Submission #1136013

#	Time	Username	Problem	Language	Result	Execution time	Memory
1136013		bpptidp	Table Tennis (info1cup20_tabletennis)	C++20	72 / 100	3095 ms	15844 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
using ll=long long;

const int N=1.5e5+505;
int a[N],n,k;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
 	
    cin>>n>>k;
    for(int i=0;i<n+k;++i)
    	cin>>a[i];

    unordered_map<int,int>occ;
    int x,c;

    for(int fi=0;fi<=k;++fi){
    	for(int se=max(0,fi+n-2);se<n+k;++se){
    		x=a[fi]+a[se];
    		for(int i=fi+1;i<se;++i)
    			++occ[a[i]];
    		c=2;
    		for(int i=fi+1;i<se;++i){
    			if(2*a[i]>x)break;
    			if(2*a[i]==x){
    				if(occ[a[i]]<2)continue;
    				c+=2;
    				occ[a[i]]-=2;
    			}else if(occ[x-a[i]]){
    				c+=2;
    				--occ[x-a[i]];
    				--occ[a[i]];
    			}
    		}
    		if(c>=n){
    			occ.clear();
    			for(int i=fi+1;i<se;++i)
    				occ[a[i]]++;
    			vector<int>v={a[fi],a[se]};
    			for(int i=fi+1;i<se;++i){
	    			if(2*a[i]>x)break;
	    			if(2*a[i]==x){
	    				if(occ[a[i]]<2)continue;
	    				v.push_back(a[i]);
	    				v.push_back(a[i]);
	    				occ[a[i]]-=2;
	    			}else if(occ[x-a[i]]){
	    				c+=2;
	    				v.push_back(a[i]);
	    				v.push_back(x-a[i]);
	    				--occ[x-a[i]];
	    				--occ[a[i]];
	    			}
	    		}
    			sort(v.begin(),v.end());
    			for(auto&x:v)
    				cout<<x<<' ';
    			return 0;
    		}
    		occ.clear();
    	}
    }

    assert(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: 0 / 15
• Subtask 8: 0 / 13