n yield s\n proc input*(t: typedesc[string]): string = readNext()\n proc input*(t: typedesc[char]): char = readNext(true)[0]\n proc input*(t: typedesc[int]): int = readNext().parseInt\n proc input*(t: typedesc[float]): float = readNext().parseFloat\n macro input*(t: typedesc, n: varargs[int]): untyped =\n var repStr = \"\"\n for arg in n:\n repStr &= &\"({arg.repr}).newSeqWith \"\n parseExpr(&\"{repStr}input({t})\")\n macro input*(ts: varargs[auto]): untyped =\n var tupStr = \"\"\n for t in ts:\n tupStr &= &\"input({t.repr}),\"\n parseExpr(&\"({tupStr})\")\n macro input*(n: int, ts: varargs[auto]): untyped =\n for typ in ts:\n if typ.typeKind != ntyAnything:\n error(\"Expected typedesc, got \" & typ.repr, typ)\n parseExpr(&\"({n.repr}).newSeqWith input({ts.repr})\")\n proc `fmtprint`*(x: int or string or char or bool): string = return $x\n proc `fmtprint`*(x: float or float32 or float64): string = return &\"{x:.16f}\"\n proc `fmtprint`*[T](x: seq[T] or Deque[T] or HashSet[T] or set[T]): string = return x.toSeq.join(\" \")\n proc `fmtprint`*[T, N](x: array[T, N]): string = return x.toSeq.join(\" \")\n proc `fmtprint`*[T](x: HeapQueue[T]): string =\n var q = x\n while q.len != 0:\n result &= &\"{q.pop()}\"\n if q.len != 0: result &= \" \"\n proc `fmtprint`*[T](x: CountTable[T]): string =\n result = x.pairs.toSeq.mapIt(&\"{it[0]}: {it[1]}\").join(\" \")\n proc `fmtprint`*[K, V](x: Table[K, V]): string =\n result = x.pairs.toSeq.mapIt(&\"{it[0]}: {it[1]}\").join(\" \")\n proc print*(prop: tuple[f: File, sepc: string, endc: string, flush: bool], args: varargs[string, `fmtprint`]) =\n for i in 0..<len(args):\n prop.f.write(&\"{args[i]}\")\n if i != len(args) - 1: prop.f.write(prop.sepc) else: prop.f.write(prop.endc)\n if prop.flush: prop.f.flushFile()\n proc print*(args: varargs[string, `fmtprint`]) = print((f: stdout, sepc: \" \", endc: \"\\n\", flush: false), args)\n const LOCAL_DEBUG{.booldefine.} = false\n macro getSymbolName(x: typed): string = x.toStrLit\n macro debug*(args: varargs[untyped]): untyped =\n when LOCAL_DEBUG:\n result = newNimNode(nnkStmtList, args)\n template prop(e: string = \"\"): untyped = (f: stderr, sepc: \"\", endc: e, flush: true)\n for i, arg in args:\n if arg.kind == nnkStrLit:\n result.add(quote do: print(prop(), \"\\\"\", `arg`, \"\\\"\"))\n else:\n result.add(quote do: print(prop(\": \"), getSymbolName(`arg`)))\n result.add(quote do: print(prop(), `arg`))\n if i != args.len - 1: result.add(quote do: print(prop(), \", \"))\n else: result.add(quote do: print(prop(), \"\\n\"))\n else:\n return (quote do: discard)\n proc `%`*(x: SomeInteger, y: SomeInteger): int =\n result = x mod y\n if y > 0 and result < 0: result += y\n if y < 0 and result > 0: result += y\n proc `//`*(x: SomeInteger, y: SomeInteger): int =\n result = x div y\n if y > 0 and result * y > x: result -= 1\n if y < 0 and result * y < x: result -= 1\n proc `^`*(x: SomeInteger, y: SomeInteger): int = x xor y\n proc `&`*(x: SomeInteger, y: SomeInteger): int = x and y\n proc `|`*(x: SomeInteger, y: SomeInteger): int = x or y\n proc `>>`*(x: SomeInteger, y: SomeInteger): int = x shr y\n proc `<<`*(x: SomeInteger, y: SomeInteger): int = x shl y\n proc `%=`*(x: var SomeInteger, y: SomeInteger): void = x = x % y\n proc `//=`*(x: var SomeInteger, y: SomeInteger): void = x = x // y\n proc `^=`*(x: var SomeInteger, y: