제출 #419995

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
419995	2021-06-07 21:19:29	Runtime_error_	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	21 ms	472 KiB

eastereggs

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#include <bits/stdc++.h>
#include "grader.h"
#define pb push_back
using namespace std;
const int inf = 1e3+9;
vector<int> DfsOrder,adj[inf];
void dfs(int u,int p){
    DfsOrder.pb(u);
    for(auto v:adj[u])
        if(v != p)
            dfs(v,u);
}
int findEgg (int n, vector < pair < int, int > > bridges)
{
    for(int i=1;i<=n;i++)
        adj[i].clear();
    DfsOrder.clear();
    for(auto o:bridges)
        adj[o.first].pb(o.second),
        adj[o.second].pb(o.first);
    dfs(1,-1);
    int l = 0,r = n-1;
    while(r!=l){
        int mid = (l+r)/2;
        if(query(vector<int>(DfsOrder.begin(),DfsOrder.begin()+mid+1)))
            r = mid;
 
 
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• Subtask 1: 40 / 40
• Subtask 2: 40 / 40
• Subtask 3: 20 / 20