#include using namespace std; const double MOD = 900000011; long long n, c; double FindX() { double res = (c+fmod(sqrt(c*c-4), MOD))/2; res = fmod(res, MOD); return res; } double FastStep(double a, long long step) { double res = 1; while(step > 0) { if(step%2 == 1) { res*= a; res = fmod(res, MOD); } step/= 2; a*= a; a = fmod(a, MOD); } return res; } int main() { freopen("equation.in", "r", stdin); freopen("equation.out", "w", stdout); cin>>n>>c; //cout<