#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);
    if(mat==NULL){
    	printf("ERROR\n");
    	return 0;
 
    }
    for(i=0;i<a;i++){
    	mat[i]=(int*)malloc(sizeof(int)*b);
    	if(mat[i]==NULL){
    		printf("ERROR\n");
    		for(k=0;k<i;k++){
    			free(mat[k]);
    		}
    		free(mat);
    	}
    }
 
	//ここで2次元配列に数値を代入する
	int n=1;
	for(i=0;i<a;i++){
		for(j=0;j<b;j++){
			mat[i][j]=n++;
		}
	}
 
    //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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

MyA0

3 4