POJ ( acm.pku.edu.cn ) 1032

#include <iostream>
using namespace std;
int main(){
   for(int n;cin>>n;){
       int i,j,s;
       for(s=0,i=2;s<n;s+=i,++i);
       if (s==n) {
           for(j=2;j<i;++j)
               cout<<j<<" ";
       } else if (s-n==1) {
           for(j=2;j<i-2;)
               cout<<++j<<" ";
           cout<<j+2<<" ";
       } else {
           for(j=2;j<s-n;++j)
               cout<<j<<" ";
           for(;j<i-1;)
               cout<<++j<<" ";
       }
       cout<<endl;
   }
   return 0;
}