SomeInteger): void = x = x ^ y\n proc `&=`*(x: var SomeInteger, y: SomeInteger): void = x = x & y\n proc `|=`*(x: var SomeInteger, y: SomeInteger): void = x = x | y\n proc `>>=`*(x: var SomeInteger, y: SomeInteger): void = x = x >> y\n proc `<<=`*(x: var SomeInteger, y: SomeInteger): void = x = x << y\n proc `[]`*(x, n: int): bool = (x and (1 shl n)) != 0\n proc `[]=`*(x: var int, n: int, i: bool) =\n if i: x = x or (1 << n)\n else: (if x[n]: x = x xor (1 << n))\n proc pow*(a, n: int, m = INFL): int =\n var\n rev = 1\n a = a\n n = n\n while n > 0:\n if n % 2 != 0: rev = (rev * a) mod m\n if n > 1: a = (a * a) mod m\n n >>= 1\n return rev\n #[ include cplib/math/isqrt ]#\n when not declared CPLIB_MATH_ISQRT:\n const CPLIB_MATH_ISQRT* = 1\n proc isqrt*(n: int): int =\n var x = n\n var y = (x + 1) shr 1\n while y < x:\n x = y\n y = (x + n div x) shr 1\n return x\n proc chmax*[T](x: var T, y: T): bool {.discardable.} = (if x < y: (x = y; return true; ) return false)\n proc chmin*[T](x: var T, y: T): bool {.discardable.} = (if x > y: (x = y; return true; ) return false)\n proc `max=`*[T](x: var T, y: T) = x = max(x, y)\n proc `min=`*[T](x: var T, y: T) = x = min(x, y)\n proc at*(x: char, a = '0'): int = int(x) - int(a)\n converter tofloat*(n: int): float = float(n)\n proc Yes*(b: bool = true): void = print(if b: \"Yes\" else: \"No\")\n proc No*(b: bool = true): void = Yes(not b)\n proc YES_upper*(b: bool = true): void = print(if b: \"YES\" else: \"NO\")\n proc NO_upper*(b: bool = true): void = Yes_upper(not b)\n const DXY* = [(0, -1), (0, 1), (-1, 0), (1, 0)]\n const DDXY* = [(1, -1), (1, 0), (1, 1), (0, -1), (0, 1), (-1, -1), (-1, 0), (-1, 1)]\n macro exit*(statement: untyped): untyped = (quote do: (`statement`; quit()))\n"
ImportExpand "cplib/collections/segtree.nim" <=== "when not declared CPLIB_COLLECTIONS_SEGTREE:\n const CPLIB_COLLECTIONS_SEGTREE* = 1\n import algorithm\n type SegmentTree*[T] = ref object\n default: T\n merge: proc(x: T, y: T): T\n arr*: seq[T]\n lastnode: int\n length: int\n proc initSegmentTree*[T](v: seq[T], merge: proc(x: T, y: T): T, default: T): SegmentTree[T] =\n ## セグメントツリーを生成します。\n ## vに元となるリスト、mergeに二つの区間をマージする関数、デフォルトに単位元を与えてください。\n var lastnode = 1\n while lastnode < len(v):\n lastnode*=2\n var arr = newSeq[T](2*lastnode)\n arr.fill(default)\n var self = SegmentTree[T](default: default, merge: merge, arr: arr, lastnode: lastnode, length: len(v))\n #1-indexedで作成する\n for i in 0..<len(v):\n self.arr[self.lastnode+i] = v[i]\n for i in countdown(lastnode-1, 1):\n self.arr[i] = self.merge(self.arr[2*i], self.arr[2*i+1])\n return self\n\n proc update*[T](self: SegmentTree[T], x: Natural, val: T) =\n ## xの要素をvalに変更します。\n assert x < self.length\n var x = x\n x += self.lastnode\n self.arr[x] = val\n while x > 1:\n x = x shr 1\n self.arr[x] = self.merge(self.arr[2*x], self.arr[2*x+1])\n proc get*[T](self: SegmentTree[T], q_left: Natural, q_right: Natural): T =\n ## 半解区間[q_left,q_right)についての演算結果を返します。