#include<bits/stdc++.h>//涂色游戏 
using namespace std;
long long t,n,m,q,a,b,c;//行 列 操作次数 
int main(){
//	freopen("paint1.in","r",stdin);
//	freopen("paint2.out","w",stdout);
	cin>>t;
	for(long long i=1;i<=t;i++){
		cin>>n>>m>>q;
		long long dt[n+1][m+1];
		memset(dt,0,sizeof(dt));
		for(long long j=1;j<=q;j++){
			cin>>a>>b>>c;
			if(a==0){
				for(long long y=1;y<=m;y++) dt[b][y]=c;
			}else{
				for(long long y=1;y<=n;y++) dt[y][b]=c;
			}
		}
		for(long long s=1;s<=n;s++){
			for(long long e=1;e<=m;e++){
				cout<<dt[s][e]<<" ";
			}
			cout<<endl;
		}
	}
	
	
	return 0;
}

#include<bits/stdc++.h>//涂色游戏 
using namespace std;
long long t,n,m,q,a,b,c;//行 列 操作次数 
int main(){
//	freopen("paint1.in","r",stdin);
//	freopen("paint2.out","w",stdout);
	cin>>t;
	for(long long i=1;i<=t;i++){
		cin>>n>>m>>q;
		long long dt[n+1][m+1];
		memset(dt,0,sizeof(dt));
		for(long long j=1;j<=q;j++){
			cin>>a>>b>>c;
			if(a==0){
				for(long long y=1;y<=m;y++) dt[b][y]=c;
			}else{
				for(long long y=1;y<=n;y++) dt[y][b]=c;
			}
		}
		for(long long s=1;s<=n;s++){
			for(long long e=1;e<=m;e++){
				cout<<dt[s][e]<<" ";
			}
			cout<<endl;
		}
	}
	
	
	return 0;
}