Submission #399722

#	Time	Username	Problem	Language	Result	Execution time	Memory
399722		A_D	Fun Tour (APIO20_fun)	C++14	Compilation error	0 ms	0 KiB

fun

#include <bits/stdc++.h>
using namespace std;
const int N=5011;
set<int> g[N];
int n,uu;
int d;
void dfs(int u,int p,int dep)
{
    if(dep>d){
        d=dep;
        uu=u;
    }
    for(auto x:g[u]){
        if(x==p)continue;
        dfs(x,u,dep+1);
    }
}
std::vector<int> createFunTour(int N, int Q) {
    //int H = hoursRequired(0, N - 1);
    //int A = attractionsBehind(0, N - 1);
    return std::vector<int>(N);
    n=N;
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            int h=hoursRequired(i, j);
            if(h==1){
                g[i].insert(j);
                g[j].insert(i);
            }
        }
    }
    vector<int> ret;
    d=0;
    dfs(uu,uu,0);
    while(g[uu].empty()==0){
        d=0;
        int v=uu;
        ret.push_back(v);
        dfs(uu,uu,0);
        int x=*g[v].begin();
        g[v].erase(x);
        g[x].erase(v);
    }
    return ret;
}

Compilation message (stderr)

fun.cpp: In function 'std::vector<int> createFunTour(int, int)':
fun.cpp:25:19: error: 'hoursRequired' was not declared in this scope
   25 |             int h=hoursRequired(i, j);
      |                   ^~~~~~~~~~~~~