Submission #1189882

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189882		racha555	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	1 ms	1620 KiB

eastereggs

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

using namespace std;

void dfs(int u,vector<vector<int>>&adj,vector<vector<int>> &path){
    for(auto v:adj[u]){
        if(path[v].empty()){
            path[v]=path[u];
       
            path[v].emplace_back(v);
            dfs(v,adj,path);
        }
    }
}

int  findEgg (int N, vector < pair < int, int > > bridges)
{
    vector<vector<int>> adj(513),path(513);
    for(auto [u,v]:bridges){
          adj[u].emplace_back(v);
          adj[v].emplace_back(u);
    }
    path[1].emplace_back(1);
    dfs(1,adj,path);
 
    path[1].emplace_back(1);
    int l=0,mid,r=N;
    while(l<r){
        int  mid=l+(r-l)/2;
        if(query(path[mid])==1){
            r=mid;
        }
        else{
            l=mid+1;
        }
    }
    return r;
    // if (query ({1})) return 1;
    // return N;

}
// int main(){
//     findEgg(5,{{1,2},{1,3},{2,4},{4,5}});
// }

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