#include<bits/stdc++.h>
using namespace std;
struct inf1{
	int x,y;
};
struct inf2{
	int h,c;
};
map<inf1,inf2>s;
int main(){
	int n,m,k;
	cin>>n>>m>>k;
	for(int i=1;i<=k;++i){
		inf1 a;
		cin>>a.x>>a.y;
		inf2 b;
		cin>>b.h>>b.c;
		s[a]=b;
	}
	for(int i=1;i<=n;++i){
		for(int j=1;j<=m;++j){
			inf1 p;
			p.x=i,p.y=j;
			inf2 q=s[p];
			cout<<q.c<<' ';
		}
		cout<<'\n';
	}
}

CE了，有dalao帮我看看报错的原因吗，谢谢QAQ