제출 #1127137

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1127137		Choco	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	1 ms	444 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
#define ll long long
#define ff first 
#define ss second
#define pb push_back
vector<vector<ll>>g;
vector<ll>check,order;
void dfs(ll node){
    check[node]=1;
    for(ll i:g[node]){
        if(!check[node])
        dfs(node);
    }
    order.pb(node);
}
int findEgg (int n, vector < pair < int, int > > bridges)
{
    g.resize(n+10);
    for(ll i=0;i<n;i++){
        g[bridges[i].ff].pb(bridges[i].ss);
        g[bridges[i].ss].pb(bridges[i].ff);
    }   
    reverse(order.begin(),order.end());
    check.resize(n+10);
    dfs(1);
    ll l=0,r=n-1;
    while(l<r){
        ll mid=(l+1+r)/2;
        if(query(vector<int>(order.begin(),order.begin()+mid)))
        r=mid-1;
        else
        l=mid;
    }
    return order[l];
}

• Subtask 1: 0 / 40
• Subtask 2: 0 / 40
• Subtask 3: 0 / 20