Submission #1364006

#	Time	Username	Problem	Language	Result	Execution time	Memory
1364006		abgfd324	Easter Eggs (info1cup17_eastereggs)	C++20	Compilation error	0 ms	0 KiB

eastereggs

#include<iostream>
#include<vector>
#include"grader.h"
using namespace std;
vector<int> euler;
vector<int> adj[513];
vector<int> cur;
void DFS(int cur, int prev)
{
    euler.push_back(cur);
    for(int next : adj[cur])
    {
        if(next != prev) DFS(next, cur);
    }
}
int findEgg(int N, vector<pair<int, int>> bridges)
{
    adj.reserve(N+1);
    euler.reserve(N+1);
    cur.reserve(N+1);
    for(pair<int, int> edge : bridges)
    {
        adj[edge.first].push_back(edge.second);
        adj[edge.second].push_back(edge.first);
    }
    DFS(1, 0);
    int l = 0, r = N-1;
    while(l < r)
    {
        int m = (l+r+1)/2;
        for(int i = 0; i < m; i++)
        {
            cur.push_back(euler[i]);
        }
        if(query(cur)) r = m-1;
        else l = m;
        for(int i = 0; i < m; i++) cur.pop_back();
        
    }
    return euler[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:18:9: error: request for member 'reserve' in 'adj', which is of non-class type 'std::vector<int> [513]'
   18 |     adj.reserve(N+1);
      |         ^~~~~~~