Submission #366029

#	Time	Username	Problem	Language	Result	Execution time	Memory
366029		soba	Table Tennis (info1cup20_tabletennis)	C++14	72 / 100	3109 ms	340840 KiB

tabletennis

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
int main()
{
    ll n , k;
    cin >> n >> k ;
    ll teams=n/2;
    vector<ll>v;
    ll x , y ;
    n+=k;
    map<ll,int>mp;
    for(int i = 0 ; i < n ; i++)
    {
        cin >>  x;
        mp[x]++;
        v.push_back(x);
    }
    sort(v.begin(), v.end());
    vector<ll>poten;
    for(int i = 0 ; i< k+1 ; i++)
    {
        for( int j = n-1; j >= n-(k+1) ; j-- )
        {
            poten.push_back(v[i]+v[j]);
        }
    }
    int sz=poten.size();
    vector<ll>ansa;
    for( int i = 0 ; i  < sz ; i++)
    {
        ansa.clear();
        ll tmp=teams;
        for(int j = 0 ; v[j]<(poten[i]/2) ; j++ )
        {
            if(poten[i]-v[j]==v[j])continue;
            if(mp[poten[i]-v[j]])
            {
                tmp--;
                ansa.push_back(poten[i]-v[j]);
                ansa.push_back(v[j]);
            }
            if(tmp==0)
                break;
        }
        if(tmp==0)
        {
            break;
        }
    }
//    cout << ansa[0] << "\n";
//    cout << ansa.size() << "\n";
    sort( ansa.begin() , ansa.end());
    for(int i = 0 ; i < teams*2 ; i++)
    {
        cout << ansa[i] <<  " " ;
    }
    return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:11:12: warning: unused variable 'y' [-Wunused-variable]
   11 |     ll x , y ;
      |            ^

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13