#431415 (D) No.20 砂漠のオアシス

提出ソース

結果

問題	No.20 砂漠のオアシス
ユーザー	te-sh
提出日時	2020-02-18 16:24:16
言語	D (dmd 2.106.1)
結果	AC
実行時間	78 ms / 5,000 ms
コード長	7,075 bytes
コンパイル時間	1,005 ms
コンパイル使用メモリ	127,396 KB
実行使用メモリ	12,836 KB
最終ジャッジ日時	2024-06-22 05:16:16
合計ジャッジ時間	1,896 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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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 ms 6,816 KB
testcase_01	AC	1 ms 6,940 KB
testcase_02	AC	1 ms 6,940 KB
testcase_03	AC	4 ms 6,944 KB
testcase_04	AC	5 ms 6,940 KB
testcase_05	AC	62 ms 11,752 KB
testcase_06	AC	78 ms 12,836 KB
testcase_07	AC	77 ms 11,860 KB
testcase_08	AC	74 ms 12,820 KB
testcase_09	AC	74 ms 12,688 KB
testcase_10	AC	1 ms 6,940 KB
testcase_11	AC	1 ms 6,944 KB
testcase_12	AC	4 ms 6,940 KB
testcase_13	AC	5 ms 6,944 KB
testcase_14	AC	7 ms 6,944 KB
testcase_15	AC	6 ms 6,944 KB
testcase_16	AC	15 ms 6,940 KB
testcase_17	AC	12 ms 6,940 KB
testcase_18	AC	13 ms 6,940 KB
testcase_19	AC	15 ms 6,944 KB
testcase_20	AC	3 ms 6,944 KB

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

Main.d(215): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{exit: true}", string).put.putMain!(c, string).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-203(203):        instantiated from here: `putMain!(c, string)`
Main.d(18):        instantiated from here: `put!("{exit: true}", string)`
Main.d(215): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{}", string).put.putMain!(c, string).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-203(203):        instantiated from here: `putMain!(c, string)`
Main.d(25):        instantiated from here: `put!("{}", string)`

ソースコード

raw source code

// URL: https://yukicoder.me/problems/no/20

import std.algorithm, std.array, std.container, std.math, std.range, std.typecons, std.string;

version(unittest) {} else
void main()
{
  int N, V, Ox, Oy; io.getV(N, V, Ox, Oy); --Ox; --Oy;
  int[][] L; io.getM(N, N, L);

  alias rg = Region!(N, N), Pos = rg.Pos;
  auto a = rg.grid(L), g = GraphW!int(N*N);
  foreach (p; a.walk)
    foreach (np; p.around4)
      g.addEdge(p.p2i, np.p2i, a[np]);

  auto d1 = g.dijkstra(Pos(0, 0).p2i).dist;
  if (V - d1[Pos(N-1, N-1).p2i] > 0) io.put!"{exit: true}"("YES");

  if (Ox >= 0 && Oy >= 0) {
    auto d2 = g.dijkstra(Pos(Oy, Ox).p2i).dist;
    if ((V - d1[Pos(Oy, Ox).p2i])*2 - d2[Pos(N-1, N-1).p2i] > 0) io.put!"{exit: true}"("YES");
  }

  io.put("NO");
}

template Region(alias h, alias w)
{
  struct Pos
  {
    int r, c;
    pure this(int r, int c) { this.r = r; this.c = c; }
    pure bool inRegion() { return 0 <= r && r < h && 0 <= c && c < w; }
    pure int p2i() { return cast(int)w*r+c; }

