#include<bits/stdc++.h>
using namespace std;
#define N 100010
int h[N], l[N], ht[N], lt[N]; //横颜色，纵颜色，横时间，纵时间
int n, m, t, q;
int opt, x, c;
int main() {
	scanf("%d", &t);
	while (t--) {
		scanf("%d%d%d", &n, &m, &q);
		memset(h, 0, sizeof(int) * (n + 1)); //记得清空
		memset(l, 0, sizeof(int) * (m + 1));
		memset(ht, 0, sizeof(int) * (n + 1));
		memset(lt, 0, sizeof(int) * (m + 1));
		for (int i = 1; i <= q; ++i) {
			scanf("%d%d%d", &opt, &x, &c);
			if (opt) { //横/纵
				l[x] = c;
				lt[x] = i;
			} else {
				h[x] = c;
				ht[x] = i;
			}
		}
		for (int i = 1; i <= n; ++i) { //输出
			for (int j = 1; j <= m; ++j) {
				printf("%d ", (ht[i] > lt[j]? h[i] : l[j]));
			}
			putchar('\n');
		}
	}
	return 0;
}