제출 #139653

#제출 시각아이디문제언어결과실행 시간메모리
139653muradeyn악어의 지하 도시 (IOI11_crocodile)C++14
46 / 100
256 ms262144 KiB
#include "crocodile.h" #include <bits/stdc++.h> #define F first #define S second using namespace std; const int maxx = 1000; int ext[maxx]; vector< pair<int,int> >adj[maxx]; vector< int > thru[maxx]; void dfs(int s,int p) { if (ext[s])return; for (auto to : adj[s]) { if (to.F == p)continue; dfs(to.F , s); if (ext[to.F])thru[s].push_back(to.S); else if (thru[to.F].size() == 2) thru[s].push_back(max(thru[to.F][0] , thru[to.F][1] + to.S)); } if (thru[s].size() < 2)thru[s].clear(); sort(thru[s].begin(),thru[s].end()); while (thru[s].size() > 2)thru[s].pop_back(); } int travel_plan(int n, int m, int R[][2], int L[], int k, int P[]) { for (int i = 0;i<m;i++) { int x = R[i][0] , y = R[i][1]; adj[x].push_back( {y , L[i]} ); adj[y].push_back( {x , L[i]} ); } for (int i = 0;i<k;i++) ext[P[i]] = 1; dfs(0 , -1); return thru[0][1]; }
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