Submission #717420

#	Time	Username	Problem	Language	Result	Execution time	Memory
717420		MrM7md	Table Tennis (info1cup20_tabletennis)	C++17	100 / 100	2386 ms	224628 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
#define F first
#define S second
#define pb push_back
#define all(a) a.begin(),a.end()
const int N=1e5;
const int off=(1<<20);
const int MOD = 1e9+7;


signed main(){
   ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
   int n,k;
   cin >> n >> k;
   int sz=n+k;
   int a[sz];
   unordered_map<int,bool>mp;
   for(int i=0;i<sz;i++){
      cin >>a[i];
      mp[a[i]]=1;
   }
   // sort(a,a+sz);

   for(int i=0;i<=k;i++){
      for(int j=0;j<=k-i;j++){
         int ans=a[i]+a[sz-j-1];
         int cur=i+j;
         vector<int>v;
         for(int w=i;w<=sz-j-1;w++){
            if(a[w]!=ans-a[w]){
               if(!mp[ans-a[w]]){
                  if(cur<k&&cur>=0)cur++;
                  else cur=-1;
               }
               else v.pb(a[w]);
            }
            else{
               if(cur<k&&cur>=0)cur++;
               else cur=-1;
            }
            if(cur==-1)break;
         }
         if(cur==k){
            for(auto it:v){
               cout<<it<<' ';
            }
            return 0;
         }
         // cout<<v.back()<<' ';
      }
   }
   // cout<<v.size()<<endl;


}
/*

*/

• 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: 15 / 15
• Subtask 8: 13 / 13