import sys
input = sys.stdin.readline

H,W=map(int,input().split())
if 1 in [H,W]:
    print(0)
    exit()
ans=[1]*W
if H%2==0:
    if  W%2==0:
        print(H*W)
        for i in range(H):print(*ans)
    else:
        print(H*W-H)
        ans[0]=0
        for i in range(H):
            print(*ans)
else:
    if W%2==0:
        print(H*W-W)
        print(*[0]*W)
        for i in range(H-1):
            print(*ans)
    else:
        if H>W:
            print(H*W-H)
            for i in range(W):
                ans[i-1]=1
                ans[i]=0
                print(*ans)
            for i in range(H-W):
                print(*ans)
        else:
            print(H*W-W)
            for i in range(H-1):
                ans[i-1]=1
                ans[i]=0
                print(*ans)
            ans = [1]*(H-1)+[0]*(W-H+1)
            print(*ans)