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; immutable long MOD = 998244353; void main() { auto s = readln.split.map!(to!int); auto N = s[0]; auto W = s[1].to!long; auto A = readln.split.map!(to!long).array; long ans = 0; foreach (mask; 0..1<> i) & 1) sm += A[i]; if (sm == W) ans += 1; foreach (i; 0..N) if ((mask >> i) & 1) { auto x = sm - A[i]/2; if (x == W) ans += 1; } } ans.writeln; }