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

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

MiAz

2 3