Submission #365968

#	Time	Username	Problem	Language	Result	Execution time	Memory
365968		aihay	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	89 ms	4452 KiB

tabletennis

#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize("-Ofast")
#include <bits/stdc++.h>
using namespace std;

typedef int in;
#define int long long
#define f first
#define s second
#define pb push_back
#define pp push
#define ceil(x) NEVER USE CEIL
#define sqrt(x) (int)(sqrt(x))
const int MAX=1e7;
const int MOD=1e9+7;
const int MAAX=1e18;

vector<int>v;
int arr[150410],n,k;
bool fun(int l,int r,int x,int sum){
    int s=l,e=r;
    v.clear();
    while((e-s+1)>sum){
        if(arr[s]+arr[e]==x){
            v.pb(arr[s]);
            v.pb(arr[e]);
            s++,e--;
        }
        else if(arr[s]+arr[e]>x&&sum>0){
            e--,sum--;
        }
        else if(sum>0){
            s++,sum--;
        }
        else
            return 0;
    }
    return 1;
}
in main()
{
    iostream::sync_with_stdio(0);
    int tc=1;
    //cin>>tc;
    while(tc--){
        cin>>n>>k;
        for(int i=0;i<n+k;i++)
            cin>>arr[i];
        for(int i=0;i<n+k;i++){
            for(int l=n+k-1;l>=n-1+i;l--){
                if(fun(i+1,l-1,arr[i]+arr[l],k-((n+k-1)-l+i))){
                    v.pb(arr[i]);
                    v.pb(arr[l]);
                    sort(v.begin(),v.end());
                    for(int i=0;i<n;i++)
                        cout<<v[i]<<" ";
                    return 0;
                }
            }
        }
    }
    return 0;
}

• 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