Submission #981395

#	Time	Username	Problem	Language	Result	Execution time	Memory
981395		batsukh2006	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	13 ms	1020 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
#define ff first
#define ss second
vector<int> o;
vector<vector<int> > v;
void dfs(int a, int p){
	o.push_back(a);
	for(auto node: v[a]){
		if(node!=p){
			dfs(node,a);
		}
	}
}
int findEgg(int N, vector<pair<int,int> > bridges){
	o.clear();
	v.clear(),v.resize(N+1);
	for(auto p: bridges){
		v[p.ff].push_back(p.ss);
		v[p.ss].push_back(p.ff);
	}
	dfs(1,1);
	int l=0,r=N-2;
	while(l<=r){
		int m=l+(r-l)/2;
		vector<int> c(m+1);
		for(int i=0; i<=m; i++) c[i]=o[i];
		if(query(c)) r=m-1;
		else l=m+1;
	}
    return o[l];
}

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