#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);
 
	//ここで2次元配列の動的確保をする
mat = (int **)malloc(sizeof(int *) * a);
 
// 2. 各行に対して列方向のメモリを確保
for(i = 0; i < a; i++){
    mat[i] = (int *)malloc(sizeof(int) * b);
}
 
// 3. 値の代入と表示
int count = 1;
for(i = 0; i < a; i++){
    for(j = 0; j < b; j++){
        mat[i][j] = count++;
        printf("%d ", mat[i][j]);
    }
    printf("\n");
}
 
// 4. 後始末（free）
for(i = 0; i < a; i++) free(mat[i]);
free(mat);
 
 
 
    //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？
 
 
    return 0;
}
 

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