H,W= map(int,input().split())
check = 0
if H % 2 == 1 and W % 2 == 0:
  H,W = W,H
  check = 1
print('Yes')
S = 1+H*W
count = 1
co = H*W
ans = [[0]*W for _ in range(H)]
if check:
  for i in range(H//2):
    for j in range(W):
      if j % 2 == 0:
        ans[2*i][j] = count
        ans[2*i+1][j] = co
        count += 1
        co -= 1
      else:
        ans[2*i][j] = co
        ans[2*i+1][j] = count
        count += 1
        co -= 1

  if H % 2 == 1:
    D = ans[-2][0]+ans[-2][1]
    ans[-1][0] = count
    for j in range(1,W):
      if j % 2 == 0:

        ans[-1][j] = D-ans[-1][j-1] 
      else:
        ans[-1][j] = D-ans[-1][j-1]-2
  answer = [[0]*H for _ in range(W)]
  for w in range(W):
    for h in range(H):
      answer[w][h] = ans[h][w]
    print(*answer[w])
  exit()



for i in range(H//2):
  for j in range(W):
    if j % 2 == 0:
      ans[2*i][j] = count
      ans[2*i+1][j] = co
      count += 1
      co -= 1
    else:
      ans[2*i][j] = co
      ans[2*i+1][j] = count
      count += 1
      co -= 1
  print(*ans[2*i])
  print(*ans[2*i+1])
if H % 2 == 1:
  D = ans[-2][0]+ans[-2][1]
  ans[-1][0] = count
  for j in range(1,W):
    if j % 2 == 0:
      
      ans[-1][j] = D-ans[-1][j-1] 
    else:
      ans[-1][j] = D-ans[-1][j-1]-2
  print(*ans[-1])