/** * @FileName a.cpp * @Author kanpurin * @Created 2020.05.22 16:08:41 **/ // H(0,0) = 1 #include "bits/stdc++.h" using namespace std; typedef long long ll; constexpr int MOD = 1e9 + 7; struct mint { private: long long x; public: mint(long long x = 0) :x((MOD+x)%MOD) {} mint(std::string &s) { long long z = 0; for (int i = 0; i < s.size(); i++) { z *= 10; z += s[i] - '0'; z %= MOD; } this->x = z; } mint& operator+=(const mint &a) { if ((x += a.x) >= MOD) x -= MOD; return *this; } mint& operator-=(const mint &a) { if ((x += MOD - a.x) >= MOD) x -= MOD; return *this; } mint& operator*=(const mint &a) { (x *= a.x) %= MOD; return *this; } mint& operator/=(const mint &a) { long long n = MOD - 2; mint u = 1, b = a; while (n > 0) { if (n & 1) { u *= b; } b *= b; n >>= 1; } return *this *= u; } mint operator+(const mint &a) const { mint res(*this); return res += a; } mint operator-(const mint &a) const { mint res(*this); return res -= a; } mint operator*(const mint &a) const { mint res(*this); return res *= a; } mint operator/(const mint &a) const { mint res(*this); return res /= a; } friend std::ostream& operator<<(std::ostream &os, const mint &n) { return os << n.x; } bool operator==(const mint &a) const { return this->x == a.x; } }; // comb (前計算O(NlogMOD) クエリO(1)) struct Combination { private: int N; // pow mint pow(mint k, ll n) { mint res = 1; while (n > 0) { if (n & 1) { res *= k; } k *= k; n >>= 1; } return res; } public: vector< mint > FACT, IFACT; // nCk Combination(int n) : N(n) { FACT.resize(n + 1); IFACT.resize(n + 1); FACT[0] = 1; IFACT[0] = 1; for (int i = 1; i <= n; i++) { FACT[i] = FACT[i - 1] * i; IFACT[i] = pow(FACT[i], MOD - 2); } } mint comb(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]; } }; pair input(string s) { pair res = {0,0}; bool fst = true; for (int i = 2; i < s.size(); i++) { if (s[i] >= '0' && s[i] <= '9' && fst) { res.first *= 10; res.first += s[i] - '0'; } else if (s[i] == ',') { fst = false; } else if (s[i] >= '0' && s[i] <= '9') { res.second *= 10; res.second += s[i] - '0'; } } return res; } int main() { int t;cin >> t; Combination cmb(2000000); for (int i = 0; i < t; i++) { string s;cin >> s; auto p = input(s); if (s[0] == 'C') { cout << cmb.comb(p.first,p.second) << endl; } else if (s[0] == 'P') { cout << cmb.comb(p.first,p.second) * cmb.FACT[p.second] << endl; } else { cout << cmb.comb(max(0,p.first+p.second-1),p.second) << endl; } } return 0; }