coin change

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int i,n,a[]={1,2,5,10,20,50,100,500,1000};
    int l=sizeof(a)/sizeof(a[0]);
    sort(a,a+l,greater<int>());
    for(i=0;i<l;i++)
    {
        cout<<a[i]<<endl;
    }
    cin>>n;
    for(i=0;i<l;i++)
    {
        while(n>=a[i])
        {
            n=n-a[i];
            cout<<a[i]<<endl;
        }
    }
}