POJ 2876

 #include<iostream>
 #include<string>
 using namespace std;

 string s[];

 int main()
 {
     //freopen("acm.acm","r",stdin);
     string tem;
     int i;
     s[] = "-";
     for(i = ; i < ; ++ i)
     {
         s[i] += s[i-];
         s[i] += s[i-];
         s[i] += s[i-];
         fill_n(s[i].begin()+s[i-].length(),s[i-].length(),' ');
     }
     while(cin>>i)
     {
         cout<<s[i]<<endl;
     }
 }