import std.stdio;
import std.conv;
import std.string;
import std.math;
import std.random;
import std.range;
import std.algorithm;
import std.functional;
import core.bitop;
import std.bigint;
import std.typecons;
import std.container;

void main() {
    auto input = readln.split.to!(ulong[]);
    auto N = input[0], H = input[1];
    auto A = readln.split.to!(ulong[]);

    writeln(A.fold!"a * b" % H == 0 ? "YES" : "NO");
}