結果
問題 | No.1494 LCS on Tree |
ユーザー | SSRS |
提出日時 | 2021-04-30 22:34:11 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,105 bytes |
コンパイル時間 | 1,897 ms |
コンパイル使用メモリ | 185,908 KB |
実行使用メモリ | 34,944 KB |
最終ジャッジ日時 | 2024-07-19 02:12:44 |
合計ジャッジ時間 | 4,804 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 57 ms
34,816 KB |
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 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | WA | - |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 1 ms
5,376 KB |
testcase_26 | AC | 1 ms
5,376 KB |
testcase_27 | WA | - |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 57 ms
34,816 KB |
testcase_31 | AC | 56 ms
34,688 KB |
testcase_32 | AC | 59 ms
34,944 KB |
testcase_33 | AC | 57 ms
34,944 KB |
testcase_34 | AC | 58 ms
34,816 KB |
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 | AC | 54 ms
34,688 KB |
testcase_46 | AC | 55 ms
34,688 KB |
testcase_47 | AC | 56 ms
34,688 KB |
testcase_48 | AC | 55 ms
34,816 KB |
testcase_49 | AC | 55 ms
34,944 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; int main(){ int N; cin >> N; string S; cin >> S; int M = S.size(); vector<vector<pair<char, int>>> E(N); for (int i = 0; i < N - 1; i++){ int u, v; char c; cin >> u >> v >> c; u--; v--; E[u].push_back(make_pair(c, v)); E[v].push_back(make_pair(c, u)); } vector<int> p(N, -1); vector<char> p2(N); vector<vector<int>> c(N); queue<int> Q; Q.push(0); vector<int> bfs; while (!Q.empty()){ int v = Q.front(); Q.pop(); bfs.push_back(v); for (auto P : E[v]){ int w = P.second; if (w != p[v]){ p[w] = v; p2[w] = P.first; c[v].push_back(w); Q.push(w); } } } reverse(bfs.begin(), bfs.end()); vector<vector<int>> dp1(N, vector<int>(M + 1, 0)); for (int v : bfs){ for (int i = 0; i < M; i++){ dp1[v][i + 1] = max(dp1[v][i + 1], dp1[v][i]); } if (v != 0){ for (int i = 0; i <= M; i++){ dp1[p[v]][i] = max(dp1[p[v]][i], dp1[v][i]); } for (int i = 0; i < M; i++){ if (S[i] == p2[v]){ dp1[p[v]][i + 1] = max(dp1[p[v]][i + 1], dp1[v][i] + 1); } } } } vector<vector<int>> dp2(N, vector<int>(M + 1, 0)); for (int v : bfs){ for (int i = M - 1; i >= 0; i--){ dp2[v][i] = max(dp2[v][i], dp2[v][i + 1]); } if (v != 0){ for (int i = M; i >= 0; i--){ dp2[p[v]][i] = max(dp2[p[v]][i], dp2[v][i]); } for (int i = M - 1; i >= 0; i--){ if (S[i] == p2[v]){ dp2[p[v]][i] = max(dp2[p[v]][i], dp2[v][i + 1] + 1); } } } } int ans = 0; for (int i = 0; i <= M; i++){ ans = max(ans, dp1[0][i]); ans = max(ans, dp2[0][i]); } for (int v : bfs){ vector<int> mx1(M + 1, 0); vector<int> mx2(M + 1, 0); for (int w : c[v]){ for (int i = 0; i <= M; i++){ ans = max(ans, mx1[i] + dp2[w][i]); mx1[i] = max(mx1[i], dp1[w][i]); ans = max(ans, mx2[i] + dp1[w][i]); mx2[i] = max(mx2[i], dp2[w][i]); } } } cout << ans << endl; }