#include<bits/stdc++.h>
using namespace std;
const int N=1e5+5;
int n,m,q,T;

int main(){
	freopen("paint.in","r",stdin);
	freopen("paint.out","w",stdout);
	for(cin>>T;T;T--){
		cin>>n>>m>>q;
		vector<pair<int,int>>row(n+1),col(m+1);
		for(int i=1;i<=q;i++){
			int op,x,c;
			cin>>op>>x>>c;
			if(op==0)row[x]={c,i};
			else col[x]={c,i};
		}
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				if(row[i].second<col[j].second)cout<<col[j].first<<' ';
				else cout<<row[i].first<<' ';
			}
			cout<<'\n';
		}
	}
	
	return 0;
}