四十三分（doge
by sordio @ 2023-09-18 12:28:26
```
#include<bits/stdc++.h>
using namespace std;
long long s[1002][1002];
int main(){
long long n,m,x,y,c,x1,y1,ans=0,xy[1000002][2];
cin>>n>>m;
for(int i=0;i<=n+1;i++)
for(int j=0;j<=m+1;j++)
s[i][j]=0;
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
cin>>s[i][j];
cin>>c;
for(int i=1;i<=c;i++){
cin>>x>>y>>x1>>y1;
swap(s[x][y],s[x1][y1]);
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(s[i][j]>s[i+1][j]&&s[i][j]>s[i][j+1]&&s[i][j]>s[i-1][j]&&s[i][j]>s[i][j-1]){
ans++;
xy[ans][0]=i;
xy[ans][1]=j;
}
}
}
cout<<ans<<endl;
for(int i=1;i<=ans;i++){
cout<<xy[i][0]<<" "<<xy[i][1]<<endl;
}
return 0;
}
```
by dingchenjun @ 2023-09-18 13:33:59