#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 memError(int* mat) {
	if (mat==NULL) {
    	printf("ERROR: failed to secure memory.\n");
    	return 1;
    }
    return 0;
}
 
int main(){
    int i,j,k;
    int a,b;
    int **mat;
    scanf("%d %d",&a,&b);
 
	//ここで2次元配列の動的確保をする
    mat = (int **)malloc(sizeof(int*)*a);
    if(memError(mat)) return 1;
 
    for(k=0; k<a; k++) {
    	mat[k] = (int *)malloc(sizeof(int)*b);
    	if(memError(mat[k])) return 1;
    }
 
 
	//ここで2次元配列に数値を代入する
	int counter = 1;
	for(i=0;i<a;i++){
        for(j=0;j<b;j++){
            mat[i][j] = counter++;
        }
    }
 
    //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");
    }
 
    //さて，最後に忘れずにすることと言えば？
    for (i = 0; i < a; i++) {
        free(mat[i]);
    }
    free(mat);
 
    return 0;
}

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