Submission #205210

#	Time	Username	Problem	Language	Result	Execution time	Memory
205210		egekabas	Meetings (JOI19_meetings)	C++14	29 / 100	3080 ms	1484 KiB

meetings

#include <bits/stdc++.h>
#include "meetings.h"
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long   ll;
typedef unsigned long long   ull;
typedef long double ld;
typedef pair<ll, ll>    pll;
typedef pair<ull, ull>    pull;
typedef pair<int, int>  pii;
typedef pair<ld, ld>  pld;
int p[2009];
void calc(int root, vector<int> all){
    if(all.size() <= 1) return;
    for(auto it = all.begin(); it < all.end(); ++it)
        if(*it == root){
            all.erase(it);
            break;
        }
    vector<vector<int>> groups;
    for(auto u : all){
        int put = 0;
        for(auto &v : groups){
            if(Query(v.front(), u, root) != root){
                v.pb(u);
                put = 1;
                break;
            }
        }
        if(put == 0){
            groups.pb({u});
        }
    }
    for(auto v : groups){
        int nextroot = v[0];
        for(int i = 1; i < v.size(); ++i)
            if(v[i] != nextroot)
                nextroot = Query(root, nextroot, v[i]);
        p[nextroot] = root;
        calc(nextroot, v);
    }
}

void Solve(int n){
    vector<int> all;
    for(int i = 0; i < n; ++i)
        all.pb(i);
    calc(0, all);
    for(int i = 1; i < n; ++i)
        Bridge(min(i, p[i]), max(i, p[i]));
}

Compilation message (stderr)

meetings.cpp: In function 'void calc(int, std::vector<int>)':
meetings.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 1; i < v.size(); ++i)
                        ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 0 / 71