#include<bits/stdc++.h>
using namespace std;

deque<int> v;

int main()
{
    int n,i=3;
    cin>>n;
    v.push_back(26),v.push_back(26*26);
    for(;i<=n;i++)
        v.push_back(25*v[1]+25*v.front()),v.back()%=777013,v.pop_front();
    cout<<v[1];
}