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c_cpp
a year ago
666 B
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#include <bits/stdc++.h>
using namespace std;

bool solve() {
    int n;
    cin >> n;
    string s;
    cin >> s;
    vector<int> t, m;
    for(int i = 0; i < n; i++) {
        if(s[i] == 'T')
            t.push_back(i);
        else
            m.push_back(i);
    }
    if(t.size() != 2 * m.size())
        return false;
    for(int i = 0; i < m.size(); i++) {
        if(m[i] < t[i] || m[i] > t[i + m.size()])
            return false;
    }
    return true;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int t;
    cin >> t;
    while(t--) {
        cout << (solve() ? "YES" : "NO") << '\n';
    }
}
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