n, k = map(int, input().split())
if k == 1:
    print('No')
elif k == 2:
    if n % 2 == 1:
        print('No')
    else:
        print('Yes')
        for i in range(n - 1):
            j = i + 1
            w = 10 ** 8 if i % 2 == 0 else -10 ** 8 - 1
            print(i + 1, j + 1, w)
elif k == 3:
    if k == n - 1:
        print('No')
    else:
        print('Yes')
        print(1, 2, -2)
        print(2, 3, -2)
        for i in range(4, n + 1):
            print(3, i, 3)
else:
    if k == n - 1:
        print('No')
    else:
        print('Yes')
        for i in range(k):
            j = i + 1
            print(i + 1, j + 1, -1)
        mid = k // 2
        for i in range(k + 1, n):
            print(mid + 1, i + 1, 10 ** 8)