#include <iostream>

using namespace std;

const int MAXN = 1e3 + 5;

int n,m;
int a[MAXN][MAXN];
int T;
int x1,y1,x2,y2;

bool check(int x,int y){
	if (a[x][y] <= a[x-1][y  ]) return 0;
	if (a[x][y] <= a[x+1][y  ]) return 0;
	if (a[x][y] <= a[x  ][y-1]) return 0;
	if (a[x][y] <= a[x  ][y+1]) return 0;
	return 1;
}

int main(){
	cin >> n >> m;
	for (int i=1;i<=n;i++)
	for (int j=1;j<=m;j++)
		cin >> a[i][j];
	cin >> T;
	while (T--){
		cin >> x1 >> y1 >> x2 >> y2;
		swap(a[x1][y1], a[x2][y2]);
	}
	
	int ans = 0;
	for (int i=1;i<=n;i++)
	for (int j=1;j<=m;j++)
		if (check(i,j))	ans++;
	cout << ans << endl;
	
	
	for (int i=1;i<=n;i++)
	for (int j=1;j<=m;j++)
		if (check(i,j))	cout << i << " " << j << endl;
	
}