给定一个字符串，能否最多删除一段连续的一段使得剩下的为“2020”

#include<iostream>
#include<cstring>
#include<map>
#include<stack>
#include<queue>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<string.h>
using namespace std;
typedef long long ll;
const int maxn=2e4+10;
const int inf=99999999;
int a[maxn];
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        string s;
        cin>>s;
        int le=s.length();
        if(s=="2020")
        {
            cout<<"YES"<<endl;
        }
        else
        {
            if(s[0]=='2'&&s[1]=='0'&&s[2]=='2'&&s[3]=='0')
            {
                cout<<"YES"<<endl;
            }
            else if(s[0]=='2'&&s[1]=='0'&&s[2]=='2'&&s[le-1]=='0')
            {
                cout<<"YES"<<endl;
            }
            else if(s[0]=='2'&&s[1]=='0'&&s[le-2]=='2'&&s[le-1]=='0')
            {
                cout<<"YES"<<endl;
            }
            else if(s[0]=='2'&&s[le-3]=='0'&&s[le-2]=='2'&&s[le-1]=='0')
            {
                cout<<"YES"<<endl;
            }
            else if(s[le-4]=='2'&&s[le-3]=='0'&&s[le-2]=='2'&&s[le-1]=='0')
            {
                cout<<"YES"<<endl;
            }
            else 
                cout<<"NO"<<endl;
        }
    }
}