結果
問題 | No.1769 Don't Stop the Game |
ユーザー | 👑 Nachia |
提出日時 | 2021-11-27 00:22:41 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 192 ms / 3,000 ms |
コード長 | 2,973 bytes |
コンパイル時間 | 1,226 ms |
コンパイル使用メモリ | 100,900 KB |
実行使用メモリ | 54,988 KB |
最終ジャッジ日時 | 2024-06-29 18:52:54 |
合計ジャッジ時間 | 6,654 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 2 ms
6,816 KB |
testcase_01 | AC | 1 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,948 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 3 ms
6,944 KB |
testcase_08 | AC | 123 ms
29,520 KB |
testcase_09 | AC | 93 ms
21,924 KB |
testcase_10 | AC | 135 ms
29,076 KB |
testcase_11 | AC | 86 ms
22,100 KB |
testcase_12 | AC | 149 ms
35,320 KB |
testcase_13 | AC | 153 ms
35,632 KB |
testcase_14 | AC | 152 ms
35,900 KB |
testcase_15 | AC | 149 ms
35,768 KB |
testcase_16 | AC | 147 ms
35,824 KB |
testcase_17 | AC | 166 ms
35,860 KB |
testcase_18 | AC | 182 ms
36,696 KB |
testcase_19 | AC | 182 ms
37,088 KB |
testcase_20 | AC | 184 ms
37,252 KB |
testcase_21 | AC | 172 ms
37,764 KB |
testcase_22 | AC | 192 ms
37,248 KB |
testcase_23 | AC | 148 ms
35,604 KB |
testcase_24 | AC | 158 ms
35,836 KB |
testcase_25 | AC | 97 ms
36,080 KB |
testcase_26 | AC | 113 ms
37,620 KB |
testcase_27 | AC | 129 ms
54,708 KB |
testcase_28 | AC | 164 ms
54,988 KB |
testcase_29 | AC | 155 ms
47,056 KB |
testcase_30 | AC | 154 ms
47,048 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<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(auto e : E[p]) if(e.to != pre){ black_stack[H[p]].push_back(e.to); dfs(e.to,p); black_stack[H[p]].pop_back(); } } int main(){ cin >> N; E.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 }); } 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;