結果
問題 | No.788 トラックの移動 |
ユーザー | 👑 hos.lyric |
提出日時 | 2019-02-23 10:33:01 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 1,272 ms / 2,000 ms |
コード長 | 2,921 bytes |
コンパイル時間 | 1,259 ms |
コンパイル使用メモリ | 138,424 KB |
実行使用メモリ | 7,040 KB |
最終ジャッジ日時 | 2024-06-13 04:13:33 |
合計ジャッジ時間 | 8,549 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 1,230 ms
6,820 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 287 ms
6,944 KB |
testcase_05 | AC | 1,197 ms
6,944 KB |
testcase_06 | AC | 1,229 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 1 ms
6,940 KB |
testcase_12 | AC | 1 ms
6,944 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 1 ms
6,940 KB |
testcase_15 | AC | 412 ms
6,944 KB |
testcase_16 | AC | 1,272 ms
7,040 KB |
ソースコード
import std.conv, std.functional, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } enum INF = 10L^^18; int N, M, L; long[] T; int[] A, B; long[] C; int[][] G; long[] distFrom(int src) { alias Node = Tuple!(long, int); auto q = BinaryHeap!(Array!Node, "a > b")(); auto d = new long[N]; d[] = INF; d[src] = 0; q.insert(Node(0, src)); for (; !q.empty; ) { const c = q.front[0]; const u = q.front[1]; q.removeFront; if (d[u] == c) { foreach (i; G[u]) { const v = A[i] ^ B[i] ^ u; const cc = c + C[i]; if (d[v] > cc) { d[v] = cc; q.insert(Node(cc, v)); } } } } return d; } void main() { try { for (; ; ) { N = readInt(); M = readInt(); L = readInt() - 1; T = new long[N]; foreach (u; 0 .. N) { T[u] = readLong(); } A = new int[M]; B = new int[M]; C = new long[M]; foreach (i; 0 .. M) { A[i] = readInt() - 1; B[i] = readInt() - 1; C[i] = readLong(); } G = new int[][N]; foreach (i; 0 .. M) { G[A[i]] ~= i; G[B[i]] ~= i; } const d0 = distFrom(L); long ans = INF; foreach (s; 0 .. N) { const d1 = distFrom(s); bool any; foreach (u; 0 .. N) { any = any || (u != s && T[u] > 0); } long cost; if (any) { foreach (u; 0 .. N) { cost += 2 * d1[u] * T[u]; } long lost = INF; foreach (u; 0 .. N) { if (T[u] > 0) { chmin(lost, d0[u] - d1[u]); } } cost += lost; } debug { writefln("s = %s: cost = %s", s, cost); } chmin(ans, cost); } writeln(ans); } } catch (EOFException e) { } }