```cpp
#include<bits/stdc++.h>
using namespace std;
long long n=0,m=0,sum=0,t=0,xl=0,xr=0,yl=0,yr=0;
long long a[10086][10086]={},x[10086]={},y[10086]={};
int main(){
scanf("%lld%lld",&n,&m);
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
scanf("%lld",&a[i][j]);
}
}
scanf("%lld",&t);
while(t--){
scanf("%lld%lld%lld%lld",&xl,&yl,&xr,&yr);
swap(a[xl][yl],a[xr][yr]);
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(a[i-1][j]<a[i][j]&&a[i][j-1]<a[i][j]&&a[i+1][j]<a[i][j]&&a[i][j+1]<a[i][j]){
sum++;
x[sum]=i;
y[sum]=j;
}
}
}
printf("%lld\n",sum);
for(int i=1;i<=sum;i++){
printf("%lld %lld\n",x[i],y[i]);
}
return 0;
}
```
by han_jian__wu_wei_han @ 2023-09-03 11:47:30