#include<bits/stdc++.h>
//#pragma GCC optimize(3,"Ofast","inline")
using namespace std;
typedef long long ll;
typedef double db;
typedef unsigned long long  ull;
typedef pair<int,int> pii;
typedef pair<db,db> pdd;
typedef pair<ll,ll> pll;
void init();
void debug();
#define Clear(a)  memset(a,0,sizeof(a))
#define pb(x) push_back(x)
 
#define INF 1e9+10
const int N = 1e6+10;
const int M = 13210;
const int maxn = 3e5 +10;
const ll mod = 1e9+7;

const bool IN_TEST = 1;
int v[N];



int main()
{
    int n,m;
    cin>>n>>m;

    if (n<m){
        for (int i=0; i<n; i++)
            v[i*m+i] = 1;
        
        for (int i=n+1; i<m; i+=2)
        {
            v[i] = 1;
        }

        if ((n-m) & 1) v[m-1] = 1;
    }
    else{
        for (int i=0; i<m; i++)
            v[i*m+i] = 1;
        
        for (int i=m+1; i<n; i+=2)
        {
            v[i*m] = 1;
        }
        if ((m-n) & 1) v[(n-1)*m] = 1;
    }

    int res=0;
    for (int i=0;i<n*m;i++) res+=v[i];

    cout<<res<<endl;
    for (int i=0; i<n*m;i++)
    {
        cout<<v[i]<<' ';
        if (i%m == m-1) cout<<endl;
    }
        

    return 0;
}