結果
問題 | No.2236 Lights Out On Simple Graph |
ユーザー | 👑 hos.lyric |
提出日時 | 2023-03-03 21:45:02 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 631 ms / 4,000 ms |
コード長 | 2,476 bytes |
コンパイル時間 | 1,154 ms |
コンパイル使用メモリ | 131,864 KB |
実行使用メモリ | 37,156 KB |
最終ジャッジ日時 | 2024-06-22 17:35:11 |
合計ジャッジ時間 | 17,966 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 57 |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, 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; } 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)); } void main() { try { for (; ; ) { const N = readInt; const M = readInt; auto A = new int[M]; auto B = new int[M]; foreach (i; 0 .. M) { A[i] = readInt - 1; B[i] = readInt - 1; } auto C = new int[N]; foreach (u; 0 .. N) { C[u] = readInt; } long ini; foreach (u; 0 .. N) if (C[u]) { ini |= 1L << u; } const half = M / 2; alias Entry = Tuple!(long, "on", int, "cost"); auto fs = new Entry[1 << half]; foreach (i; 0 .. half) { foreach (h; 0 .. 1 << i) { fs[h | 1 << i].on = fs[h].on ^ (1L << A[i]) ^ (1L << B[i]); fs[h | 1 << i].cost = fs[h].cost + 1; } } fs.sort; auto gs = new Entry[1 << (M - half)]; foreach (i; 0 .. M - half) { foreach (h; 0 .. 1 << i) { gs[h | 1 << i].on = gs[h].on ^ (1L << A[half + i]) ^ (1L << B[half + i]); gs[h | 1 << i].cost = gs[h].cost + 1; } } int ans = M + 1; foreach (ref g; gs) { const tar = ini ^ g.on; const pos = fs.lowerBound(Entry(tar, -1)); if (pos < fs.length && fs[pos].on == tar) { chmin(ans, fs[pos].cost + g.cost); } } writeln((ans <= M) ? ans : -1); } } catch (EOFException e) { } }