#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 6, M = 3, nBits = 2e8 + 5, MM = (1 << 16), MAX = 1111,
          OO = 0x3f3f3f3f, MOD = 1000000007, inf = 1 << 30;
const double PI = acos(-1);
const long long INF = (long long)1e18, MOOD = 1000000007;
long long GCD(long long a, long long b) { return !b ? a : GCD(b, a % b); }
long long LCM(long long x, long long y) { return (x * y / GCD(x, y)); }
long long fact(long long z) { return (z <= 1) ? 1 : z * fact(z - 1); }
void fast() {
  std::ios_base::sync_with_stdio(0);
  cin.tie(NULL);
  cout.tie(NULL);
}
int t, a, b, color[N], n, m, k, x, y, r[5001], c[5001];
int main() {
  fast();
  cin >> n >> m >> k;
  for (int i = 1; i <= k; ++i) {
    cin >> a >> b >> color[i];
    if (a == 1)
      r[b] = i;
    else
      c[b] = i;
  }
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= m; ++j) cout << color[max(r[i], c[j])] << " ";
    cout << endl;
  }
  return 0;
}