\n assert q_left <= q_right and 0 <= q_left and q_right <= self.length\n var q_left = q_left\n var q_right = q_right\n q_left += self.lastnode\n q_right += self.lastnode\n var (lres, rres) = (self.default, self.default)\n while q_left < q_right:\n if (q_left and 1) > 0:\n lres = self.merge(lres, self.arr[q_left])\n q_left += 1\n if (q_right and 1) > 0:\n q_right -= 1\n rres = self.merge(self.arr[q_right], rres)\n q_left = q_left shr 1\n q_right = q_right shr 1\n return self.merge(lres, rres)\n proc get*[T](self: SegmentTree[T], segment: HSlice[int, int]): T =\n assert segment.a <= segment.b + 1 and 0 <= segment.a and segment.b+1 <= self.length\n return self.get(segment.a, segment.b+1)\n proc `[]`*[T](self: SegmentTree[T], index: Natural): T =\n assert index < self.length\n return self.arr[index+self.lastnode]\n proc `[]=`*[T](self: SegmentTree[T], index: Natural, val: T) =\n assert index < self.length\n self.update(index, val)\n proc get_all*[T](self: SegmentTree[T]): T =\n ## [0,len(self))区間の演算結果をO(1)で返す\n return self.arr[1]\n proc len*[T](self: SegmentTree[T]): int =\n return self.length\n\n template newSegWith*(V, merge, default: untyped): untyped =\n initSegmentTree(V, (l, r{.inject.}: typeof(default)) => merge, default)\n\n"
ImportExpand "cplib/collections/unionfind.nim" <=== "when not declared CPLIB_COLLECTIONS_UNIONFIND:\n const CPLIB_COLLECTIONS_UNIONFIND* = 1\n import algorithm\n import sequtils\n type UnionFind = ref object\n count*: int\n par_or_siz: seq[int]\n proc initUnionFind*(N: int): UnionFind =\n result = UnionFind(count: N, par_or_siz: newSeqwith(N, -1))\n proc root*(self: UnionFind, x: int): int =\n if self.par_or_siz[x] < 0:\n return x\n else:\n self.par_or_siz[x] = self.root(self.par_or_siz[x])\n return self.par_or_siz[x]\n proc issame*(self: UnionFind, x: int, y: int): bool =\n return self.root(x) == self.root(y)\n proc unite*(self: UnionFind, x: int, y: int) =\n var x = self.root(x)\n var y = self.root(y)\n if(x != y):\n if(self.par_or_siz[x] > self.par_or_siz[y]):\n swap(x, y)\n self.par_or_siz[x] += self.par_or_siz[y]\n self.par_or_siz[y] = x\n self.count -= 1\n proc siz*(self: UnionFind, x: int): int =\n var x = self.root(x)\n return -self.par_or_siz[x]\n"
# https://atcoder.jp/contests/abc337/submissions/50216964
# ↑上記の提出より引用
type HeavyLightDecomposition = ref object
N: int
P: seq[int]
PP: seq[int]
PD: seq[int]
D: seq[int]
I: seq[int]
rangeL: seq[int]
rangeR: seq[int]
proc initHld(hld: HeavyLightDecomposition, adj: seq[seq[int]], root: int) =
var n: int = len(adj)
hld.N = n
hld.P = newSeqWith(n, -1)
hld.I = newSeqWith(n, 0)
hld.I[0] = root
var iI: int = 1
for i in 0..<n:
var p = hld.I[i]
for e in adj[p]:
if hld.P[p] != e:
hld.I[iI] = e
hld.P[e] = p
iI += 1
var Z = newSeqWith(n, 1)
var nx = newSeqWith(n, -1)
hld.PP = newSeqWith(n, 0)
for i in 0..<n:
hld.PP[i] = i
for i in 1..<n:
var p = hld.I[n-i]
Z[hld.P[p]] += Z[p]
if nx[hld.P[p]] == -1 or Z[nx[hld.P[p]]] < Z[p]:
nx[hld.P[p]] = p
for p in hld.I:
if nx[p] != -1:
hld.PP[nx[p]] = p
hld.PD = newSeqWith(n, n)
hld.PD[root] = 0
hld.D = newSeqWith(n, 0)
for p in hld.I:
if p != root:
hld.PP[p] = hld.PP[hld.PP[p]]
hld.PD[p] = min(hld.PD[hld.PP[p]], hld.PD[hld.P[p]]+1)
hld.D[p] = hld.D[hld.P[p]]+1
hld.rangeL = newSeqWith(n, 0)
hld.rangeR = newSeqWith(n, 0)
for p in hld.I:
hld.rangeR[p] = hld.rangeL[p] + Z[p]
var ir = hld.rangeR[p]
for e in adj[p]:
if hld.P[p] != e and e != nx[p]:
ir -= Z[e]
hld.rangeL[e] = ir
if nx[p] != -1:
hld.rangeL[nx[p]] = hld.rangeL[p] + 1
for i in 0..<n:
hld.I[hld.rangeL[i]] = i
proc numVertices(hld: HeavyLightDecomposition): int = hld.N
proc depth(hld: HeavyLightDecomposition, p: int): int = hld.D[p]
proc toSeq(hld: HeavyLightDecomposition, vtx: int): int = hld.rangeL[vtx]
