// File: EsameA.java
// Time-stamp: "2003-03-25 12:35:03 calvanes"
// Scopo: esame del 25/03/2003 - compito A - domanda 3

public class EsameA {
  public static int f(int i) {
    if (i == 0)
      return 0;
    else
      return i + f(i-1);
  }

  public static void main(String[] args) {
    int x;
    x = f(3);
    System.out.println(x);
  }
}