Submission #1177756

#	Time	Username	Problem	Language	Result	Execution time	Memory
1177756		tommi	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	2 ms	5156 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
#define pb push_back
#define ll long long
using namespace std;
const ll sz = 2e5+5;
vector<int>g[sz], v;
ll used[sz], t=0, in[sz];
void dfs(ll node)
{
    used[node]=1;
    in[t++]=node;
    for(auto cur : g[node])
    {
        if(!used[cur]) dfs(cur);
    }
}
int findEgg (int n, vector < pair < int, int > > bridges)
{
    for(int i=0; i<n-1; i++) g[i].clear();
    for(int i=0; i<n-1; i++)
    {
        ll x=bridges[i].first, y=bridges[i].second;
        g[x].pb(y);
        g[y].pb(x);
    }
    ll l=1, r=n;
    while(l<=r)
    {
        v.clear();
        ll mid=(l+r)>>1;
        for(int i=1; i<=mid; i++) v.pb(in[i]);
        if(query(v))
        {
            r=mid-1;
        }
        else
        {
            l=mid+1;
        }
    }
    return in[l];
}

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