w_max = 1000
n, k = map(int, input().split())
if k == 1 or k == n - 1: exit(print("No"))
if k == 2:
    if n % 2: exit(print("No"))
    print("Yes")
    for i in range(n - 1):
        if i % 2: print(i + 1, i + 2, -w_max)
        else: print(i + 1, i + 2, w_max - 1)
    exit()
if k == 3 and n == 5:
    print("Yes")
    print(1, 2, -2)
    print(2, 3, -1)
    print(3, 4, 2)
    print(3, 5, 2)
    exit()
if k == n - 2:
    print("Yes")
    for i in range(k - 1):
        print(i + 1, i + 2, 1)
    print(k, k + 1, -k)
    print(3, n, 2)
    exit()
if 3 <= k <= n - 3:
    print("Yes")
    for i in range(k - 2):
        print(i + 1, i + 2, 1)
    print(k - 1, k, -k)
    for i in range(n - k):
        print(k, k + i + 1, 1)
    exit()