Submission #718297

#	Time	Username	Problem	Language	Result	Execution time	Memory
718297		MrM7md	Table Tennis (info1cup20_tabletennis)	C++17	100 / 100	290 ms	3572 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];
   // 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>sml,big;
         int l=i,r=sz-j-1;
         while(l<=r){
            if(l==r){
               cur++;
            }
            else if(a[l]+a[r]==ans){
               sml.pb(a[l]);
               big.pb(a[r]);
               l++;
               r--;
            }
            else if(a[l]+a[r]>ans){
               cur++;
               r--;
            }
            else{
               cur++;
               l++;
            }
            if(cur>k){
               cur=-1;
               break;
            }
         }
         if(cur==k){
            for(auto it:sml){
               cout<<it<<' ';
            }
            for(int i=big.size()-1;i>=0;i--)cout<<big[i]<<' ';
            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