Submission #436265

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
436265	2021-06-24T11:17:01 Z	LouayFarah	Library (JOI18_library)	C++14	Compilation error	0 ms	0 KB

library

#include "bits/stdc++.h"
#include "library.h"
 
using namespace std;
 
#define pb push_back
#define mp make_pair
#define fi first
#define se second

void Solve(int n)
{
    if(n==1)
    {
        vector<int> res(1);
        res[0] = 1;
        return res;
    }
    vector<pair<int, int>> arr;
    vector<int> m(n, 0);
    for(int i = 1; i<=n; i++)
    {
        for(int j = i+1; j<=n; j++)
        {
            m.assign(n, 0);
            m[i-1] = 1, m[j-1] = 1;
            int cnt = Query(m);
            if(cnt==2)
            {
                arr.pb(mp(i, j));
            }
        }
    }

    vector<int> adj[n+1];
    for(int i = 0; i<(int)arr.size(); i++)
    {
        adj[arr[i].fi].pb(arr[i].se);
        adj[arr[i].se].pb(arr[i].fi);
    }

    int beg = 1;
    for(int i = 1; i<=n; i++)
    {
        if((int)adj[i].size()==1)
        {
            beg = 1;
            break;
        }
    }

    vector<bool> visited(n+1, false);
    queue<int> q;

    q.push(beg);
    visited[beg] = true;

    vector<int> res;
    while(!q.empty())
    {
        int u = q.front();
        q.pop();

        res.pb(u);

        for(auto v: adj[u])
        {
            if(visited[v])
                continue;
            visited[v] = true;
            q.push(v);
        }
    }

    Answer(res);
}

Compilation message

library.cpp: In function 'void Solve(int)':
library.cpp:17:16: error: return-statement with a value, in function returning 'void' [-fpermissive]
   17 |         return res;
      |                ^~~