@[sjz520](/user/767417)
> 如果有一块土地，比上下左右直接相邻的土地海拔都高，我们称其为一个山峰。
by Jerrycyx @ 2022-11-10 20:38:30
@[Jerrycyx](/user/545986) 为什么还有2RE？
```cpp
#include<bits/stdc++.h>
using namespace std;
int main(){
int a[1001][1001],n,m,t,x1[1001],x2[1001],y1[1001],y2[1001],s,sum;
cin>>n>>m;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
cin>>a[i][j];
}}
cin>>t;
if(t==0){
}else{
for(int i=1;i<=t;i++){
cin>>x1[i]>>y1[i]>>x2[i]>>y2[i];
s=a[x1[i]][y1[i]];
a[x1[i]][y1[i]]=a[x2[i]][y2[i]];
a[x2[i]][y2[i]]=s;
}}
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]){
sum++;
}
}}
cout<<sum<<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;
}
}}
}
```
by Serendi_Pity @ 2022-11-10 20:47:09
```cpp
#include<bits/stdc++.h>
using namespace std;
long long n,m,a[15005][15005],b[1005000],c[1000500],l=1,ans=0;
int main()
{
cin>>n>>m;
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) cin>>a[i][j];
int t;
cin>>t;
while(t--)
{
int x1,y1,x2,y2;
cin>>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((j==1&&a[i][j]>a[i-1][j]&&a[i][j]>a[i+1][j]&&a[i][j]>a[i][j+1])||(i==1&&a[i][j]>a[i+1][j]&&a[i][j]>a[i][j-1]&&a[i][j]>a[i][j+1])||(i==1&&j==1&&a[i][j]>a[i+1][j]&&a[i][j]>a[i][j+1])||(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++;
b[l]=i;
c[l++]=j;
}
}
cout<<ans<<endl;
for(int i=1;i<=ans;i++) cout<<b[i]<<" "<<c[i]<<endl;
return 0;
}
```
//求关注
by leoqing @ 2022-11-10 20:47:41
@[leoqing](/user/495133) 关注你妈呢傻*，从讨论区抄个代码你可真厉害，您这么强，写了道黑题，就是好像和题解长度一样呢-
[https://www.luogu.com.cn/record/85170434](https://www.luogu.com.cn/record/85170434)
题解代码[https://www.luogu.com.cn/record/96076949](https://www.luogu.com.cn/record/96076949)
by 3blue1blue @ 2022-11-29 20:47:18