    pure Pos opBinary(string op)(Pos q) if (op=="+"||op=="-")
    { return mixin("Pos(r"~op~"q.r, c"~op~"q.c)"); }
    Pos opOpAssign(string op)(Pos q) if (op=="+"||op=="-")
    { mixin("r"~op~"=q.r; c"~op~"=q.c;"); return this; }
    pure Pos opBinary(string op, U)(U a) if (op=="*"||op=="/")
    { return mixin("Pos(r"~op~"a, c"~op~"a)"); }
    Pos opOpAssign(string op, U)(U a) if (op=="*"||op=="/")
    { mixin("r"~op~"=a; c"~op~"=a;"); return this; }
    pure int opBinary(string op: "*")(Pos q)
    { return r*q.r+c*q.c; }

    pure auto around4()
    {
      return [Pos(r-1, c), Pos(r, c+1), Pos(r+1, c), Pos(r, c-1)]
        .filter!(p => p.inRegion);
    }
    pure auto around8()
    {
      return [Pos(r-1, c), Pos(r-1, c+1), Pos(r, c+1), Pos(r+1, c+1),
              Pos(r+1, c), Pos(r+1, c-1), Pos(r, c-1), Pos(r-1, c-1)]
        .filter!(p => p.inRegion);
    }
  }

  struct Grid(T)
  {
    T[][] data;
    pure this(T[][] data) { this.data = data; }
    pure Grid!T dup() { return Grid!T(data.map!"a.dup".array); }

    pure T opIndex(size_t r, size_t c) { return data[r][c]; }
    pure T opIndex(Pos p) { return data[p.r][p.c]; }
    Grid!T opIndexAssign(T v, size_t r, size_t c) { data[r][c] = v; return this; }
    Grid!T opIndexAssign(T v, Pos p) { data[p.r][p.c] = v; return this; }
    Grid!T opIndexOpAssign(string op)(T v, size_t r, size_t c)
    { mixin("data[r][c]"~op~"=v;"); return this; }
    Grid!T opIndexOpAssign(string op)(T v, Pos p)
    { mixin("data[p.r][p.c]"~op~"=v;"); return this; }
    Grid!T opIndexUnary(string op)(size_t r, size_t c) if (op=="++"||op=="--")
      { mixin(op~"data[r][c];"); return this; }
    Grid!T opIndexUnary(string op)(Pos p) if (op=="++"||op=="--")
      { mixin(op~"data[p.r][p.c];"); return this; }

    auto walk() { return WalkRange(this); }

    private struct WalkRange
    {
      int r, c;
      this(Grid!T g) { r = 0; c = 0; }
      @property pure Pos front() { return Pos(r, c); }
      void popFront() { if (++c >= w) { c = 0; ++r; } }
      pure bool empty() { return r >= h; }
    }
  }

  pure Pos pos(int r, int c) { return Pos(r, c); }
  pure Grid!T grid(T)(T[][] data = new T[][](h, w)) { return Grid!T(data); }
}

struct Graph
{
  alias Node = int;
  Node n;
  Node[][] g;
  alias g this;
  this(Node n) { this.n = n; g = new Node[][](n); }
  void addEdge(Node u, Node v) { g[u] ~= v; }
  void addEdgeB(Node u, Node v) { g[u] ~= v; g[v] ~= u; }
}

struct GraphW(W = int, W i = 10^^9)
{
  alias Node = int, Wt = W, inf = i;
  struct Edge { Node src, dst; Wt wt; alias cap = wt; }
  Node n;
  Edge[][] g;
  alias g this;
  this(Node n) { this.n = n; g = new Edge[][](n); }
  void addEdge(Node u, Node v, Wt w) { g[u] ~= Edge(u, v, w); }
  void addEdgeB(Node u, Node v, Wt w) { g[u] ~= Edge(u, v, w); g[v] ~= Edge(v, u, w); }
}

struct GraphM(W = int, W i = 10^^9)
{
  alias Node = int, Wt = W, inf = i;
  Node n;
  Wt[][] g;
  alias g this;
  this(int n) { this.n = n; g = new Wt[][](n, n); }
  static GraphM!(W, i) init(Node n)
  {
    auto g = GraphM!(W, i)(n);
    foreach (i; 0..n) { g[i][] = inf; g[i][i] = 0; }
    return g;
  }
}

