#include <bits/stdc++.h>
using namespace std;
const long long inf = 1e9;
const long long base = 1e9 + 7;
const int N = 5e3 + 2;
int n, m, k;
int a[N][N];
pair<int, int> h[N], c[N];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cin >> n >> m >> k;
  long long x, y, z;
  for (int i = (1), b_ = (k); i <= b_; ++i) {
    cin >> x >> y >> z;
    if (x == 1) {
      h[y].first = z;
      h[y].second = i;
    } else {
      c[y].first = z;
      c[y].second = i;
    }
  }
  for (int i = (1), b_ = (n); i <= b_; ++i) {
    for (int j = (1), b_ = (m); j <= b_; ++j) {
      if (h[i].second == 0 && c[j].second == 0)
        cout << 0 << " ";
      else if (h[i].second > c[j].second)
        cout << h[i].first << " ";
      else
        cout << c[j].first << " ";
    }
    cout << endl;
  }
  return 0;
}
