제출 #1170338

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1170338		rayan_bd	꿈 (IOI13_dreaming)	C++20	0 / 100	1096 ms	13184 KiB

dreaming

#include <bits/stdc++.h>
#include"dreaming.h"

using namespace std;

#define ll long long
#define show(n) cout<<n<<'\n'
#define all(v) v.begin(), v.end()
#define pb push_back
#define fi first
#define se second

const int INF = -1e9;
const int mxN = 1e5 + 5;

vector<pair<int,int>> adj[mxN];
int compo[mxN],curr=0;

void add_edge(int u,int v,int w){
	adj[u].pb({v,w});
	adj[v].pb({u,w});
}

int dfs(int u,int par,int w){
	if(adj[u].size()==1) return w;
	if(curr==0) compo[u]=curr;
	int mx=0;
	for(auto it:adj[u]){
		if(it.fi^par) mx=max(mx,dfs(it.fi,u,w+it.se));
	}
	return mx;
}

int travelTime(int N,int M,int L,int A[],int B[],int T[]){
	for(int i=0;i<N;++i) adj[i].clear(),compo[i]=curr=0ll;
	for(int i=0;i<N;++i) add_edge(A[i],B[i],T[i]);
	int cost1=INF,cost2=INF;
	dfs(0,-1,0); ++curr;
	for(int i=0;i<N;++i){
		if(compo[i]==0){
			cost1=min(cost1,dfs(i,-1,0));
		}else{
			cost2=min(cost1,dfs(i,-1,0));
		}
	}
	return cost1+cost2+L;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 10
• Subtask 3: 0 / 23
• Subtask 4: 0 / 18
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23