結果
問題 | No.417 チューリップバブル |
ユーザー |
|
提出日時 | 2022-06-30 18:55:59 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 44 ms / 2,000 ms |
コード長 | 3,879 bytes |
コンパイル時間 | 4,403 ms |
コンパイル使用メモリ | 257,228 KB |
最終ジャッジ日時 | 2025-01-30 02:00:06 |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 40 |
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_backtemplate<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;int main(){cin.tie(0);ios::sync_with_stdio(false);int n,m;cin >> n >> m;vector<int> u(n);REP(i,n) cin >> u[i];vector<vector<pair<int,int>>> e(n);REP(i,n-1){int a,b,c;cin >> a >> b >> c;e[a].PB({b,c});e[b].PB({a,c});}vector<vector<int>> dp(n,vector<int>(m+1,-1));auto dfs=[&](auto &&dfs,int cur,int pre=-1)->void{dp[cur][0]=u[cur];for(auto to:e[cur]){if(to.fi==pre) continue;dfs(dfs,to.fi,cur);vector<int> tp(m+1,-1);for(int i=0;i<=m;i++){if(dp[cur][i]==-1) continue;chmax(tp[i],dp[cur][i]);for(int j=0;i+j<=m;j++){if(i+j+to.se*2>m) continue;if(dp[to.fi][j]==-1) continue;if(cur==4&&to.fi==5) foo(i+j+to.se*2,dp[cur][i],dp[to.fi][j]);chmax(tp[i+j+to.se*2],dp[cur][i]+dp[to.fi][j]);}}// foo(cur,to.fi);// debug(tp);swap(tp,dp[cur]);}// foo(cur);// debug(dp[cur]);};dfs(dfs,0);int ans=0;REP(i,m+1) chmax(ans,dp[0][i]);cout << ans << endl;}