#include <stdio.h>
#include <stdlib.h>
 
//必要があれば変数などを追加してもOKです
 
int main(){
    int i,j,k;
    int a,b;
    int **mat;
    scanf("%d %d",&a,&b);
 
	mat=(int**)malloc(sizeof(int*)*2);
	for(k=0; k<b; k++)
{
	mat[k]=(int*)malloc(sizeof(int)*b);
											}
 
 
    for(i=0; i<a; i++)
{
	for(j=0; j<b; j++)
{
	mat[i][j]=k++;
								}
 
    }
    //以下の部分は表示の部分です
    //いじらなくてOK
    for(i=0;i<a;i++){
        for(j=0;j<b;j++){
            printf("%d ",mat[i][j]);
        }
        printf("\n");
    }
 
    for(k=0; k<b; k++)
{
	free(mat[k]);
						}
 
	free(mat);
 
 
    return 0;
}
 

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