#include <bits/stdc++.h>
using namespace std;
const int MAXN = 100000, MAXM = 100000;
int T;
int n, m, q;
int row[MAXN + 5], rowTime[MAXN + 5];
int col[MAXM + 5], colTime[MAXM + 5];
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> T;
    while (T--)
    {
        cin >> n >> m >> q;
        for (int i = 1; i <= n; i++)
            row[i] = 0, rowTime[i] = 0;
        for (int i = 1; i <= m; i++)
            col[i] = 0, colTime[i] = 0;
        for (int i = 1; i <= q; i++)
        {
            int op, x, c;
            cin >> op >> x >> c;
            if (op == 0)
            {
                row[x] = c;
                rowTime[x] = i;
            }
            if (op == 1)
            {
                col[x] = c;
                colTime[x] = i;
            }
        }
        for (int i = 1; i <= n; i++)
        {
            for (int j = 1; j <= m; j++)
            {
                if (rowTime[i] > colTime[j])
                    cout << row[i] << " ";
                else
                    cout << col[j] << " ";
            }
            cout << "\n";
        }
    }
    return 0;
}