求问，UKE是什么鬼

#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define PII pair<int,int>
using namespace std;

const int N=5e3+10;
int n,cnt,st[N];
ll v[N];



int main()
{
	cin>>n;
	v[0]=-1e18;
	v[n+1]=1e18;
	for(int i=1;i<=n;i++)
	{
		cin>>v[i];
	}
	for(int i=1;i<=n;i++)
	{
		if(v[i]>=v[i-1]) continue;
		if(v[i]+v[i-1]<v[i]+v[i+1])
		{
			v[i]+=v[i-1];
			st[i-1]=1;
			cnt++;
		}
		else
		{
			v[i]=v[i]+v[i+1];
			v[i+1]=v[i];
			cnt++;
			st[i]=1;
		}
	}
	cout<<n-cnt<<endl;
	for(int i=1;i<=n;i++)
	{
		if(st[i]) continue;
		cout<<v[i]<<" ";
	}
	return 0;
}











//___________________________________________________________