pesel

#include <iostream>
#include <cstdlib>
#include <stdio.h>

using namespace std;

int main()
{
	int pesel[11];
	int suma = 0, n=0;

	//cin >> n;

	//for (int o = 0; o < n; o++){

		for (int i = 0; i < 11; i++)
		pesel[i] = getchar() - 48;

		pesel[0] *= 1;
		pesel[1] *= 3;
		pesel[2] *= 7;
		pesel[3] *= 9;
		pesel[4] *= 1;
		pesel[5] *= 3;
		pesel[6] *= 7;
		pesel[7] *= 9;
		pesel[8] *= 1;
		pesel[9] *= 3;
		pesel[10] *= 1;

		for (int i = 0; i < 11; i++)
			suma += pesel[i];

		if (suma > 0)
			if ((suma % 10) == 0)
				cout << "D" << endl;
			else
				cout << "N" << endl;
		else
			cout << "N" << endl;

	suma = 0;
//}
	system("PAUSE");
}