#include <bits/stdc++.h>
using namespace std;
void dfs(int v, int p, vector<vector<int>>& adj, vector<int>& ans){
ans.push_back(v);
for(int u:adj[v]){
if(u==p)continue;
dfs(u, v, adj, ans);
}
}
int findEgg(int N, vector < pair < int, int > > bridges){
vector<int> ans;
vector<vector<int>> adj(N+1, vector<int>());
for(auto x:bridges){
adj[x.first].push_back(x.second);
adj[x.second].push_back(x.first);
}
dfs(1, 0, adj, ans);
int l=1,r=N;
while(l<=r){
int m=l+(r-l)/2;
vector<int> q;
for(int i=0;i<m;++i)q.push_back(ans[i]);
if(query(q))r=m-1;
else l=m+1;
}
return ans[min(N, r+1)-1];
}
Compilation message
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:25:6: error: 'query' was not declared in this scope
25 | if(query(q))r=m-1;
| ^~~~~
