Submission #836296

#	Time	Username	Problem	Language	Result	Execution time	Memory
836296		KALARRY	Easter Eggs (info1cup17_eastereggs)	C++14	0 / 100	1 ms	464 KiB

eastereggs

//chockolateman

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

using namespace std;

int ans;
vector<int> adj[520];
int scores[520];
int target,temp;
vector<int> queries;


void dfs(int v,int p)
{
    if(scores[v]==0)
        return;
    temp -= scores[v];
    queries.push_back(v);
    if(temp==0)
        return;
    for(auto u : adj[v])
        if(u!=p)
            dfs(u,v);
}

int findEgg(int N,vector<pair<int,int>> bridges)
{
    for(auto e : bridges)
    {
        int a = e.first;
        int b = e.second;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    for(int i = 1 ; i <= N ; i++)
       scores[i] = 1;
    target = N;
    while(target>1)
    {
        queries.clear();
        target/=2;
        //printf("targ = %d\n",target);
        temp = target;
        dfs(1,1);
        int res = query(queries);
        if(res==0)
            for(auto u : queries)
                scores[u] = 0;
        else
        {
            for(auto u : queries)
                scores[u]++;
            for(int i = 1 ; i <= N ; i++)
            {
                if(scores[i]==1)
                    scores[i] = 0;
                if(scores[i]==2)
                    scores[i] = 1;
            }
        }
    }
    int egg = -1;
    for(int i = 1 ; i <= N ; i++)
        if(scores[i]==1)
            egg = i;
    return egg;    
}

// int main()
// {
//     int N;
//     scanf("%d",&N);
//     vector<pair<int,int>> edges;
//     for(int a,b,i = 1 ; i < N ; i++)
//     {
//         scanf("%d%d",&a,&b);
//         edges.push_back({a,b});
//     }
//     scanf("%d",&ans);
//     printf("IN\n");
//     int res = findEgg(N,edges);
//     if(res==ans)
//         printf("Correct\n");
//     else
//         printf("WA answered %d\n",res);
// }

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