結果
問題 | No.654 Air E869120 |
ユーザー |
|
提出日時 | 2018-02-23 23:43:27 |
言語 | D (dmd 2.109.1) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,690 bytes |
コンパイル時間 | 868 ms |
コンパイル使用メモリ | 131,528 KB |
実行使用メモリ | 10,380 KB |
最終ジャッジ日時 | 2024-06-12 23:55:26 |
合計ジャッジ時間 | 3,807 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 31 WA * 4 |
ソースコード
import std.stdio, std.array, std.string, std.conv, std.algorithm;import std.typecons, std.range, std.random, std.math, std.container;import std.numeric, std.bigint, core.bitop, std.bitmanip;alias Plane = Tuple!(int, "u", int, "v", int, "p", int, "q", int, "w");immutable long INF = 1L << 59;void main() {auto s = readln.split.map!(to!int);auto N = s[0];auto M = s[1];auto D = s[2];auto P = new Plane[](M);foreach (i; 0..M) {s = readln.split.map!(to!int);P[i] = Plane(s[0], s[1], s[2], s[3], s[4]);}int source = M;int sink = M + 1;auto dinic = new Dinic(M + 2);foreach (i; 0..M) {if (P[i].u == 1) {dinic.add_edge(source, i, P[i].w);}if (P[i].v == N) {dinic.add_edge(i, sink, P[i].w);}}foreach (i; 0..M) {foreach (j; 0..M) {if (i == j) continue;if (P[i].v == P[j].u && P[j].p - P[i].q >= D) {dinic.add_edge(i, j, P[i].w);}}}dinic.run(source, sink).writeln;}class Dinic {alias Edge = Tuple!(int, "to", long, "cap", long, "rev");int V;Edge[][] G;int[] itr, level;this(int V) {this.V = V;G = new Edge[][](V);}void add_edge(int from, int to, long cap) {G[from] ~= Edge(to, cap, G[to].length.to!long);G[to] ~= Edge(from, 0, G[from].length.to!long-1);}void bfs(int s) {level = new int[](V);level.fill(-1);DList!int q;level[s] = 0;q.insertBack(s);while (!q.empty) {int v = q.front();q.removeFront();foreach (e; G[v]){if (e.cap > 0 && level[e.to] < 0) {level[e.to] = level[v] + 1;q.insertBack(e.to);}}}}long dfs(int v, int t, long f) {if (v == t) return f;for (int i = itr[v]; i < G[v].length.to!int; ++i) {//auto e = G[v][i];if (G[v][i].cap > 0 && level[v] < level[G[v][i].to]) {long d = dfs(G[v][i].to, t, min(f, G[v][i].cap));if (d > 0) {G[v][i].cap -= d;G[G[v][i].to][G[v][i].rev].cap += d;return d;}}}return 0;}long run(int s, int t) {long ret = 0, f;while (true) {bfs(s);if (level[t] < 0) break;itr = new int[](V);while ((f = dfs(s, t, INF)) > 0) ret += f;}return ret;}}