H,W= map(int,input().split())
print('Yes')
K = [i for i in range(1,H*W+1)]
S = 1+H*W
count = 1
co = H*W
ans = [[0]*W for _ in range(H)]
ans[0][0] = 1
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])