#include <iostream>
#include <vector>
using namespace std;
//vector<vector<int>> matrix(N, vector<int>(M, 0));
int main()
{
    int n,m,k; //n etelek szama, m-rendelesek szama, k-hozzavalok szama

    cin>>n>>m>>k;

    vector<vector<int>> menu(n, vector<int>(k,0));

    for (int i=1; i<=n; i++){ //felroljak az eteleket
        int x; //hany hozzavalo lesz
        cin>>x;
        for(int j=1; j<=x; j++){
            int a,b; //azonosito, mennyiseg
            cin>>a>>b;
            menu[i][a]=b;
        }
    }
    vector<int>eteldb(n,0);
    for (int i=1; i<=m; i++){ //rendelés
        int x; //rendelesben levo etelek szama
        cin>>x;
        for(int j=1; j<=x; j++){
            int a,b; //etel azonosito, db szam
            cin>>a>>b;
            eteldb[a]=+b;
        }
    }

    for (int i=1; i<=k; i++){ //hozzavalok es kiiras
        for (int j=1; j<=n; j++){ //kajak sorozara
            menu[0][i]=menu[j][i]*eteldb[i];
            cout<<menu[0][i]<<" ";
        }
    }
    return 0;
}