#include<bits/stdc++.h>
using namespace std;
int n,m,a[1001][1001],t,x1,y1,x2,y2,s,b[2001];
int main(){
    scanf("%d%d",&n,&m);
    for(int i=1;i<=n;i++)
      for(int j=1;j<=m;j++)
        scanf("%d",&a[i][j]);
    scanf("%d",&t);
    while(t--){
        scanf("%d%d%d%d",&x1,&y1,&x2,&y2);
        swap(a[x1][y1],a[x2][y2]);
    }
    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]){
            s++; b[s]=i,b[s+1]=j;
          }
    printf("%d\n",s);
    for(int i=1;i<=2*s;i++)
      printf("%d %d\n",b[i],b[i+1]);
    return 0;
}