N, K = map(int, input().split())

if K == N - 1 or K == 1 or (K == 2 and N % 2):
    print("No")
    exit()
elif K == N - 2:
    print("Yes")
    print(1, 2, 2)
    print(2, 3, -3)
    print(N - 1, N, 2)
    for i in range(3, N - 1):
        print(i, i + 1, 0)
elif K == 2 and not N % 2:
    MAX = 10 ** 9
    print("Yes")
    for i in range(1, N, 2):
        print(i, i + 1, MAX - 1)
    for i in range(2, N, 2):
        print(i, i + 1, -MAX)
else:
    print("Yes")
    print(1, 2, -2)
    for i in range(2, K):
        print(i, i + 1, 0)
    for i in range(K, N):
        print(1, i + 1, 1)