#include <bits/stdc++.h>
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define uniq(x) x.erase(unique(all(x)), x.end())
#define rall(x) x.rbegin(), x.rend()
//#define int long long
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;
void setIO() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
vector<vector<int> > graph;
vector<int> euler;
void dfs(int u, int p) {
euler.push_back(u);
for(int &v : graph[u]) {
if(v == p) continue;
dfs(v, u);
}
}
int findEgg(int n, vector<pair<int, int> > edges) {
graph.resize(n+1);
for(pair<int, int> &edge : edges) {
graph[edge.first].push_back(edge.second);
graph[edge.second].push_back(edge.first);
}
dfs(1, 0);
int ans = 0;
int l=0, r=n-1;
while(l <= r) {
int mid = (l + r) / 2;
vector<int> to_query;
for(int i=l i<=mid; i++) {
to_query.push_back(euler[i]);
}
if(query(to_query)) {
ans = mid;
r = mid - 1;
} else {
l = mid + 1;
}
}
return ans;
}
// int32_t main() {
// setIO();
// int n;
// cin >> n;
// vector<pii> edges(n-1);
// for(int i=0; i<n-1; i++) {
// int a, b;
// cin >> a >> b;
// edges[i] = {a, b};
// }
// findEgg(n, edges);
// return 0;
// }
Compilation message
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:56:20: error: expected ';' before 'i'
56 | for(int i=l i<=mid; i++) {
| ^~
| ;
eastereggs.cpp:60:12: error: 'query' was not declared in this scope; did you mean 'to_query'?
60 | if(query(to_query)) {
| ^~~~~
| to_query
