/* Problem URL: https://codeforces.com/problemset/problem/1945/E */ #include #include #include using namespace std; using namespace __gnu_pbds; template > using ordered_set = tree; #define V vector #define rmin(a, b) a = min(a, b) #define rmax(a, b) a = max(a, b) #define rep(i, lim) for (int i = 0; i < (lim); i++) #define nrep(i, s, lim) for (int i = s; i < (lim); i++) #define repv(i, v) for (auto &i : (v)) #define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; } #define sortv(v) sort(v.begin(), v.end()) #define all(v) (v).begin(), (v).end() using vi = vector; using vvi = vector; using vvvi = vector; using vvvvi = vector; using ll = long long; using vl = vector; using vvl = vector; using vvvl = vector; using vvvvl = vector; template auto operator<<(ostream &os, const vector &vec)->ostream& { os << vec[0]; for (size_t i = 1; i < vec.size(); i++) { os << ' ' << vec[i]; } os << '\n'; return os; } template auto operator>>(istream &is, vector &vec)->istream& { for (auto &i : vec) { is >> i; } return is; } template auto operator<<(ostream &os, const vector> &vec)->ostream& { for (auto &i : vec) { os << i[0]; for (size_t j = 1; j < i.size(); j++) { os << ' ' << i[j]; } os << '\n'; } return os; } template auto operator>>(istream &is, vector> &vec)->istream& { for (auto &i : vec) { for (auto &j : i) { is >> j; } } return is; } const int oo = INT32_MAX >> 1; const ll OO = INT64_MAX >> 1; void pre() { } #define TEST 1 void solve() { int n, m; cin >> n >> m; vi p(n); cin >> p; set used; int t = -1; int l = 1; int r = n + 1; while (r - l > 1) { int mid = (l + r) >> 1; used.insert(mid - 1); if (p[mid - 1] == m) { t = mid - 1; } if (p[mid - 1] <= m) { l = mid; continue; } r = mid; } if (p[l - 1] == m) { cout << "0\n"; return; } V> ans; rep(i, n) { if (p[i] == m) { ans.emplace_back(i + 1, l); break; } } if (t != -1) { rep(i, n) { if (used.count(i) || p[i] > m) { continue; } ans.emplace_back(i + 1, t + 1); break; } } cout << ans.size() << '\n'; repv(i, ans) { cout << i.first << ' ' << i.second << '\n'; } } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); pre(); int t; (TEST && cin >> t) || (t = 1); while (t--) { solve(); } }