UVA 202 Decimal _uva

Don't understand, let's make a flag

Import Java.util.Arrays;
Import Java.util.Scanner;

public class Main {
	static int[] r = new int[3003];
	static int[] U = new int[3003];
	Static int[] s = new int[3003];
	public static void Main (string[] args) {
		Scanner scan = new Scanner (system.in);
		int t;
		while (Scan.hasnext ()) {
			int n = scan.nextint ();
			int m = Scan.nextint ();
			t = N;
			Arrays.fill (r, 0);
			Arrays.fill (u, 0);
			int count = 0;
			r[count++] = n/m;
			n = n%m;
			while (u[n]==0&&n!=0) {
				U[n] = count;
				S[count] = n;
				r[count++] = 10*n/m;
				n = 10*n%m;
			}
			System.out.printf ("%d/%d =%d.", t,m,r[0]);
			for (int i=1;i<count&&i<=50;++i) {
				if (n!=0&&s[i]==n) System.out.printf ("());
				System.out.printf ("%d", R[i]);
			if (n==0) System.out.printf ("(0");
			if (count>50) System.out.printf ("...");
			System.out.printf (") \ n");
			System.out.printf ("   %d = number of digits in repeating cycle\n\n", n==0?1:count-u[n]);}}