#include <iostream>
#include <cstdlib>

using namespace std;

struct List {
    int value;
    int line;
    int column;
    List* Next;
    List* Prev;
};


void MakeList(int N, int M, int n, int m, List** Head, List* Prev){
    if (m==M){
        m = 0;
        n++;
    }
    if (n==N)
        return;
    int tmp;

    cin >> tmp;
    if (tmp){
        (*Head) = (List*)malloc(sizeof(List));
        (*Head)->value = tmp;
        (*Head)->line = n;
        (*Head)->column = m;
        (*Head)->Prev = Prev;
        (*Head)->Next = NULL;
        MakeList(N, M, n, m+1, &((*Head)->Next), (*Head));
    } else
        MakeList(N, M, n, m+1, Head, Prev);
}

void PrintList (List *Head){
    if (Head!=NULL){
        if (Head->Prev){
            if (Head->Prev->column > Head->column)
                cout << endl;
        }
        cout << Head->value << ' ';
        PrintList(Head->Next);
    } else
        cout << endl;
}

void LAL (int *arr, List** Head){
    if (!(*Head))
        return;
    if (!arr[(*Head)->line])
        arr[(*Head)->line] = 1;
    arr[(*Head)->line] *= (*Head)->value;
    LAL (arr, &((*Head)->Next));
}

int main()
{
    int N, M, i, *arr;
    cin >> N >> M;
    List* Lal;
    MakeList(N, M, 0, 0, &Lal, NULL);
    cout << "Your List:\n" ;
    PrintList(Lal);

    arr = (int*)calloc(N, sizeof(int));
    LAL(arr, &Lal);

    cout << "Product:\n";
    for (i = 0; i < N; i++)
        cout << arr[i] << ' ' ;
    cout << endl;

    return 0;
}