#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;//宣言
    scanf("%d %d",&a,&b);
 
	mat = (int**)malloc(sizeof(int*)*a);  //行の確保
	if(mat == NULL){
		printf("ERROR\n");
		return 0;
	}
 
	for(i=0; i<a; i++){  //列の確保
		mat[i]=(int*)malloc(sizeof(int)*b);
		if(mat[i] == NULL){
		printf("ERROR\n");
		return 0;
		}
	}
	//2次元配列
	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？
    //mallocと逆順でfree　←列は行にくっついている
    for(i=0;i<a;i++){
    	free(mat[i]);
    }
	free(mat);
 
    return 0;
}
 

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