Submission #525128

#	Time	Username	Problem	Language	Result	Execution time	Memory
525128		Ahmed57	Table Tennis (info1cup20_tabletennis)	C++14	87 / 100	3070 ms	5456 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
vector<int>ans;
int rec(int l,int r,int arr[],int sum,int k){
    int p = 0;
    vector<int> v;
    while(l<=r){
        if(arr[l]+arr[r]>sum){
            r--;
            p++;
        }else if(arr[l]+arr[r]<sum){
            l++;
            p++;
        }else{
            v.push_back(arr[l]);
            v.push_back(arr[r]);
            l++;
            r--;
        }
    }
    if(p==k){
        ans = v;
        return 1;
    }else{
        return 0;
    }
}
int main(){
    long long n,k;
    cin>>n>>k;
    int arr[n+k];
    for(int i = 0;i<n+k;i++)cin>>arr[i];
    sort(arr,arr+n+k);
    for(int i = 0;i<=k;i++){
        for(int j = (n+k)-1;j>i;j--){
            if(i+(((n+k)-1)-j)<=k){
                //cout<<i<<" "<<j<<"\n";
                int q = rec(0,(n+k)-1,arr,arr[i]+arr[j],k);
                if(q){
                    sort(ans.begin(),ans.end());
                    for(auto h:ans){
                        cout<<h<<" ";
                    }
                    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: 0 / 13