Submission #683548

#	Time	Username	Problem	Language	Result	Execution time	Memory
683548		JooDdae	Easter Eggs (info1cup17_eastereggs)	C++17	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

vector<int> v[1010], l;

void dfs(int u, int p) {
    l.push_back(u);
    for(auto x : v[u]) if(x != p) dfs(x, u);
}

int findEgg(int N, vector<pair<int, int>> bridges) {
    for(auto [x, y] : bridges) v[x].push_back(y), v[y].push_back(x);
    dfs(1, 0);

    int L = 1, R = N-1;
    while(L <= R) {
        int M = (L+R)/2;

        if(query(vector<int>(l.begin(), l.begin()+M+1))) L = M+1;
        else R = M-1;
    }
    return l[R];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:20:12: error: 'query' was not declared in this scope
   20 |         if(query(vector<int>(l.begin(), l.begin()+M+1))) L = M+1;
      |            ^~~~~