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

if k == 1 or k == n - 1:
    print("No")
elif k == 2 and n % 2 == 0:
    m = n - 1
    x = (m - 1) // 2 + 1
    edges = []
    for i in range(m):
        if i % 2 == 0:
            edges.append(x)
        else:
            edges.append(-(x + 1))
    print("Yes")
    for i in range(m):
        print(i + 1, i + 2, edges[i])
else:
    print("No")