class soma
 {static double SomaIt (double n, double m)
 {int soma = 0;
   for (int i = 1;i <= m;i++) soma += n;
    return soma ;}
 
  static double SomaIt (double n, double m, double a,double b)
    {return ((SomaIt(n,m) + SomaIt(a,b))/2);}
    
 public static void main(String[] a)
  {System.out.println(soma.SomaIt(3,5,2,6));}}