n, k = map(int, input().split())

if k != 2:
    print("No")
else:
    m_edges = n - 1
    if m_edges % 2 == 0:
        print("No")
    else:
        m = (m_edges - 1) // 2
        x = m + 1
        y = m + 2
        print("Yes")
        for i in range(m_edges):
            u = i + 1
            v = i + 2
            if i % 2 == 0:
                w = x
            else:
                w = -y
            print(u, v, w)