#include <stdio.h>
#include <stdlib.h>
 
int main(){
    int i, j;
    int a, b;
    int **mat;
 
    scanf("%d %d", &a, &b);
 
    // 🌟 2次元配列の動的確保
    mat = (int **)malloc(a * sizeof(int *));
    for(i = 0; i < a; i++){
        mat[i] = (int *)malloc(b * sizeof(int));
    }
 
    // 🌟 2次元配列への数値の代入（例として i + j を入れる）
    for(i = 0; i < a; i++){
        for(j = 0; j < b; j++){
            mat[i][j] = i + j;  // 好きな値に変更可能
        }
    }
 
    // 🌟 表示部分（与えられたコード通り、触らなくてOK）
    for(i = 0; i < a; i++){
        for(j = 0; j < b; j++){
            printf("%d ", mat[i][j]);
        }
        printf("\n");
    }
 
    // 🌟 最後に忘れずにメモリの解放！
    for(i = 0; i < a; i++){
        free(mat[i]);
    }
    free(mat);
 
    return 0;
}
 
 

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