結果
問題 | No.1769 Don't Stop the Game |
ユーザー | 👑 Nachia |
提出日時 | 2021-11-26 23:04:44 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 398 ms / 3,000 ms |
コード長 | 3,072 bytes |
コンパイル時間 | 1,312 ms |
コンパイル使用メモリ | 101,192 KB |
実行使用メモリ | 65,688 KB |
最終ジャッジ日時 | 2024-06-29 18:28:35 |
合計ジャッジ時間 | 9,277 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 3 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 249 ms
38,108 KB |
testcase_09 | AC | 163 ms
28,216 KB |
testcase_10 | AC | 254 ms
37,436 KB |
testcase_11 | AC | 151 ms
28,748 KB |
testcase_12 | AC | 314 ms
46,052 KB |
testcase_13 | AC | 323 ms
46,780 KB |
testcase_14 | AC | 329 ms
46,900 KB |
testcase_15 | AC | 330 ms
46,916 KB |
testcase_16 | AC | 325 ms
46,912 KB |
testcase_17 | AC | 348 ms
47,084 KB |
testcase_18 | AC | 385 ms
48,060 KB |
testcase_19 | AC | 365 ms
48,316 KB |
testcase_20 | AC | 376 ms
48,440 KB |
testcase_21 | AC | 367 ms
48,444 KB |
testcase_22 | AC | 398 ms
48,440 KB |
testcase_23 | AC | 304 ms
46,860 KB |
testcase_24 | AC | 306 ms
46,884 KB |
testcase_25 | AC | 131 ms
47,792 KB |
testcase_26 | AC | 154 ms
49,324 KB |
testcase_27 | AC | 176 ms
65,272 KB |
testcase_28 | AC | 224 ms
65,688 KB |
testcase_29 | AC | 204 ms
57,912 KB |
testcase_30 | AC | 212 ms
57,908 KB |
ソースコード
#include <iostream> #include <vector> #include <algorithm> using namespace std; using i32 = int32_t; using u32 = uint32_t; using i64 = int64_t; using u64 = uint64_t; #define rep(i,n) for(int i=0; i<(n); i++) class CoordinateCompress { using Elem = i64; static const Elem negInf = -1001001001001001001; vector<pair<Elem, int>> G; vector<int> res; vector<Elem> mRealval; Elem mMaxcoord; bool ok = true; void calc() { if (ok) return; sort(G.begin(), G.end()); res.resize(G.size()); mRealval.clear(); Elem x = negInf; int p = -1; rep(i, G.size()) { if (x != G[i].first) { x = G[i].first; mRealval.push_back(x); p++; } res[G[i].second] = p; } mMaxcoord = p; ok = true; } public: int push(Elem x) { ok = false; G.push_back({ x,(int)G.size() }); return G.back().second; } int operator[](int i) { calc(); return res[i]; } Elem realval(int x) { calc(); return mRealval[x]; } Elem maxcoord() { calc(); return mMaxcoord; } }; struct Edge{ int to; u32 h; }; int N; vector<vector<Edge>> E; vector<vector<int>> hldE; vector<int> P; vector<int> Z; CoordinateCompress CCH; vector<u32> H; vector<vector<int>> black_stack; vector<int> prev_black; vector<int> block_size; vector<int> root_size; i64 ans; void dfs(int p = 0, int pre = -1){ if(pre == -1){ black_stack.assign(N,{0}); prev_black.assign(N,0); block_size.assign(N,0); root_size.assign(N,N); ans = 0; } int h = H[p]; block_size[p] = Z[p]; prev_black[p] = black_stack[h].back(); if(prev_black[p] != 0) block_size[prev_black[p]] -= Z[p]; else root_size[h] -= Z[p]; for(int e : hldE[p]) if(e != pre){ black_stack[H[p]].push_back(e); dfs(e,p); black_stack[H[p]].pop_back(); } } int main(){ cin >> N; E.resize(N); hldE.resize(N); rep(i,N-1){ int u,v; u32 c; cin >> u >> v >> c; u--; v--; E[u].push_back({ v,c }); E[v].push_back({ u,c }); hldE[u].push_back(v); hldE[v].push_back(u); } vector<int> I = {0}; P.assign(N,-1); H.assign(N,0); rep(i,I.size()){ int p = I[i]; for(auto e : E[p]){ if(P[p] == e.to) continue; I.push_back(e.to); P[e.to] = p; H[e.to] = H[p] ^ e.h; } } Z.assign(N,1); for(int i=N-1; i>=1; i--) Z[P[I[i]]] += Z[I[i]]; rep(i,N) H[i] = CCH.push(H[i]); rep(i,N) H[i] = CCH[H[i]]; dfs(); i64 ans = 0; for(int p=1; p<N; p++) ans += block_size[p]; for(int p=1; p<N; p++){ if(prev_black[p] != 0) ans += block_size[prev_black[p]]; else ans += root_size[H[p]]; } cout << ans << endl; return 0; } struct ios_do_not_sync { ios_do_not_sync() { ios::sync_with_stdio(false); cin.tie(nullptr); } } ios_do_not_sync_instance;