Submission #844016

#	Time	Username	Problem	Language	Result	Execution time	Memory
844016		LucaIlie	Longest Trip (IOI23_longesttrip)	C++17	15 / 100	783 ms	592 KiB

longesttrip

#include "longesttrip.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 256;
int vis[MAX_N];
vector<pair<int, int>> pairs;
vector<int> ans;

vector<int> longest_trip( int n, int d ) {
    ans.clear();
    pairs.clear();
    for ( int u = 0; u < n; u++ )
        vis[u] = false;

    for ( int u = 0; u < n; u++ ) {
        for ( int v = u + 1; v < n; v++ ) {
            int x = are_connected( { u }, { v } );
            if ( !x ) {
                pairs.push_back( { u, v } );
                if ( vis[u] || vis[v] )
                    exit( 1 );
                vis[u] = vis[v] = true;
            }
        }
    }

    for ( int i = 0; i < pairs.size(); i++ )
        ans.push_back( pairs[i].first );
    for ( int u = 0; u < n; u++ ) {
        if ( !vis[u] )
            ans.push_back( u );
    }
    if ( n == 2 && pairs.size() == 1 )
        return ans;
    for ( int i = 0; i < pairs.size(); i++ )
        ans.push_back( pairs[i].second );

    return ans;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:29:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for ( int i = 0; i < pairs.size(); i++ )
      |                      ~~^~~~~~~~~~~~~~
longesttrip.cpp:37:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for ( int i = 0; i < pairs.size(); i++ )
      |                      ~~^~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 60