Submission #342602

#	Time	Username	Problem	Language	Result	Execution time	Memory
342602		ogibogi2004	Table Tennis (info1cup20_tabletennis)	C++14	58 / 100	3092 ms	4584 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
const int MAXN=150002;
int n,k;
int a[MAXN];
set<int>checked_sums;
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);cout.tie(NULL);
	cin>>n>>k;
	for(int i=1;i<=n+k;i++)
	{
		cin>>a[i];
	}
	sort(a,a+n);
	for(int i=1;i<=k+1&&i<=n+k;i++)
	{
		for(int j=n+k;i-1+(n+k-j)<=k&&j>i;j--)
		{
			int sum=a[i]+a[j];
			if(checked_sums.find(sum)!=checked_sums.end())continue;
			int l=i,r=j,cnt=0;
			for(;;)
			{
				if(l==r||l>r)break;
				if(a[l]+a[r]==sum)
				{
					++cnt;++l;--r;
				}
				else
				{
					if(a[l]+a[r]>sum)--r;
					else ++l;
				}
			}
			if(cnt>=n/2)
			{
				vector<int>v;
				l=i,r=j;
				for(;;)
				{
					if(l==r||l>r)break;
					if(v.size()==n)break;
					if(a[l]+a[r]==sum)
					{
						v.push_back(a[l]);
						v.push_back(a[r]);
						l++;
						r--;
					}
					else
					{
						if(a[l]+a[r]>sum)r--;
						else l++;
					}
				}
				sort(v.begin(),v.end());
				for(int xd=0;xd<n;xd++)cout<<v[xd]<<" ";
				cout<<endl;
				return 0;
			}
			checked_sums.insert(sum);
		}
	}
return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:44:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   44 |      if(v.size()==n)break;
      |         ~~~~~~~~^~~

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 0 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13