#include <iostream>
#define MOD 1999999973
using namespace std;

int LogP(int a,int n)
{
    int p=1;
    while(n>0)
    {
        if(n%2==1) p=p*a%MOD;
        n/=2;
        a=a*a%MOD;
    }
    return p;
}

int main()
{



    return 0;
}