#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
using namespace std;
const int N=1e5+10;
int T,n,m,q;
pair<int,int>l[N],h[N];
void solve(){
    for(int i=1;i<=n;i++)h[i] = {0, 0};
    for(int j=1;j<=m;j++)l[j] = {0, 0};
    cin>>n>>m>>q;
    for(int i=1;i<=q;i++){
        int op,x,c;
        cin>>op>>x>>c;
        if(op==0){
            h[x]={c,i};
        }else{
            l[x]={c,i};
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            if(h[i].second>l[j].second)cout<<h[i].first<<" ";
            else cout<<l[j].first<<" ";
        }
        cout<<'\n';
    }
}
int main(){
    freopen("paint.in", "r", stdin);
    freopen("paint.out", "w", stdout);
    cin>>T;
    while(T--){
        solve();
    }
    return 0;
}