Submission #1145970

#	Time	Username	Problem	Language	Result	Execution time	Memory
1145970		txni128	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	1 ms	500 KiB

eastereggs

#include "grader.h"
#include <iostream>
#include <vector>
using namespace std;
int used[1024];
vector <int> v[1024];
vector <int> ans;
void dfs(int beg)
{
    used[beg]=1;
    ans.push_back(beg);
    for(auto c:v[beg])
    {
        if(!used[c])
        {
            dfs(c);
        }
    }
    return;
}
int findEgg(int N, vector < pair < int, int > > bridges)
{
    fill(used,used+1000,0);
    ans.clear();
    for(int i=1;i<=1010;i++)
    {
        v[i].clear();
    }
    for(auto c:bridges)
    {
        v[c.first].push_back(c.second);
        v[c.second].push_back(c.first);
    }
    dfs(1);
    int l=0;
    int r=N-1;
    int mid;
    bool la;
    while(l<r)
    {
        mid=(l+r)/2;
        vector <int>k;
        for(int i=0;i<=mid;i++)
        {
            k.push_back(ans[i]);
        }
        la=query(k);
        if(la)
        {
            r=mid;
        }
        else l=mid+1;
    }
    for(int i=1;i<1000000000;i++)
    {
        if(i==i)i=i;
        r=i%69*69;
    }
    //cout << l << endl;
    return ans[r];
}

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