#include <iostream>
#include <string.h>
using namespace std;
class Ans{
	public:
		int x;
		int y;
};
int main(){
	int n,m;
	cin>>n>>m;
	int arr[n+5][m+5];
	Ans ans[1000];
	memset(arr,0,sizeof(arr));
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>arr[i][j];
		}
	}
	int t;
	cin>>t;
	int x1,x2,y1,y2;
	for(int i=1;i<=t;i++){
		cin>>x1>>y1>>x2>>y2;
		int temp=arr[x1][y1];
		arr[x1][y1]=arr[x2][y2];
		arr[x2][y2]=temp;
	}
	int k=0;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(arr[i][j]>arr[i-1][j]&&arr[i][j]>arr[i+1][j]&&
			arr[i][j]>arr[i][j-1]&&arr[i][j]>arr[i][j+1]){
				ans[k].x=i;
				ans[k].y=j;
				k++;
			}
		}
	}
	cout<<k<<endl;
	for(int i=0;i<k;i++){
		cout<<ans[i].x<<" "<<ans[i].y<<endl;
		
	}
}