import std;

void main() {
    auto input = readln.split.to!(long[]);
    auto N = input[0], H = input[1];
    if (H == 1) {
        writeln("YES");
        return;
    }
    auto A = readln.split.to!(long[]);

    if (A.count!"a == 0" > 0) {
        writeln("NO");
        return;
    }

    if (A.count!(a => a % H == 0) > 0) {
        writeln("YES");
        return;
    }
    writeln("NO");
}