import std.stdio; import std.array; import std.string; import std.conv; import std.algorithm; import std.typecons; import std.range; import std.random; import std.math; import std.container; import std.numeric; import std.bigint; import core.bitop; void main() { long MOD = 10^^9+7; auto s = readln.split.map!(to!int).array; auto N = s[0]; auto K = s[1]; auto f = new long[](N+1); f[0] = 1; f[1] = 1; foreach (i; 2..N+1) f[i] = f[i-1] * i % MOD; if (K == 0) { writeln(f[N]); return; } auto A = readln.split.map!(to!long).array.sort().array; foreach (i; 0..K) foreach (j; i+1..K) if ((A[i] & A[j]) != A[i]) { writeln(0); return; } long ans = 1; int cnt = 0; foreach (a; A) { (ans *= f[a.popcnt - cnt]) %= MOD; cnt = a.popcnt; } writeln(ans * f[N - cnt] % MOD); }