import math
N, M = map(int, input().split())
if M < N - 1:
    print('NO')
    exit()    
if N % 2 == 0:
    if M > (N // 2) ** 2:
        print('NO')
        exit()
else:
    if M > (N // 2) * (N // 2 + 1):
        print('NO')
        exit()

print('YES')
for i in range(N):
    print(i + 1, end=' ')
print()
small = list(range(1, math.ceil(N / 2) + 1))
big = list(range(math.ceil(N / 2) + 1, N + 1))
count = 0
flg = True
s = 0
b = 0
while count < M:
    if flg:
        for n in big[b:]:
            print(str(small[s]) + ' ' + str(n))
            count += 1
            if count >= M:
                exit()
        s += 1
    else:
        for n in small[s:]:
            print(str(big[b]) + ' ' + str(n))
            count += 1
            if count >= M:
                exit()
        b += 1             
    flg = not(flg)