Submission #1319941

#	Time	Username	Problem	Language	Result	Execution time	Memory
1319941		lknijikaijichi	Easter Eggs (info1cup17_eastereggs)	C++20	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
using namespace std;
template <typename T>
using vec = vector<T>;
#define fi first
#define sc second

using namespace std;

constexpr int maxn = 513;
vec<vec<int>> adj(maxn);
int timer = 0;
vec<int> path(maxn);
void dfs(int u, int p) {
	path[++timer] = u;
    for (int& v : adj[u]) {
        if (v != p) dfs(v, u);
    }
}

int findEgg (int n, vec<pair<int,int>> edges) {
    for (auto& edge : edges) {
        adj[edge.fi].push_back(edge.sc);
        adj[edge.sc].push_back(edge.fi);
    }
    dfs(1, 1);
    int lo = 1, hi = n;
    while (lo < hi) {
        int mid = (lo + hi) >> 1;
        vec<int> pt;
        for (int i = 1; i <= mid; ++i)
            pt.push_back(path[i]);
        if (query(v)) hi = mid;
        else lo = mid + 1;
    }
    return path[lo];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, vec<std::pair<int, int> >)':
eastereggs.cpp:33:19: error: 'v' was not declared in this scope
   33 |         if (query(v)) hi = mid;
      |                   ^
eastereggs.cpp:33:13: error: 'query' was not declared in this scope
   33 |         if (query(v)) hi = mid;
      |             ^~~~~