#include <bits/stdc++.h>
using namespace std;
vector<int> o;
void order(int x, int t, vector<vector<int>> v) {
o.push_back(x);
for (int i : v[x]) {
if (i == t)
continue;
order(i, x, v);
}
}
int findEgg(int N, vector < pair < int, int > > bridges) {
vector<vector<int>> g(N+1);
for (auto p : bridges) {
int u = p.first, v = p.second;
g[u].push_back(v);
g[v].push_back(u);
}
order(1, -1, g);
int l = 0, r = N-2, mid, x = N-1;
while (l <= r) {
mid = (l+r)/2;
vector<int> a;
for (int i=0; i<=mid; i++)
a.push_back(o[i]);
if (query(a)) {
r = mid-1;
x = mid;
} else {
l = mid+1;
}
}
int ans = o[x];
o.clear();
return ans;
}
Compilation message
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:33:9: error: 'query' was not declared in this scope
33 | if (query(a)) {
| ^~~~~
