結果
問題 | No.1494 LCS on Tree |
ユーザー | 👑 hos.lyric |
提出日時 | 2022-11-27 20:11:03 |
言語 | D (dmd 2.106.1) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,596 bytes |
コンパイル時間 | 974 ms |
コンパイル使用メモリ | 123,140 KB |
実行使用メモリ | 36,924 KB |
最終ジャッジ日時 | 2024-06-22 16:51:03 |
合計ジャッジ時間 | 7,727 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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
6,812 KB |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | AC | 159 ms
36,508 KB |
testcase_16 | AC | 161 ms
36,020 KB |
testcase_17 | AC | 161 ms
35,544 KB |
testcase_18 | AC | 159 ms
36,252 KB |
testcase_19 | AC | 1 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,944 KB |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 1 ms
6,944 KB |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | AC | 2 ms
6,940 KB |
testcase_28 | WA | - |
testcase_29 | AC | 1 ms
6,944 KB |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | WA | - |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
testcase_49 | WA | - |
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; } 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)); } int N; string S; int[] A, B; char[] C; int[][] G; int[] us; int[] pari; void dfs(int u, int pi) { us ~= u; pari[u] = pi; foreach (i; G[u]) if (pi != i) { if (B[i] == u) { swap(A[i], B[i]); } dfs(B[i], i); } } void main() { try { for (; ; ) { N = readInt; S = readToken; A = new int[N - 1]; B = new int[N - 1]; C = new char[N - 1]; foreach (i; 0 .. N - 1) { A[i] = readInt - 1; B[i] = readInt - 1; C[i] = readToken[0]; } G = new int[][N]; foreach (i; 0 .. N - 1) { G[A[i]] ~= i; G[B[i]] ~= i; } us = []; pari = new int[N]; dfs(0, -1); const SLen = cast(int)(S.length); auto up = new int[][](N - 1, SLen + 1); auto dn = new int[][](N - 1, SLen + 1); foreach_reverse (u; us) { const i = pari[u]; if (~i) { // start foreach (k; 0 .. SLen) { if (C[i] == S[k ]) chmax(up[i][k], 1); if (C[i] == S[SLen - 1 - k]) chmax(dn[i][k], 1); } // trans foreach (k; 0 .. SLen) { chmax(up[i][k + 1], up[i][k]); chmax(dn[i][k + 1], dn[i][k]); } const j = pari[A[i]]; if (~j) { foreach (k; 0 .. SLen + 1) { chmax(up[j][k], up[i][k]); chmax(dn[j][k], dn[i][k]); } foreach (k; 0 .. SLen) { if (C[j] == S[k ]) chmax(up[j][k + 1], up[i][k] + 1); if (C[j] == S[SLen - 1 - k]) chmax(dn[j][k + 1], dn[i][k] + 1); } } } } debug { writeln("A = ", A); writeln("B = ", B); writeln("up = ", up); writeln("dn = ", dn); } int ans; foreach (u; us) foreach (k; 0 .. SLen + 1) { int[2] mxs = [0, 0]; int[2] js = [-1, -1]; foreach (i; G[u]) if (A[i] == u) { int tmp = up[i][k]; int j = i; static foreach (h; 0 .. 2) { if (mxs[h] < tmp) { swap(mxs[h], tmp); swap(js[h], j); } } } foreach (i; G[u]) if (A[i] == u) { const mx = mxs[(js[0] != 0) ? 0 : 1]; chmax(ans, mx + dn[i][SLen - k]); } } writeln(ans); } } catch (EOFException e) { } }