Submission #360180

#	Time	Username	Problem	Language	Result	Execution time	Memory
360180		tengiz05	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	26 ms	564 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
#ifndef EVAL
#include "grader.cpp"
#endif
using namespace std;
const int MAXN = 515;
vector<int> edges[MAXN];
int n;
vector<int> a;
void dfs(int u, int p = -1){
	a.push_back(u);
	for(auto v : edges[u]){
		if(v == p)continue;
		dfs(v,u);
	}
}
int findEgg(int N, vector<pair<int,int>> bridges){
	n = N;
	for(auto [u, v] : bridges){
		edges[u].push_back(v);
		edges[v].push_back(u);
	}dfs(1);
	int l=0, r=n-1;
	while(l < r){
		int mid = (l+r)>>1;
		vector<int> toask;
		for(int i=0;i<=mid;i++){
			toask.push_back(a[i]);
		}if(query(toask))r = mid;
		else l = mid+1;
	}
	int ans = a[l];
	for(int i=1;i<=n;i++){
		edges[i].clear();
	}a.clear();
	return ans;
}

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