#include <iostream>
using namespace std;
long int n,a[1000001];
int main()
{
    cin>>n;
    a[1]=26;
    a[2]=26*26;
    for(int i=3;i<=n;i++)
        a[i]=(25*a[i-1]+25*a[i-2])%777013;
    cout<<a[n];
    return 0;
}