#include using namespace std; #define rep(i,n) REP(i,0,n) #define REP(i,s,e) for(int i=(s); i<(int)(e); i++) #define repr(i, n) REPR(i, n, 0) #define REPR(i, s, e) for(int i=(int)(s-1); i>=(int)(e); i--) #define all(r) r.begin(),r.end() #define rall(r) r.rbegin(),r.rend() typedef long long ll; typedef vector vi; typedef vector vl; const ll INF = 1e18; const ll MOD = 1e9 + 7; template T chmax(T& a, const T& b){return a = (a > b ? a : b);} template T chmin(T& a, const T& b){return a = (a < b ? a : b);} template T pow_fast(T x, U n) { T ret = (T)1; while(n) { if(n & (U)1) ret *= x; x *= x; n >>= 1; } return ret; } template struct ModInt { ModType val; ModInt() : val(0) {} ModInt(ModType x) : val(x % MOD) { if(val < 0) val += MOD; }; operator ModType() const { return val; } ModInt &operator+=(const ModInt &m) { val += m.val; if(val >= MOD) val -= MOD; return *this; } ModInt &operator-=(const ModInt &m) { val -= m.val; if(val < 0) val += MOD; return *this; } ModInt &operator*=(const ModInt &m) { (val *= m.val) %= MOD; return *this; } ModInt &operator/=(const ModInt &m) { *this *= m.inverse(); return *this; } ModInt operator+(const ModInt &m) const { return ModInt(*this) += m; } ModInt operator-(const ModInt &m) const { return ModInt(*this) -= m; } ModInt operator*(const ModInt &m) const { return ModInt(*this) *= m; } ModInt operator/(const ModInt &m) const { return ModInt(*this) /= m; } ModInt inverse() const { return pow_fast(*this, MOD - 2); } ModInt pow(ModType n) const {return pow_fast(*this, n); } friend std::ostream &operator<<(std::ostream &os, const ModInt &rhs) { os << rhs.val; return os; } friend std::istream &operator>>(std::istream &is, ModInt &rhs) { ModType value; is >> value; rhs = ModInt(value); return is; } }; template struct Comb { vector fact; vector ifact; const int N; Comb(int n) : N(n + 1), fact(n + 1), ifact(n + 1) { makeFact(); } void makeFact() { fact[0] = ifact[0] = 1LL; for(int i = 1; i < N; i++) { fact[i] = fact[i - 1] * (mint)i; ifact[i] = fact[i].inverse(); } } mint operator()(int n, int r) { if(n < 0 || r < 0 || r > n) return 0; if(r > n / 2) r = n - r; return fact[n] * ifact[n - r] * ifact[r]; } mint perm(int n, int r) { if(n < r) return 0; return fact[n] * ifact[n-r]; } }; using mint = ModInt; vector split(const string& s, char c = ' ') { vector ret; stringstream ss(s); string t; while (getline(ss, t, c)) { ret.emplace_back(t); } return ret; } int main(){ cin.tie(0); ios::sync_with_stdio(false); int t; cin >> t; Comb cmb(3e6+10); rep(i, t) { string s; cin >> s; char c = s[0]; s = s.substr(2); s.pop_back(); auto v = split(s, ','); int a = stoi(v[0].c_str()); int b = stoi(v[1].c_str()); // cout << i << " " << c << " " << a << " " << b << '\n' << flush; mint ans; if(c == 'C') ans = cmb(a, b); else if(c == 'P') ans = cmb.perm(a, b); else ans = (a == 0 && b == 0 ? mint(1) : cmb(a+b-1, b)); cout << ans << '\n'; } return 0; }