結果
問題 | No.119 旅行のツアーの問題 |
ユーザー | 👑 hos.lyric |
提出日時 | 2015-02-18 05:52:58 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 3 ms / 5,000 ms |
コード長 | 3,749 bytes |
コンパイル時間 | 1,013 ms |
コンパイル使用メモリ | 124,544 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-12 02:23:26 |
合計ジャッジ時間 | 1,790 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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 1 ms
5,376 KB |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 3 ms
5,376 KB |
ソースコード
import core.thread; import std.conv, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.container, std.math, std.range, std.regex; // Input class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { tokens = readln.split; if (tokens.empty && stdin.eof) throw new EOFException; } auto token = tokens[0]; tokens.popFront; return token; } int readInt() { return to!int(readToken); } long readLong() { return to!long(readToken); } real readReal() { return to!real(readToken); } // chmin/chmax void chmin(T)(ref T t, in T f) { if (t > f) t = f; } void chmax(T)(ref T t, in T f) { if (t < f) t = f; } // Pair struct Pair(S, T) { S x; T y; int opCmp( const Pair p) const { return (x < p.x) ? -1 : (x > p.x) ? +1 : (y < p.y) ? -1 : (y > p.y) ? +1 : 0; } int opCmp(ref const Pair p) const { return (x < p.x) ? -1 : (x > p.x) ? +1 : (y < p.y) ? -1 : (y > p.y) ? +1 : 0; } string toString() const { return "(" ~ to!string(x) ~ ", " ~ to!string(y) ~ ")"; } } auto pair(S, T)(inout(S) x, inout(T) y) { return Pair!(S, T)(x, y); } // Array int binarySearch(T)(in T[] as, in bool delegate(T) test) { int low = -1, upp = as.length; for (; low + 1 < upp; ) { int mid = (low + upp) >> 1; (test(as[mid]) ? low : upp) = mid; } return upp; } int lowerBound(T)(in T[] as, in T val) { return as.binarySearch((T a) { return (a < val); }); } int upperBound(T)(in T[] as, in T val) { return as.binarySearch((T a) { return (a <= val); }); } T[] unique(T)(in T[] as) { T[] bs; foreach (a; as) if (bs.empty || bs[$ - 1] != a) bs ~= a; return bs; } class MaxFlow(CAPA) { static immutable CAPA wEPS = 0; static immutable CAPA wINF = 1001001001; int n, m; int[][] g; int[] zu; CAPA[] capa; CAPA tof; int[] lev, see, que; this (int n) { this.n = n; m = 0; g = new int[][n]; zu = null; capa = null; lev = new int[n]; see = new int[n]; que = new int[n]; } void ae(int u, int v, CAPA w0, CAPA w1 = 0) { g[u] ~= m; zu ~= v; capa ~= w0; ++m; g[v] ~= m; zu ~= u; capa ~= w1; ++m; } CAPA augment(int src, int ink, CAPA flo) { if (src == ink) return flo; foreach (i; g[src][see[src] .. $]) { if (capa[i] > wEPS && lev[src] < lev[zu[i]]) { CAPA f = augment(zu[i], ink, min(flo, capa[i])); if (f > wEPS) { capa[i] -= f; capa[i ^ 1] += f; return f; } } ++see[src]; } return 0; } bool dinic(int src, int ink, CAPA flo = wINF) { for (tof = 0; tof + wEPS < flo; ) { int[] q; lev[] = -1; dinicBFS: for (lev[src] = 0, q ~= src; !q.empty; ) { int u = q.front; q.popFront; foreach (i; g[u]) { int v = zu[i]; if (capa[i] > wEPS && lev[v] == -1) { lev[v] = lev[u] + 1; q ~= v; if (v == ink) break dinicBFS; } } } if (lev[ink] == -1) return false; see[] = 0; for (; ; ) { CAPA f = augment(src, ink, flo - tof); if (f <= wEPS) break; tof += f; } } return true; } } int N; int[] B, C; int M; int[] D, E; void main(string[] args) { try { for (; ; ) { N = readInt; B = new int[N]; C = new int[N]; foreach (u; 0 .. N) { B[u] = readInt; C[u] = readInt; } M = readInt; D = new int[M]; E = new int[M]; foreach (i; 0 .. M) { D[i] = readInt; E[i] = readInt; } int ans; ans += B.reduce!((a, b) => a + b); ans += C.reduce!((a, b) => a + b); auto mf = new MaxFlow!(int)(2 + N * 2); int L(int u) { return 2 + u * 2 + 0; } int R(int u) { return 2 + u * 2 + 1; } foreach (u; 0 .. N) { mf.ae(0, L(u), B[u]); mf.ae(L(u), R(u), mf.wINF); mf.ae(R(u), 1, C[u]); } foreach (i; 0 .. M) { mf.ae(L(D[i]), R(E[i]), mf.wINF); } mf.dinic(0, 1); ans -= mf.tof; writeln(ans); } } catch (EOFException) {} }