import std.stdio, std.array, std.string, std.conv, std.algorithm; import std.typecons, std.range, std.random, std.math, std.container; import std.numeric, std.bigint, core.bitop, core.stdc.stdio; void main() { immutable long MAX = 2*10^^6+1; immutable long MOD = 10^^9+7; auto modinv = new long[](MAX); modinv[0] = modinv[1] = 1; foreach(i; 2..MAX) { modinv[i] = modinv[MOD % i] * (MOD - MOD / i) % MOD; } auto f_mod = new long[](MAX); auto f_modinv = new long[](MAX); f_mod[0] = f_mod[1] = 1; f_modinv[0] = f_modinv[1] = 1; foreach(i; 2..MAX) { f_mod[i] = (i * f_mod[i-1]) % MOD; f_modinv[i] = (modinv[i] * f_modinv[i-1]) % MOD; } int T, N, K; char CPH; scanf("%d\n", &T); foreach(i; 0..T) { scanf("%c(%d,%d)\n", &CPH, &N, &K); if (CPH == 'C') { if (N < K) {writeln(0); continue;} writeln(f_mod[N] * f_modinv[N-K] % MOD * f_modinv[K] % MOD); } else if (CPH == 'P') { if (N < K) {writeln(0); continue;} writeln(f_mod[N] * f_modinv[N-K] % MOD); } else { if (N < 1 || K < 1) writeln(0); writeln(f_mod[N+K-1] * f_modinv[N-1] % MOD * f_modinv[K] % MOD); } } }