Submission #332568

#	Time	Username	Problem	Language	Result	Execution time	Memory
332568		codemaster111	Easter Eggs (info1cup17_eastereggs)	C++14	0 / 100	4 ms	620 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"

using namespace std;
#define pb push_back
#define f first
#define s second
#define FOR(i, a, b) for(int i=(a); i<(b); ++i)
#define trav(i, x) for(auto& i:x)

const int mx = 550;
vector<int> adj[mx], ans;

void dfs(int i, int p) {
	ans.pb(i);
	trav(u, adj[i]) {
		if (u != p)
			dfs(u, i);
	}
}

int findEgg (int N, vector < pair < int, int > > bridges)
{
	FOR(i, 0, mx)
		adj[i].clear();
	trav(ii, bridges)
		adj[ii.f].pb(ii.s), adj[ii.s].pb(ii.f);

	dfs(1, 0);

	//2^9=512
	// bin search on search vector for ans
	int lo = 0, hi = N-1;
	while (lo <= hi) {
		int mid = (lo+hi)/2;
		vector<int> cur(ans.begin(), ans.begin()+mid);
		if (query(cur))
			hi = mid-1;
		else
			lo = mid;
	}
	return ans[lo];
}

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