Submission #692493

#	Time	Username	Problem	Language	Result	Execution time	Memory
692493		Ahmed_Solyman	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	142 ms	4524 KiB

tabletennis

#include <bits/stdc++.h>
#include <ext/rope>
 
using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define endl '\n'
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define sz size()
#define fil(arr,x) memset(arr,x,sizeof(arr))
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
    return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
    cout<<(x?"YES":"NO")<<endl;
}
int main()
{
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    fast
    int n,k;cin>>n>>k;
    vector<int>arr(n+k);
    for(auto &i:arr){
    	cin>>i;
    }
    for(int i=0;i<=k;i++){
    	for(int j=n-1;j<n+k;j++){
    		int s=arr[i]+arr[j];
    		vector<int>v;
    		int l=0,r=n+k-1;
    		int cnt=n;
    		while(l<r){
    			if(!cnt || r-l+1<cnt)break;
    			else if(arr[l]+arr[r]<s){
    				++l;
    			}
    			else if(arr[l]+arr[r]>s){
    				--r;
    			}
    			else{
    				v.pb(arr[l]);
    				v.pb(arr[r]);
    				++l;--r;
    				cnt-=2;
    			}
    		}
    		if(!cnt){
    			sort(all(v));
    			for(int g=0;g<n;g++){
    				cout<<v[g]<<" ";
    			}
    			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