题解

#include <iostream>
#include <cstring>
using namespace std;
int main() {
int t, n, a = 0, m = 0;
string s;
cin >> t;
while (t--) {
a = 0;
m = 0;
cin >> n;
cin >> s;
for (int i = 0; i < n; ++i) {
if (a == 0 && s[i] != 'M' && s[i] != 'm') {
if (s[i] == 'e' || s[i] == 'E') {
++a;
} else {
m = 1;
break;
}
}

		if (a == 1 && s[i] != 'e' && s[i] != 'E') {
			if (s[i] == 'o' || s[i] == 'O') {
                ++a;
			} else {
				m = 1;
				break; 
			}
		}
		
		if(a == 2 && s[i] != 'o' && s[i] != 'O') {
			if (s[i] == 'W' || s[i] == 'w') {
                ++a;
			} else {
				m = 1;
				break; 
			}
		}
		
		if (a == 3 && s[i] != 'w' && s[i] != 'W') {
			m = 1;
			break;
		}
	}
	
	if (a == 3 && m == 0) {
        cout << "YES" << endl;
	} else {
        cout << "NO" << endl;
	}

}


return 0;

}