#include<iostream>
#include<cstdio>
#include<bits/stdc++.h>
using namespace std;

#define int long long

int dp[2010][2010];

signed main()
{
	int m, n;
	cin>>m>>n;
	
	dp[1][1] = 1;
	
	for(int i = 1;i <= m;i++)
	{
		for(int j = 1;j <= n;j++)
		{			
			if(i == 1 && j == 1){
				cout<<dp[i][j]<<" ";
				continue;
			}
			
			dp[i][j] = dp[i - 1][j] + dp[i][j - 1];
			
			cout<<dp[i][j]<<" ";
		}
		
		cout<<endl;
	}
	
	cout<<dp[m][n];
	
	return 0;
}