please help me
here is my program:

#include<iostream>
using namespace std;
int n,k,a[128],b[128],i,j,p,m,k1,k2,n1;
int main()
{
    cin>>n>>k;
    for(i=1;i<=n;i++)
     cin>>a[i];
    if(n%k==0)k2=k1=n/k;
     else
     {
         if(k==2){k1=k2=n/2;k1++;}
         else
         {
             n1=n;
             while(n1)
             {
                      n1--;
                      if(n1%(k-1)==0){k1=n1/(k-1);k2=(n-n1);break;}
             }
         }
     }
    for(i=1;i<k;i++)
     b[i]=k1;
    b[k]=k2;
    for(i=1;i<=b[1];i++)
    {
        p=i;
        for(j=1;j<=k-1;j++)
        {
                         if(a[p]<10)cout<<"   "<<a[p];
                          else
                           if(a[p]<100)cout<<"  "<<a[p];
                            else
                             if(a[p]<1000)cout<<" "<<a[p];
                         p+=b[j];
        }
        if(p<=n)
        {
                if(a[p]<10)cout<<"   "<<a[p];
                 else
                  if(a[p]<100)cout<<"  "<<a[p];
                   else
                    if(a[p]<1000)cout<<" "<<a[p];
        }
        if(i!=b[1])cout<<endl;
    }
}