#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[1003][1003],n,m,x1,y1,x2,y2,sum=0,b[1003][2],t;
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>a[i][j];
		}
	}
	cin>>t;
	for(int i=0;i<t;i++){
		cin>>x1>>y1>>x2>>y2;
		int tmp=a[x1][y1];
		a[x1][y1]=a[x2][y2];
		a[x2][y2]=tmp;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(a[i][j]>a[i-1][j]&&a[i][j]>a[i+1][j]&&a[i][j]>a[i][j-1]&&a[i][j]>a[i][j+1]){
				b[sum][0]=i;
				b[sum++][1]=j;
			}
		}
	}
	cout<<sum;
	for(int i=0;i<sum;i++){
		cout<<b[sum][0]<<" "<<b[sum][1]<<endl;
	}
}