結果
問題 | No.417 チューリップバブル |
ユーザー | kei |
提出日時 | 2018-12-05 23:36:10 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 62 ms / 2,000 ms |
コード長 | 2,446 bytes |
コンパイル時間 | 2,103 ms |
コンパイル使用メモリ | 175,196 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-21 20:47:33 |
合計ジャッジ時間 | 3,604 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 4 ms
6,812 KB |
testcase_01 | AC | 4 ms
6,944 KB |
testcase_02 | AC | 4 ms
6,940 KB |
testcase_03 | AC | 3 ms
6,944 KB |
testcase_04 | AC | 4 ms
6,940 KB |
testcase_05 | AC | 3 ms
6,940 KB |
testcase_06 | AC | 3 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,944 KB |
testcase_08 | AC | 4 ms
6,944 KB |
testcase_09 | AC | 5 ms
6,940 KB |
testcase_10 | AC | 13 ms
6,944 KB |
testcase_11 | AC | 17 ms
6,940 KB |
testcase_12 | AC | 12 ms
6,940 KB |
testcase_13 | AC | 31 ms
6,940 KB |
testcase_14 | AC | 14 ms
6,940 KB |
testcase_15 | AC | 9 ms
6,940 KB |
testcase_16 | AC | 6 ms
6,944 KB |
testcase_17 | AC | 19 ms
6,940 KB |
testcase_18 | AC | 26 ms
6,944 KB |
testcase_19 | AC | 15 ms
6,944 KB |
testcase_20 | AC | 28 ms
6,940 KB |
testcase_21 | AC | 29 ms
6,940 KB |
testcase_22 | AC | 32 ms
6,940 KB |
testcase_23 | AC | 35 ms
6,944 KB |
testcase_24 | AC | 35 ms
6,944 KB |
testcase_25 | AC | 22 ms
6,944 KB |
testcase_26 | AC | 9 ms
6,944 KB |
testcase_27 | AC | 28 ms
6,940 KB |
testcase_28 | AC | 34 ms
6,940 KB |
testcase_29 | AC | 28 ms
6,940 KB |
testcase_30 | AC | 62 ms
6,940 KB |
testcase_31 | AC | 38 ms
6,944 KB |
testcase_32 | AC | 3 ms
6,940 KB |
testcase_33 | AC | 3 ms
6,944 KB |
testcase_34 | AC | 8 ms
6,940 KB |
testcase_35 | AC | 58 ms
6,940 KB |
testcase_36 | AC | 51 ms
6,944 KB |
testcase_37 | AC | 34 ms
6,940 KB |
testcase_38 | AC | 26 ms
6,940 KB |
testcase_39 | AC | 16 ms
6,944 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; } inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; } template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:https://yukicoder.me/problems/no/417> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ int dp[200][2001]; void rec(int n,int pre,vector<vector<pii>>& G,vector<int>& U){ dp[n][0] = U[n]; for(auto p:G[n]){ int next,cost; tie(next,cost) = p; if(next == pre) continue; rec(next,n,G,U); for(int i = 2000; i >= 0; i--){ if(dp[n][i] == -1) continue; for(int j = 2000; j >= 0; j--){ if(dp[next][j] == -1) continue; if(i+j+cost > 2000) continue; dp[n][i+j+cost] = max(dp[n][i+j+cost],dp[n][i]+dp[next][j]); } } } } ll solve(){ ll res = 0; int N,M; cin >> N >> M; vector<int> U(N); for(auto& in:U) cin >> in; vector<vector<pii>> G(N); for(int i = 0; i < N-1;i++){ int A,B,C; cin >> A >> B >> C; G[A].push_back(pii(B,C)); G[B].push_back(pii(A,C)); } fill(*dp,*dp+200*2001,-1); rec(0,-1,G,U); for(int i = 0; i*2 <= M;i++) res = max(res,(ll)dp[0][i]); return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }