#include<bits/stdc++.h>
using namespace std;
bool spot[500][500]={false};
int main()
{
    int w,h,n;
    while(1)
    {
        cin>>w>>h>>n;
        if(w==0)
            break;
        int x1,x2,y1,y2,i,j,k,count=0;
        while(n--){
        cin>>x1>>y1>>x2>>y2;
        if(x1>x2)
            swap(x1,x2);
        if(y1>y2)
            swap(y1,y2);
        for(i=x1-1;i<x2;i++)
        {
            for(j=y1-1;j<y2;j++)

            {
                spot[i][j]=true;
            }
        }
        }
        for(i=0;i<w;i++)
        {
            for(j=0;j<h;j++)
            {
                if(spot[i][j]==false)
                    count++;
                else
                spot[i][j]=false;
            }
        }

        if(count==0)
            cout<<"There is no empty spots."<<endl;
        else if(count==1)
            cout<<"There is one empty spot."<<endl;
        else
            cout<<"There are "<<count<<" empty spots."<<endl;
    }
    return 0;
}