Submission #1118764

#	Time	Username	Problem	Language	Result	Execution time	Memory
1118764		ElayV13	Table Tennis (info1cup20_tabletennis)	C++17	24 / 100	407 ms	52732 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ld double

const int INF = 1e18;
const int mod = 1e9 + 7;

signed main()
{
   ios_base::sync_with_stdio(0);
   cin.tie(0);
   int n , k;
   cin >> n >> k;
   vector < int > a(n + k);
   unordered_map < int , int > m;
   for(int i = 0;i < n + k;i++)
   {
       cin >> a[i];
       m[a[i]]++;
   }
   vector < pair < int , int > > p;
   map < int , int > cnt;
   for(int i = 0;i < min(n + k , 5000LL) - 1;i++)
   {
       for(int j = i + 1;j < min(n + k , 1000LL);j++)
       {
           cnt[a[i] + a[j]]++;
           p.push_back({cnt[a[i] + a[j]],a[i] + a[j]});
       }
   }
   sort(p.begin() , p.end());
   int ls = p[p.size() - 1].second;
   vector < int > ans;
   for(int i = 0;i < n + k;i++)
   {
       if(ans.size() == n) break;
       if(m[ls - a[i]] > 0)
       {
           ans.push_back(a[i]);
           ans.push_back(ls - a[i]);
       }
   }
   sort(ans.begin() , ans.end());
   for(int i : ans) cout << i << ' ';
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:38:22: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   38 |        if(ans.size() == n) break;
      |           ~~~~~~~~~~~^~~~

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