Submission #1009792

#	Time	Username	Problem	Language	Result	Execution time	Memory
1009792		Mardonbekhazratov	악어의 지하 도시 (IOI11_crocodile)	C++17	46 / 100	137 ms	262144 KiB

crocodile

#include "crocodile.h"
#include<bits/stdc++.h>
#define ll long long
using namespace std;

vector<bool>is;
vector<vector<pair<int,int>>>v;

const int INF=1e9;

vector<ll>dfs(int x,ll d = 0,int p=-1){
    if(is[x]) return {d};
    vector<ll>a;
    for(auto [z,w]:v[x]){
        if(z!=p){
            vector<ll>b=dfs(z,d+w,x);
            sort(b.begin(),b.end());
            if(b.size()>1) a.push_back(b[1]);
            else if(b.size()) a.push_back(b[0]);
        }
    }
    return a;
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
    is.assign(N,false);
    for(int i=0;i<K;i++) is[P[i]]=true;
    v.resize(N);
    for(int i=0;i<M;i++){
        v[R[i][0]].push_back({R[i][1],L[i]});
        v[R[i][1]].push_back({R[i][0],L[i]});
    }
    vector<ll>ans=dfs(0);
    sort(ans.begin(),ans.end());
    return ans[1];
}

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11