結果

問題 No.1 道のショートカット
コンテスト
ユーザー te-sh
提出日時 2020-01-21 00:05:22
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 47 ms / 5,000 ms
コード長 3,848 bytes
コンパイル時間 1,497 ms
コンパイル使用メモリ 173,016 KB
実行使用メモリ 11,240 KB
最終ジャッジ日時 2024-06-22 04:21:38
合計ジャッジ時間 3,053 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
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ファイルパターン 結果
sample AC * 4
other AC * 40
権限があれば一括ダウンロードができます

ソースコード

diff # 

// URL: https://yukicoder.me/problems/no/1

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

version(unittest) {} else
void main()
{
  int N; io.getV(N);
  int C; io.getV(C);
  int V; io.getV(V);
  int[] S; io.getA(V, S); --S[];
  int[] T; io.getA(V, T); --T[];
  int[] Y; io.getA(V, Y);
  int[] M; io.getA(V, M);

  auto g = GraphW!int(N*(C+1));
  foreach (Si, Ti, Yi, Mi; lockstep(S, T, Y, M))
    foreach (c; 0..C-Yi+1)
      g.addEdge((C+1)*Si+c, (C+1)*Ti+c+Yi, Mi);

  auto r = g.dijkstra(0).dist[(N-1)*(C+1)..N*(C+1)].minElement;
  io.putB(r < g.inf, r, -1);
}

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)
{
  Graph g;
  alias g this;
  alias Node = g.Node, Wt = g.Wt, Edge = g.Edge;
  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, string delimiter = " ", string floatFormat = "%.10f")
{
  import std.conv, std.format, std.meta, std.traits;
  alias assignable = hasAssignableElements;

  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 getV(T...)(ref T v) { foreach (ref w; v) get(w); }
  auto getA(T)(size_t n, ref T v) if (assignable!T) { v = new T(n); foreach (ref w; v) get(w); }
  auto getC(T...)(size_t n, ref T v) if (allSatisfy!(assignable, 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 (assignable!T && assignable!(ElementType!T))
  {
    v = new T(r); foreach (ref w; v) getA(c, w);
  }

  auto putR(T)(T v)
  {
    auto w = v;
    while (!w.empty) { putA(w.front); w.popFront(); if (!w.empty) OUT.write(delimiter); }
  }
  auto putA(T)(T v)
  {
    static if (isInputRange!T && !isSomeString!T) putR(v);
    else if (isFloatingPoint!T) OUT.write(format(floatFormat, v));
    else OUT.write(v);
  }
  auto put(bool flush = false, T...)(T v)
  {
    foreach (i, w; v) { putA(w); if (i < v.length-1) OUT.write(delimiter); }
    OUT.writeln;
    static if (flush) OUT.flush();
  }

  auto putB(S, T)(bool c, S t, T f) { if (c) put(t); else put(f); }
  auto putRaw(T...)(T v) { OUT.write(v); OUT.writeln; }
}
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