class Main {
   void main() {
      int r1;
      int i0,  i1;
      int x,y,z;
		
      i0 = 5;
      i1 = 2;
		
      r1 = i1 * 3;
      write(r1); writeln();

      r1 = i0 * i1;
      write(r1); writeln();
	
      r1 = r1 * i0 * i1 * 3;
      write(r1); writeln();
      
      y = 5;
      z = 10;
      x = (-y * z);
      write(x); writeln();
      
      y = 0;
      z = - 10;
      x = (y * z);
      write(x); writeln();
      write(y * z); writeln();
      write(0 * -10); writeln();
   }
}