結果
問題 | No.34 砂漠の行商人 |
ユーザー | te-sh |
提出日時 | 2016-09-02 11:48:03 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 17 ms / 5,000 ms |
コード長 | 2,429 bytes |
コンパイル時間 | 1,082 ms |
コンパイル使用メモリ | 135,160 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-12 04:07:47 |
合計ジャッジ時間 | 2,176 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 | 1 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 4 ms
5,376 KB |
testcase_05 | AC | 5 ms
5,376 KB |
testcase_06 | AC | 3 ms
5,376 KB |
testcase_07 | AC | 8 ms
5,376 KB |
testcase_08 | AC | 9 ms
5,376 KB |
testcase_09 | AC | 8 ms
5,376 KB |
testcase_10 | AC | 8 ms
5,376 KB |
testcase_11 | AC | 8 ms
5,376 KB |
testcase_12 | AC | 3 ms
5,376 KB |
testcase_13 | AC | 17 ms
5,376 KB |
testcase_14 | AC | 17 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 4 ms
5,376 KB |
testcase_17 | AC | 5 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 10 ms
5,376 KB |
testcase_20 | AC | 12 ms
5,376 KB |
testcase_21 | AC | 7 ms
5,376 KB |
testcase_22 | AC | 6 ms
5,376 KB |
testcase_23 | AC | 3 ms
5,376 KB |
testcase_24 | AC | 14 ms
5,376 KB |
testcase_25 | AC | 5 ms
5,376 KB |
ソースコード
import std.algorithm, std.array, std.container, std.range, std.bitmanip; import std.numeric, std.math, std.bigint, std.random; import std.string, std.conv, std.stdio, std.typecons; struct point { int x; int y; point opBinary(string op)(point rhs) { static if (op == "+") return point(x + rhs.x, y + rhs.y); else static if (op == "-") return point(x - rhs.x, y - rhs.y); } } const auto sibPoints = [point(-1, 0), point(0, -1), point(1, 0), point(0, 1)]; struct pointWeight { point p; int weight; int opCmp(pointWeight rhs) { return weight == rhs.weight ? 0 : (weight < rhs.weight ? -1 : 1); } } struct pointLen { point p; int len; } void main() { auto rd = readln.split.map!(to!int); auto n = rd[0], v = rd[1]; auto s = point(rd[2] - 1, rd[3] - 1), g = point(rd[4] - 1, rd[5] - 1); auto lij = iota(n).map!(_ => readln.split.map!(to!int).array).array; auto mij = dijkstra(n, lij, g); bool valid(point p) { return p.x >= 0 && p.x < n && p.y >= 0 && p.y < n; } auto cij = new int[][](n, n); cij.each!(a => a[] = -1); cij[s.y][s.x] = 0; auto minLen = -1; auto qi = DList!pointLen(pointLen(s, 0)); while (!qi.empty) { auto q = qi.front, p = q.p, l = q.len; qi.removeFront; if (p == g) { minLen = l; break; } foreach (sib; sibPoints) { auto np = p + sib; if (!valid(np)) continue; auto nw = cij[p.y][p.x] + lij[np.y][np.x]; if (nw >= v) continue; if (cij[np.y][np.x] < 0 || cij[np.y][np.x] > nw) { cij[np.y][np.x] = nw; qi.insertBack(pointLen(np, l + 1)); } } } writeln(minLen); } int[][] dijkstra(int n, int[][] lij, point s) { auto r = new int[][](n, n); r.each!((a) { a[] = -1; }); r[s.y][s.x] = 0; auto qi = heapify!("a > b")(Array!pointWeight()); void addPointWeight(pointWeight pw) { bool valid(point p) { return p.x >= 0 && p.x < n && p.y >= 0 && p.y < n; } auto p = pw.p, w = pw.weight; foreach (sib; sibPoints) { auto np = p + sib; if (!valid(np)) continue; auto nw = w + lij[np.y][np.x]; if (r[np.y][np.x] < 0 || nw < r[np.y][np.x]) { r[np.y][np.x] = nw; qi.insert(pointWeight(np, nw)); } } } addPointWeight(pointWeight(s, 0)); while (!qi.empty) { auto pw = qi.front, p = pw.p, w = pw.weight; qi.removeFront; addPointWeight(pw); } return r; }