```cpp
#include<bits/stdc++.h>
using namespace std;
struct xs{
int yw;
int sx;
int yy;
int zf;
};
int main() {
int a,c=0;
cin>>a;
xs b[a];
for(int i=0;i<a;i++){
cin>>b[i].yw>>b[i].sx>>b[i].yy;
b[i].zf=b[i].yw+b[i].sx+b[i].yy;
}for(int i=0;i<a;i++){
for(int j=i+1;j<a;j++){
if(abs(b[i].yw-b[j].yw)<=5&&abs(b[i].yy-b[j].yy)<=5&&abs(b[i].sx-b[j].sx)<=5&&abs(b[i].zf-b[j].zf)<=10){
c+=1;
}
}
}cout<<c;
return 0;
}
```
## 看一下P5728，改一下就能全对。
by wangderui111 @ 2024-02-17 16:26:39