Thanks for the test, I've got AC!

#include <iostream>
#include <algorithm>
using namespace std;
int main()
{
    int i,n,m;
    cin>>n>>m;
    long int *a=new long int [n];
    for(i=0;i<n;i++)
        cin>>a[i];
    rotate(a,a+m,a+n);
    long int b[10];
    for(i=0;i<10;i++)
        b[i]=a[i];
    for(i=0;i<10;i++)
        cout<<b[i];
    cout<<endl;
    return 0;
}

the test of Alias doesn't work,but why?What is incorrect in code?