#include <bits/stdc++.h>

using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        string s;
        cin >> s;
        cout << (count(s.begin(), s.end(), 'B') * 2 == s.size() ?
                 "YES\n" : "NO\n");
    }
}

#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        vector<int> a(n);
        vector<pii> actions;
        for (int i = 0; i < n; i++)
            cin >> a[i];

        for (int i = 0; i < n - 1; i++) {
            int min_pos = i;
            for (int j = i + 1; j < n; j++)
                if (a[j] < a[min_pos])
                    min_pos = j;

            if (min_pos > i) {
                actions.push_back({l, min_pos});
                int opt = a[min_pos];
                for (int j = min_pos; j > i; j--)
                    a[j] = a[j - 1];
                a[i] = opt;
            }
        }

        cout << actions.size() << '\n';
        for (auto &lr: actions) {
            cout << lr.first + 1 << ' ' << lr.second + 1 << lr.second - lr.first << '\n';
        }
    }

}

#include <bits/stdc++.h>

using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n, m, k;
        cin >> n >> m >> k;
        vector<vector<int>> status(n, vector<int>(m, 0));
        for (int i = 0; i < n; i++) {
            string s;
            cin >> s;
            for (int j = 0; j < m; j++)
                if (s[j] == '*')
                    status[i][j] = 1;
        }
        for (int i = n - 1; i > -1; i--) {
            for (int j = 0; j < m; j++) {
                if (status[i][j] == 0)
                    continue;
                int len = 0;
                while (j > len && j + len + 1 < m && i > len) {
                    if (status[i - len - 1][j - len - 1] == 0 || status[i - len - 1][j + len + 1] == 0)
                        break;
                    len++;
                }
                if (len >= k) {
                    for (int d = 0; d <= len; d++) {
                        status[i - d][j - d] = 2;
                        status[i - d][j + d] = 2;
                    }
                }
            }
        }
        bool ok = true;
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                if (status[i][j] == 1)
                    ok = false;

        cout << (ok ? "YES" : "NO") << '\n';
    }
}

#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        auto cmp = [](pii const &x, pii const &y) {
            return x > y;
        };
        set<pii, decltype(cmp)> a(cmp);
        vector<pii> answer;
        for (int i = 0; i < n; i++) {
            int ai;
            cin >> ai;
            if (ai > 0)
                a.emplace(ai, i + 1);
        }
        while (a.size() > 1) {
            auto p1 = *a.begin();
            a.erase(a.begin());
            auto p2 = *a.begin();
            a.erase(a.begin());
            answer.emplace_back(p1.second, p2.second);
            if (p1.first > 1) a.emplace(p1.first - 1, p1.second);
            if (p2.first > 1) a.emplace(p2.first - 1, p2.second);
        }
        cout << answer.size() << '\n';
        for (auto &p : answer) {
            cout << p.first << ' ' << p.second << '\n';
        }
    }
}

#include <bits/stdc++.h>

using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n, a;
        cin >> n;
        deque<int> d;
        for (int i = 0; i < n; i++) {
            cin >> a;
            if (d.empty() || a < d[0])
                d.push_front(a);
            else
                d.push_back(a);
        }
        for (int x : d)
            cout << x << ' ';
        cout << '\n';
    }
}

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef pair<int, int> node;
typedef tree<node, null_type, less<node>,
            rb_tree_tag, tree_order_statistics_node_update> ordered_set;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        ordered_set s;
        long long cnt = 0;
        for (int i = 0; i < n; i++) {
            int a;
            cin >> a;
            int less = s.order_of_key(node(a, 0)),
                    greater = i - s.order_of_key(node(a, n));
            cnt += min(less, greater);
            s.insert(node(a, i));
        }
        cout << cnt << '\n';
    }
}

#include <bits/stdc++.h>

using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n, d;
        cin >> n >> d;
        vector<int> a(n);
        for (int i = 0; i < n; i++)
            cin >> a[i];
        vector<bool> used(n, false);
        bool fail = false;
        int res = 0;
        for (int i = 0; i < n; i++) {
            if (used[i])
                continue;
            int cur = i, pref = 0, last = 0, iter = 0, ans = 0;
            do {
                used[cur] = true;
                if (a[cur] == 0) {
                    ans = max(ans, last);
                    last = 0;
                } else {
                    last++;
                    if (iter == pref) {
                        pref++;
                    }
                }
                cur = (cur + d) % n;
                iter++;
            } while (cur != i);
            if (iter != pref)
                ans = max(ans, pref + last);
            else {
                fail = true;
                break;
            }
            res = max(res, ans);
        }
        if (fail)
            cout << "-1\n";
        else
            cout << res << '\n';
    }
}

#include <bits/stdc++.h>

using namespace std;

const int INF = 1000000000;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        vector<int> a(n);
        int maxl = 0;
        for (int i = 0; i < n; i++) {
            cin >> a[i];
            maxl = max(maxl, a[i]);
        }
        vector<vector<int>> dp(n + 1, vector<int>(2 * maxl + 1, INF));
        dp[0][0] = 0;
        for (int i = 0; i < n; i++) {
            for (int left = 0; left <= 2 * maxl; left++) {
                if (dp[i][left] == INF)
                    continue;
                dp[i + 1][max(left - a[i], 0)] = min(dp[i + 1][max(left - a[i], 0)], dp[i][left] + a[i]);
                if (left + a[i] < dp[i + 1].size()) {
                    dp[i + 1][left + a[i]] = min(dp[i + 1][left + a[i]], max(dp[i][left] - a[i], 0));
                }
            }
        }

        int ans = 2 * maxl + 1;
        for (int left = 0; left <= 2 * maxl; left++)
            ans = min(ans, left + dp[n][left]);
        cout << ans << '\n';
    }
}