#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
vector<vector<ll> >adj;
ll arr[600];
ll tim = 0;
void dfs(ll idx,ll p){
arr[tim] = idx;
tim++;
for(auto x:adj[idx]){
if(x != p){
dfs(x,idx);
}
}
}
int findEgg(int N, vector < pair < int, int > > bridges){
adj.assign(N+5,vector<ll>());
for(auto x:bridges){
adj[x.F].pb(x.S);
adj[x.S].pb(x.F);
}
dfs(1,0);
ll l = 0,r = N-1;
while(l < r){
ll mid = (l+r)/2;
vll exo;
f(i,l,mid){
exo.pb(arr[i]);
}
if(query(exo)){
r = mid - 1;
}
else{
l = mid;
}
}
return l;
}
Compilation message
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:51:12: error: 'query' was not declared in this scope
51 | if(query(exo)){
| ^~~~~
