#include<bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ll long long
#define all(a) a.begin(),a.end()
#define endl '\n'

using namespace std;

const int N = 3e5 + 3;

int n;

void solve() {
    cin>>n;
    string s;
    cin>>s;
    int cnt_w=0,cnt_r=0;
    for (int i=0;i<n;++i){
        if (s[i]=='W')++cnt_w;
    }
    for (int i=n;i<2*n;++i){
        if (s[i]=='R')++cnt_r;
    }
    if (cnt_r%2!=0){
        cout<<"NO"<<endl;
        return ;
    }
    if (cnt_w%2!=0){
        cout<<"NO"<<endl;
        return ;
    }
    cout<<"YES"<<endl;
}

main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t;
    cin>>t;
    while(t--){
        solve();
    }
}