Python

n,m=map(int,input().split())
a=[1]*n
for i in range (n):
    a[i]=[1]*m
for i in range(n):
    if i>0:
        a[i][0]=a[i-1][0]+1
        a[i][m-1]=a[i-1][m-1]+1
    if i%2==0:
        for j in range(m-1):
            a[i][j+1]=a[i][j]+1
    else:
        for j in range(m-1,0,-1):
            a[i][j-1]=a[i][j]+1
for i in range(n):
    for j in range(m):
        print(str(a[i][j]).rjust(4),end='')
    print()