proc toVtx(hld: HeavyLightDecomposition, seqidx: int): int = hld.I[seqidx]
proc toSeq2In(hld: HeavyLightDecomposition, vtx: int): int = hld.rangeL[vtx] * 2 - hld.D[vtx]
proc toSeq2Out(hld: HeavyLightDecomposition, vtx: int): int = hld.rangeR[vtx] * 2 - hld.D[vtx] - 1
proc parentOf(hld: HeavyLightDecomposition, v: int): int = hld.P[v]
proc heavyRootOf(hld: HeavyLightDecomposition, v: int): int = hld.PP[v]
proc heavyChildOf(hld: HeavyLightDecomposition, v: int): int =
if hld.toSeq(v) == hld.N-1:
return -1
var cand = hld.toVtx(hld.toSeq(v) + 1)
if hld.PP[v] == hld.PP[cand]:
return cand
-1
proc lca(hld: HeavyLightDecomposition, u: int, v: int): int =
var (u, v) = (u, v)
if hld.PD[u] < hld.PD[v]:
swap(u, v)
while hld.PD[u] > hld.PD[v]:
u = hld.P[hld.PP[u]]
while hld.PP[u] != hld.PP[v]:
u = hld.P[hld.PP[u]]
v = hld.P[hld.PP[v]]
if hld.D[u] > hld.D[v]:
return v
u
proc dist(hld: HeavyLightDecomposition, u: int, v: int): int =
hld.depth(u) + hld.depth(v) - hld.depth(hld.lca(u, v)) * 2
proc path(hld: HeavyLightDecomposition, r: int, c: int, include_root: bool, reverse_path: bool): seq[(int, int)] =
var (r, c) = (r, c)
var k = hld.PD[c] - hld.PD[r] + 1
if k <= 0:
return @[]
var res = newSeqWith(k, (0, 0))
for i in 0..<k-1:
res[i] = (hld.rangeL[hld.PP[c]], hld.rangeL[c] + 1)
c = hld.P[hld.PP[c]]
if hld.PP[r] != hld.PP[c] or hld.D[r] > hld.D[c]:
return @[]
var root_off: int = 0
if include_root:
root_off = 1
res[^1] = (hld.rangeL[r]+root_off, hld.rangeL[c]+1)
if res[^1][0] == res[^1][1]:
discard res.pop()
k -= 1
if reverse_path:
for i in 0..<k:
res[i] = (hld.N - res[i][1], hld.N - res[i][0])
else:
res.reverse()
res
proc subtree(hld: HeavyLightDecomposition, p: int): (int, int) = (hld.rangeL[p], hld.rangeR[p])
proc median(hld: HeavyLightDecomposition, x: int, y: int, z: int): int =
hld.lca(x, y) xor hld.lca(y, z) xor hld.lca(x, z)
proc la(hld: HeavyLightDecomposition, starting: int, goal: int, d: int): int =
var (u, v, d) = (starting, goal, d)
if d < 0:
return -1
var g = hld.lca(u, v)
var dist0 = hld.D[u] - hld.D[g]*2 + hld.D[v]
if dist0 < d:
return -1
var p = u
if hld.D[u] - hld.D[g] < d:
p = v
d = dist0 - d
while hld.D[p] - hld.D[hld.PP[p]] < d:
d -= hld.D[p] - hld.D[hld.PP[p]] + 1
p = hld.P[hld.PP[p]]
hld.I[hld.rangeL[p] - d]
iterator children(hld: HeavyLightDecomposition, v: int): int =
var s = hld.rangeL[v] + 1
while s < hld.rangeR[v]:
var w = hld.toVtx(s)
yield w
s += hld.rangeR[w] - hld.rangeL[w]
#引用 ここまで
var n, m, c = input(int)
var g = newSeqWith(n, newSeq[int](0))
var uf = initUnionFind(n)
var ans = 0
var wpuv = newSeq[(int, int, int, int)](0)
for i in 0..<m:
var u, v = input(int) - 1
var w, p = input(int)
wpuv.add((w, p, u, v))
wpuv.sort
var e = initTable[(int, int), int]()
for (w, p, u, v) in wpuv:
if uf.issame(u, v): continue
ans.max = p
c -= w
uf.unite(u, v)
g[u].add(v)
g[v].add(u)
e[(u, v)] = w
e[(v, u)] = w
if uf.count != 1 or c < 0: exit(print(-1))
var hld = new HeavyLightDecomposition
hld.initHld(g, 0)
var v = (0..<n).toSeq.mapIt(if hld.P[hld.toSeq(it)] == -1: -INFL else: e[(hld.P[hld.toSeq(it)], hld.toSeq(it))])
var seg = newSegWith(v, max(l, r), -INFL)
for (w, p, u, v) in wpuv:
var mn = -INFL
for (l, r) in hld.path(hld.lca(u, v), u, true, false): mn.max = seg.get(l, r)
for (l, r) in hld.path(hld.lca(u, v), v, true, false): mn.max = seg.get(l, r)
if c + mn - w >= 0: ans.max = p
print(ans)