题解

#include <iostream>
#include <cstring>
using namespace std;
int t;
int n,cnt = 0;
int flag = 0;
string s;
int main()
{
	cin >> t;
	while(t--)
    {
		cin>>n;
		cin>>s;
		flag = 0;
        cnt = 0;
		for(int i=0;i<n;i++)
        {
			if(cnt==0&&s[i]!='M'&&s[i]!='m')
            {
				if(s[i]=='e'||s[i]=='E')   cnt++;
				else
                {
					flag=1;
					break; 
				}
			}
			 if(cnt==1&&s[i]!='e'&&s[i]!='E')
            {
				if(s[i]=='o'||s[i]=='O')cnt++;
				else
                {
					flag=1;
					break; 
				}
			}
			 if(cnt==2&&s[i]!='o'&&s[i]!='O')
            {
				if(s[i]=='W'||s[i]=='w')cnt++;
				else
                {
					flag=1;
					break; 
				}
			}
			 if(cnt==3&&s[i]!='w'&&s[i]!='W')
            {
				flag=1;
				break;
			}
            
		}
        
		if(cnt==3&&flag==0)
            cout<<"YES" << endl;
		else     cout<<"NO" << endl;
	}
	return 0;
}