Submission #717410

#	Time	Username	Problem	Language	Result	Execution time	Memory
717410		MrM7md	Table Tennis (info1cup20_tabletennis)	C++17	9 / 100	105 ms	13620 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);

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


}
/*

*/

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:32:18: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized]
   32 |          for(int i=i;i<=sz-j-1;i++){
      |                  ^

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