#include<bits/stdc++.h>
using namespace std;
int vx[10003],vy[10003];
bool ff[10003][10003];//10^8*1/10^6=100;10^8*8/10^6
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}
	return x*f;
}
int main(){
//	freopen("paint.in","r",stdin);
//	freopen("paint.out","w",stdout);
	int t;
	t=read();
	while(t--){
		int n,m,q;
		n=read();
		m=read();
		q=read();
		for(int i=1;i<=q;i++){
			int opt,x,c;
			opt=read();
			x=read();
			c=read();
			if(opt==0){
				vx[x]=c;
				for(int i=1;i<=m;i++)ff[x][i]=1;//1 hang
			}
			else{
				vy[x]=c;
				for(int i=1;i<=n;i++)ff[i][x]=0;//0 lie
			}
		}
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				if(ff[i][j])printf("%d ",vx[i]);
				else printf("%d ",vy[j]);
			}
			printf("\n");
		}
		memset(vx,0,sizeof(vx));
		memset(vy,0,sizeof(vy));
		memset(ff,0,sizeof(ff));
	}
	return 0;
}

/*
1
2 2 2
1 1 1
0 2 3


000
000

100
100

10
33

*/