Submission #1211076

#	Time	Username	Problem	Language	Result	Execution time	Memory
1211076		ziewacz	Easter Eggs (info1cup17_eastereggs)	C++20	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define imie(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
const int mod=1e9+7;
const int n=513;
vector<int> graf[n];
vector<int> ord;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

void dfs(int v, int par) {
    ord.push_back(v);
    for(auto &u : graf[v]) {
        if(v != par) {
            dfs(u, v);
        }
    }
}

int findEgg(int N, vector<pair<int, int>> bridges) {
    for(auto &p : bridges) {
        graf[p.first].push_back(p.second);
        graf[p.second].push_back(p.first);
    }
    dfs(1, -1);
    int l = 0, r = N;
    int mid = (l + r) >> 1;
    vector<int> v;
    while(l < r) {
        for(int i = 0; i <= mid; i++) {
            v.push_back(ord[i]);
        }
        if(!query(v)) {
            l = mid + 1;   
        } else {
            r = mid;
        }
    }
    return v[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:37:13: error: 'query' was not declared in this scope
   37 |         if(!query(v)) {
      |             ^~~~~