Submission #1099586

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099586		Choco	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	14 ms	504 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
#define ll long long
using namespace std;
vector<ll>v[513];
vector<int>order;
void dfs(int i,int p){
    order.push_back(i);
    for(ll j: v[i])
    if(j!=p)
    dfs(j,i);
}
int findEgg (int N, vector < pair < int, int > > bridges)
{
    for(int i=0;i<513;i++){
    v[i].clear();
    }
    order.clear();
    for(pair<int,int> i: bridges){
        int x=i.first;
        int y=i.second;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    dfs(1,0);
    int l=0,r=N-1;
    while(l!=r){
        ll mid=(l+r+1)/2;
        if(query(vector<int>(order.begin(),order.begin()+mid)))
        r=mid-1;
        else
        l=mid;
    }
    return order[l];
}

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