Submission #1347862

#	Time	Username	Problem	Language	Result	Execution time	Memory
1347862		titlewave	Easter Eggs (info1cup17_eastereggs)	C++20	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

vector<int> adj[510];
int tour[510],node[510],id;
void dfs(int u)
{
    tour[u]=++id;
    node[id]=u;
    for(auto &v:adj[u]) if(!tour[v]) dfs(v);
}
bool ask(int m)
{
    vector<int> v;
    for(int i=1;i<=m;i++) v.emplace_back(node[i]);
    return query(v);
}

int findEgg(int N,vector<pair<int,int>> bridges)
{
    for(int i=1;i<=N;i++) adj[i].clear();
    for(auto &[u,v]:bridges) adj[u].emplace_back(v), adj[v].emplace_back(u);
    id=0;
    dfs(1);
    int l=1;r=N;
    while(l<r){
        int m=(l+r)>>1;
        if(ask(m)) r=m;
        else l=m+1;
    }
    return node[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:26:13: error: 'r' was not declared in this scope
   26 |     int l=1;r=N;
      |             ^