結果
問題 | No.386 貪欲な領主 |
ユーザー | recososo |
提出日時 | 2022-06-28 23:33:48 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 232 ms / 2,000 ms |
コード長 | 4,612 bytes |
コンパイル時間 | 4,590 ms |
コンパイル使用メモリ | 266,968 KB |
実行使用メモリ | 20,428 KB |
最終ジャッジ日時 | 2024-11-21 18:43:12 |
合計ジャッジ時間 | 7,068 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
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 232 ms
20,428 KB |
testcase_05 | AC | 153 ms
17,188 KB |
testcase_06 | AC | 155 ms
17,088 KB |
testcase_07 | AC | 3 ms
5,248 KB |
testcase_08 | AC | 18 ms
5,248 KB |
testcase_09 | AC | 3 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 3 ms
5,248 KB |
testcase_13 | AC | 5 ms
5,248 KB |
testcase_14 | AC | 157 ms
17,108 KB |
testcase_15 | AC | 187 ms
20,304 KB |
ソースコード
#include<bits/stdc++.h> #include<atcoder/all> using namespace std; using namespace atcoder; typedef long long ll; typedef long double ld; #define REP(i, n) for (int i = 0; i < (n); ++i) #define REPR(i, n) for (int i = n - 1; i >= 0; --i) #define FOR(i, m, n) for (int i = m; i < n; ++i) #define FORR(i, m, n) for (int i = m; i >= n; --i) #define ALL(v) (v).begin(),(v).end() #define ALLR(v) (v).rbegin(),(v).rend() #define fi first #define se second #define PB push_back #define EB emplace_back template<typename T> using PQ = priority_queue<T>; template<typename T> using QP = priority_queue<T,vector<T>,greater<T>>; template<typename T>void debug(const T &v,ll h,ll w){for(ll i=0;i<h;i++){for(ll j=0;j<w;j++)cerr<<v[i][j]<<" \n"[j==w-1];}}; template<typename T>void debug(const T &v,ll n){for(ll i=0;i<n;i++)cerr<<v[i]<<" \n"[i==n-1];}; template<typename T>void debug(const vector<T>&v){debug(v,v.size());} template<typename T>void debug(const vector<vector<T>>&v){for(auto &vv:v)debug(vv,vv.size());} template<typename T>void debug(stack<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;} template<typename T>void debug(queue<T> st){while(!st.empty()){cerr<<st.front()<<" ";st.pop();}cerr<<endl;} template<typename T>void debug(deque<T> st){while(!st.empty()){cerr<<st.front()<<" ";st.pop_front();}cerr<<endl;} template<typename T>void debug(PQ<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;} template<typename T>void debug(QP<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;} template<typename T>void debug(const set<T>&v){for(auto z:v)cerr<<z<<" ";cerr<<endl;} template<typename T>void debug(const multiset<T>&v){for(auto z:v)cerr<<z<<" ";cerr<<endl;} template<typename T,size_t size>void debug(const array<T, size> &a){for(auto z:a)cerr<<z<<" ";cerr<<endl;} template<typename T,typename V>void debug(const map<T,V>&v){for(auto z:v)cerr<<"["<<z.first<<"]="<<z.second<<",";cerr<<endl;} void foo() {cerr << endl;} template <class Head, class... Tail>void foo(Head&& head, Tail&&... tail){cerr << head << " ";foo(move(tail)...);} template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; } int popcount(ll x){return __builtin_popcountll(x);}; int poplow(ll x){return __builtin_ctzll(x);}; int pophigh(ll x){return 63 - __builtin_clzll(x);}; const ll INF=1LL<<60; const int inf=(1<<30)-1; // const int mod=1e9+7; const int mod=998244353; int dx[8]={1,0,-1,0,-1,-1,1,1}; int dy[8]={0,1,0,-1,-1,1,-1,1}; using mint=modint998244353; // using mint=modint1000000007; // LCA https://ei1333.github.io/luzhiled/snippets/tree/doubling-lowest-common-ancestor.html template< typename G > struct DoublingLowestCommonAncestor { const int LOG; vector< int > dep; const G &g; vector< vector< int > > table; DoublingLowestCommonAncestor(const G &g) : g(g), dep(g.size()), LOG(32 - __builtin_clz(g.size())) { table.assign(LOG, vector< int >(g.size(), -1)); } void dfs(int idx, int par, int d) { table[0][idx] = par; dep[idx] = d; for(auto &to : g[idx]) { if(to != par) dfs(to, idx, d + 1); } } void build() { dfs(0, -1, 0); for(int k = 0; k + 1 < LOG; k++) { for(int i = 0; i < table[k].size(); i++) { if(table[k][i] == -1) table[k + 1][i] = -1; else table[k + 1][i] = table[k][table[k][i]]; } } } int query(int u, int v) { if(dep[u] > dep[v]) swap(u, v); for(int i = LOG - 1; i >= 0; i--) { if(((dep[v] - dep[u]) >> i) & 1) v = table[i][v]; } if(u == v) return u; for(int i = LOG - 1; i >= 0; i--) { if(table[i][u] != table[i][v]) { u = table[i][u]; v = table[i][v]; } } return table[0][u]; } }; int main(){ cin.tie(0); ios::sync_with_stdio(false); int n;cin >> n; vector<vector<int>> e(n); REP(i,n-1){ int a,b;cin >> a >> b; e[a].PB(b); e[b].PB(a); } DoublingLowestCommonAncestor<vector<vector<int>>> lca(e); lca.build(); vector<int> u(n); REP(i,n) cin >> u[i]; int m;cin >> m; vector<ll> x(n); ll res=0; auto dfs=[&](auto &&dfs,int cur,int pre=-1)->void{ res+=u[cur]; x[cur]=res; for(auto to:e[cur]){ if(to==pre) continue; dfs(dfs,to,cur); } res-=u[cur]; }; dfs(dfs,0); ll ans=0; while(m--){ int a,b,c;cin >> a >> b >> c; int t=lca.query(a,b); ans+=(x[a]+x[b]-x[t]*2+u[t])*c; } cout << ans << endl; }