class inner {
  static int inner(int a[],int b[]) {
      int s,k,size;
      size=a.length;
      s=0;
      for (k=0; k<size; k++) {
	  s = s+a[k]*b[k];
      }
      return s;
  }
  public static void main(String arg[]) {
      int[] x={1,2,3};
      int val;
      int[] y = new int[3];
      y[0]=5; y[1]=4; y[2]=3;
      val = inner(x,y);
      System.out.println(val);
  }
}