#include <bits/stdc++.h>
using namespace std;
int a[1005][1005];
int main() {
	int n,m;
	cin >> n >> m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin >> a[i][j];
		}
	} 
	int x,y,x1,y1; 
	int k;
	cin >> k;
	while(k--){
		cin >> x >> y >> x1 >> y1;
		swap(a[x][y],a[x1][y1]);
	}
	int ans=0;
	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]){
				ans++;
			}
		}
	}
	cout << ans << endl;
	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]){
				cout << i << " " << j << endl;
			}
		}
	}
	return 0;
}