#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;
    int *p;
    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);
    p = (int *)malloc(sizeof(int)*a*b);
 
    if(mat==NULL || p==NULL){
    	printf("ERROR\n");
    	return 0;
    }
 
    for(i=0; i<a; i++){
    	mat[i] = p+b*i;
    }
	//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;
			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？
    free(p); //確保したのと逆の順番で解放
	free(mat);
 
    return 0;
}
 

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

MiAzCg==

2 3