ProcedurProgramavimas_1.18

#include <iostream>

using namespace std;

int main()
{
    long long int  n, ats = 1;
    cin >> n;
    for (long long int i = 0; i < n; i++)
    {
        ats = (ats * 2)% 1000;
    }
    if (n>6 && 10<ats && ats<100)
    {
        cout << "0" << ats;
    }
    else if ( n>6 && ats<10)
    {
        cout << "00" << ats;
    }
    else
    {
        cout << ats;
    }

    return 0;
}