#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
const int N = 1e5+5;

int main(){
    int n , m;
    cin >> n >> m;
    if(n >= 2*m){
        for(int i = 1;i <= 2*m;i++){
            for(int j = 1 ; j <= m ;j++){
                if(ceil(i*1.0 / 2) == m-j+1){
                    cout << fixed << setprecision(10) << 1.0000000000 << " ";
                }
                else cout << fixed << setprecision(10) << 0.0000000000 << " ";
            }
            cout << "\n";
        }
        if(n - 2*m){
            for(int i=1; i<= n - 2*m ;i++){
                    cout << fixed << setprecision(10) << 1.0000000000 << " ";
                for(int j = 1 ;j<=m-1 ;j++){
                     cout << fixed << setprecision(10) << 0.0000000000 << " ";
                }
                cout << "\n";
            }
        }
    }
    else{
        for(int i = 1;i <= n;i++){
            for(int j = 1 ; j <= m ;j++){
                   // cerr << i/2 << " ";
                if(ceil(i*1.0 / 2) == m-j+1){
                    cout << fixed << setprecision(10) << 1.0000000000 << " ";
                }
                else cout << fixed << setprecision(10) << 0.0000000000 << " ";
            }
            cout << "\n";
        }
    }
    return 0;
}