結果
問題 | No.114 遠い未来 |
ユーザー | te-sh |
提出日時 | 2017-08-09 11:38:09 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 3,750 ms / 5,000 ms |
コード長 | 3,784 bytes |
コンパイル時間 | 4,055 ms |
コンパイル使用メモリ | 122,816 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-12 21:21:20 |
合計ジャッジ時間 | 16,594 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
(要ログイン)
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 | 173 ms
6,812 KB |
testcase_01 | AC | 1,340 ms
6,944 KB |
testcase_02 | AC | 287 ms
6,944 KB |
testcase_03 | AC | 53 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,944 KB |
testcase_05 | AC | 14 ms
6,940 KB |
testcase_06 | AC | 744 ms
6,940 KB |
testcase_07 | AC | 1 ms
6,944 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 24 ms
6,944 KB |
testcase_10 | AC | 1,038 ms
6,944 KB |
testcase_11 | AC | 3,750 ms
6,940 KB |
testcase_12 | AC | 1,551 ms
6,944 KB |
testcase_13 | AC | 2,295 ms
6,940 KB |
testcase_14 | AC | 778 ms
6,944 KB |
testcase_15 | AC | 1,172 ms
6,940 KB |
testcase_16 | AC | 347 ms
6,944 KB |
testcase_17 | AC | 324 ms
6,944 KB |
testcase_18 | AC | 353 ms
6,940 KB |
testcase_19 | AC | 180 ms
6,940 KB |
testcase_20 | AC | 57 ms
6,944 KB |
testcase_21 | AC | 11 ms
6,940 KB |
testcase_22 | AC | 12 ms
6,940 KB |
testcase_23 | AC | 1 ms
6,940 KB |
testcase_24 | AC | 2 ms
6,940 KB |
testcase_25 | AC | 1 ms
6,940 KB |
testcase_26 | AC | 1 ms
6,944 KB |
testcase_27 | AC | 1 ms
6,940 KB |
ソースコード
import std.algorithm, std.conv, std.range, std.stdio, std.string; alias Graph!(int, size_t) graph; void main() { auto rd1 = readln.split.to!(size_t[]), n = rd1[0], m = rd1[1], t = rd1[2]; auto e = new Edge[](m); foreach (i; 0..m) { auto rd2 = readln.splitter; auto src = rd2.front.to!size_t-1; rd2.popFront(); auto dst = rd2.front.to!size_t-1; rd2.popFront(); e[i] = Edge(src, dst, rd2.front.to!int); } auto v = t.iota.map!(_ => readln.chomp.to!size_t-1).array; v.sort(); auto calc1() { auto g = new int[][](n, n); foreach (ref r; g) r[] = graph.inf; foreach (i; 0..n) g[i][i] = 0; foreach (ref ei; e) g[ei.s][ei.t] = g[ei.t][ei.s] = ei.w; auto r = graph.minimumSteinerTree(v, g); return r >= graph.inf ? 0 : r; } auto calc2() { auto cb = ulong(0); foreach (vi; v) cb = cb.bitSet(vi); auto w = n.iota.setDifference(v).array; e.sort!"a.w < b.w"; auto u = n - t, ans = int.max; foreach (i; 0..1<<u) { auto cc = cb; foreach (j; 0..u) if (i.bitTest(j)) cc = cc.bitSet(w[j]); auto mif = n - cc.popcnt + 1; auto uf = UnionFind(n), r = 0; foreach (ei; e) { if (cc.bitTest(ei.s) && cc.bitTest(ei.t) && uf.unite(ei.s, ei.t)) { r += ei.w; if (uf.count <= mif) break; } } if (uf.count <= mif) ans = min(ans, r); } return ans; } writeln(t <= 13 ? calc1 : calc2); } pragma(inline) { pure bool bitTest(T)(T n, size_t i) { return (n & (T(1) << i)) != 0; } pure T bitSet(T)(T n, size_t i) { return n | (T(1) << i); } pure T bitReset(T)(T n, size_t i) { return n & ~(T(1) << i); } pure T bitComp(T)(T n, size_t i) { return n ^ (T(1) << i); } import core.bitop; pure int bsf(T)(T n) { return core.bitop.bsf(ulong(n)); } pure int bsr(T)(T n) { return core.bitop.bsr(ulong(n)); } pure int popcnt(T)(T n) { return core.bitop.popcnt(ulong(n)); } } struct Edge { size_t s, t; int w; } template Graph(Wt, Node, Wt _inf = 10 ^^ 9) { import std.algorithm, std.array; const inf = _inf; Wt minimumSteinerTree(Node[] t, Wt[][] g) { auto n = g.length, nt = t.length; auto d = g.map!(i => i.dup).array; foreach (k; 0..n) foreach (i; 0..n) foreach (j; 0..n) d[i][j] = min(d[i][j], d[i][k] + d[k][j]); auto opt = new Wt[][](1<<nt, n); foreach (s; 0..1<<nt) opt[s][] = inf; foreach (p; 0..nt) foreach (q; 0..n) opt[1<<p][q] = d[t[p]][q]; foreach (s; 1..1<<nt) if (s & (s-1)) { foreach (p; 0..n) foreach (e; 0..s) if ((e | s) == s) opt[s][p] = min(opt[s][p], opt[e][p] + opt[s-e][p]); foreach (p; 0..n) foreach (q; 0..n) opt[s][p] = min(opt[s][p], opt[s][q] + d[p][q]); } Wt ans = inf; foreach (s; 0..1<<nt) foreach (q; 0..n) ans = min(ans, opt[s][q] + opt[$-1-s][q]); return ans; } } struct UnionFind { import std.algorithm, std.range; size_t[] p; // parent const size_t s; // sentinel const size_t n; size_t count; this(size_t n) { this.n = n; p = new size_t[](n); s = n + 1; p[] = s; count = n; } size_t opIndex(size_t i) { if (p[i] == s) { return i; } else { p[i] = this[p[i]]; return p[i]; } } size_t find(size_t i) { return this[i]; } bool unite(size_t i, size_t j) { auto pi = this[i], pj = this[j]; if (pi != pj) { p[pj] = pi; --count; return true; } else { return false; } } bool isSame(size_t i, size_t j) { return this[i] == this[j]; } auto groups() { auto g = new size_t[][](n); foreach (i; 0..n) g[this[i]] ~= i; return g.filter!(l => !l.empty); } }