#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=1;
    int a,b;
    int **mat;
    scanf("%d %d",&a,&b);//2,3で考える
 
	//ここで2次元配列の動的確保をする
 
    /*mat = (int**)malloc(sizeof(int)*a*b);*///この書き方だとダメだった
    //※列と行はそれぞれ動的確保の必要あり
 
    //行の動的確保
    mat = (int**)malloc(sizeof(int*) * a);//int** = int型のポインタのポインタ
    //エラーの処理
    if(mat == NULL){
        printf("ERROR\n");
        return 0;
    }
 
     //各行ごとに列の動的確保
    for(i=0;i<a;i++){
    mat[i] = (int*)malloc(sizeof(int) * b);
    //エラーの処理
    if(mat == NULL){
        printf("ERROR\n");
        return 0;
    }
    }
 
	//ここで2次元配列に数値を代入する
	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");
    }
 
    //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]);//各行の開放
}
free(mat);//行ポインタの開放
 
    return 0;
}
 

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