struct Dijkstra(Graph)
{
  alias Node = Graph.Node, Wt = Graph.Wt, Edge = Graph.Edge;
  Graph g;
  alias g this;
  Wt[] dist;
  Node[] prev;

  this(Graph g, Node s)
  {
    this.g = g;
    auto sent = n;

    dist = new Wt[](n);
    dist[] = g.inf;
    dist[s] = 0;

    prev = new Node[](n);
    prev[] = sent;

    auto q = heapify!("a.wt>b.wt")(Array!Edge(Edge(sent, s, 0)));
    while (!q.empty) {
      auto e = q.front; q.removeFront();
      if (prev[e.dst] != sent) continue;
      prev[e.dst] = e.src;
      foreach (f; g[e.dst]) {
        auto w = e.wt+f.wt;
        if (dist[f.dst] > w) {
          dist[f.dst] = w;
          q.insert(Edge(f.src, f.dst, w));
        }
      }
    }
  }
}
Dijkstra!Graph dijkstra(Graph, Node)(Graph g, Node s)
{ return Dijkstra!Graph(g, s); }

auto io = IO!()();
import std.stdio;
struct IO(alias IN = stdin, alias OUT = stdout)
{
  import std.conv, std.format, std.meta, std.traits, core.stdc.stdlib;

  auto getV(T...)(ref T v) { foreach (ref w; v) get(w); }
  auto getA(T)(size_t n, ref T v) if (hasAssignableElements!T)
  { v = new T(n); foreach (ref w; v) get(w); }
  auto getC(T...)(size_t n, ref T v)
  if (allSatisfy!(hasAssignableElements, T))
  {
    foreach (ref w; v) w = new typeof(w)(n);
    foreach (i; 0..n) foreach (ref w; v) get(w[i]);
  }
  auto getM(T)(size_t r, size_t c, ref T v)
  if (hasAssignableElements!T && hasAssignableElements!(ElementType!T))
  { v = new T(r); foreach (ref w; v) getA(c, w); }
  template getS(E...)
  {
    auto getS(T)(size_t n, ref T v)
    { v = new T(n); foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");"); }
  }

  const struct PutConf
  {
    bool newline = true, flush, exit;
    string floatFormat = "%.10f", delimiter = " ";
  }

  auto put(alias conf = "{}", T...)(T v)
  { mixin("const PutConf c = "~conf~"; putMain!c(v);"); }
  auto putB(alias conf = "{}", S, T)(bool c, S t, T f)
  { if (c) put!conf(t); else put!conf(f); }
  auto putRaw(T...)(T v) { OUT.write(v); OUT.writeln; }

  private
  {
    dchar[] buf;
    auto sp = (new dchar[](0)).splitter;
    void nextLine() { IN.readln(buf); sp = buf.splitter; }
    auto get(T)(ref T v) { if (sp.empty) nextLine(); v = sp.front.to!T; sp.popFront(); }

    auto putMain(PutConf c, T...)(T v)
    {
      foreach (i, w; v) {
        putOne!c(w);
        if (i < v.length-1) OUT.write(c.delimiter);
      }
      static if (c.newline) OUT.writeln;
      static if (c.flush) OUT.flush();
      static if (c.exit) exit(0);
    }
    auto putOne(PutConf c, T)(T v)
    {
      static if (isInputRange!T && !isSomeString!T) putRange!c(v);
      else static if (isFloatingPoint!T) OUT.write(format(c.floatFormat, v));
      else static if (hasMember!(T, "fprint")) v.fprint(OUT);
      else OUT.write(v);
    }
    auto putRange(PutConf c, T)(T v)
    {
      auto w = v;
      while (!w.empty) {
        putOne!c(w.front); w.popFront();
        if (!w.empty) OUT.write(c.delimiter);
      }
    }
  }
}