硬写写出来的

#include <cwchar>
#include<iostream>
using namespace std;
int main(){
int m,n=0;
cin>>m;//

cout<<"+";
for(int i=1;i<=m-2;i++){
    cout<<"-";
}
cout<<"+"<<endl;//



for(int j=1;j<=m-3;j++){
    n+=1;
    cout<<"+";
    
    for(int i=1;i<=m-3;i++){    
        if(i==j){
            cout<<"+";
        }
    cout<<"-";  
    }        
cout<<"+"<<endl;
}//



cout<<"+";
for(int i=1;i<=m-3;i++){
    cout<<"-";
}
cout<<"+";
cout<<"+"<<endl;//



cout<<"+";
for(int i=1;i<=m-2;i++){
    cout<<"-";
}
cout<<"+";
return 0;

}