import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class row { public static long k,a,b; public static void odczytajLinie(){ BufferedReader buffer=new BufferedReader(new InputStreamReader(System.in)); try { String line=buffer.readLine(); String[] stringTab = line.split(" "); k = Long.parseLong(stringTab[0]); a = Long.parseLong(stringTab[1]); b = Long.parseLong(stringTab[2]); buffer.close(); } catch (IOException e) { e.printStackTrace(); } } public static long sumujKwadraty(long n){ return n == 0 ? 0 : (n%10)*(n%10) + sumujKwadraty(n/10); } public static boolean rozwiazujeRownanie(long k, long n){ return k*sumujKwadraty(n) == n; } public static long wykonajZadanie(long k, long a, long b){ long licznik = 0; for(long n = a; n<=b; n++){ if(rozwiazujeRownanie(k, n)){ licznik++; } } return licznik; } public static void main(String[] args) { odczytajLinie(); System.out.println(wykonajZadanie(k, a, b)); } }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class row { public static long k,a,b; public static void odczytajLinie(){ BufferedReader buffer=new BufferedReader(new InputStreamReader(System.in)); try { String line=buffer.readLine(); String[] stringTab = line.split(" "); k = Long.parseLong(stringTab[0]); a = Long.parseLong(stringTab[1]); b = Long.parseLong(stringTab[2]); buffer.close(); } catch (IOException e) { e.printStackTrace(); } } public static long sumujKwadraty(long n){ return n == 0 ? 0 : (n%10)*(n%10) + sumujKwadraty(n/10); } public static boolean rozwiazujeRownanie(long k, long n){ return k*sumujKwadraty(n) == n; } public static long wykonajZadanie(long k, long a, long b){ long licznik = 0; for(long n = a; n<=b; n++){ if(rozwiazujeRownanie(k, n)){ licznik++; } } return licznik; } public static void main(String[] args) { odczytajLinie(); System.out.println(wykonajZadanie(k, a, b)); } } |