Submission #1200898

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200898		BehruzbekX	Easter Eggs (info1cup17_eastereggs)	C++17	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

int findEgg (int N, vector < pair < int, int > > bridges)
{
    vector<vector<int>> a(N);
    for (auto [x, y] : bridges) --x, --y, a[x].emplace_back(y), a[y].emplace_back(x);
    vector<int> g;
    auto dfs = [&](auto &dfs, int v, int p) -> void{
        g.emplace_back(v);
        for (int u : a[v]) if (u != p) dfs(dfs, u, v);
    };  
    dfs(dfs, 0, -1);
    int l = 0, r = n - 1, ans = -1;
    while (l <= r) {
        int mid = (l + r) >> 1;
        if (query(g.begin(), g.begin() + mid)) ans = mid, r = mid - 1;
        else l = mid + 1;
    }
    return ans;
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:16:20: error: 'n' was not declared in this scope
   16 |     int l = 0, r = n - 1, ans = -1;
      |                    ^
eastereggs.cpp:19:26: error: could not convert 'g.std::vector<int>::begin()' from 'std::vector<int>::iterator' to 'std::vector<int>'
   19 |         if (query(g.begin(), g.begin() + mid)) ans = mid, r = mid - 1;
      |                   ~~~~~~~^~
      |                          |
      |                          std::vector<int>::iterator
eastereggs.cpp:19:48: error: 'ans' was not declared in this scope; did you mean 'abs'?
   19 |         if (query(g.begin(), g.begin() + mid)) ans = mid, r = mid - 1;
      |                                                ^~~
      |                                                abs
eastereggs.cpp:22:12: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |     return ans;
      |            ^~~
      |            abs