title: Circle Lattice Points
signature: function circle_lattice_points(r)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(r, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(r), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(34, 12);
      @printf("TEST-0...%s\n",result);
      
      result = driver(56, 4);
      @printf("TEST-1...%s\n",result);
      
      result = driver(90, 12);
      @printf("TEST-2...%s\n",result);
      
      result = driver(47, 4);
      @printf("TEST-3...%s\n",result);
      
      result = driver(36, 4);
      @printf("TEST-4...%s\n",result);
      
      result = driver(63, 4);
      @printf("TEST-5...%s\n",result);
      
      result = driver(21, 4);
      @printf("TEST-6...%s\n",result);
      
      result = driver(76, 4);
      @printf("TEST-7...%s\n",result);
      
      result = driver(18, 4);
      @printf("TEST-8...%s\n",result);
      
      result = driver(75, 20);
      @printf("TEST-9...%s\n",result);
      
  end
  
  main()
source_py: def circle_lattice_points(r):
      if (r <= 0):
          return 0
      result = 4
      for x in range(1, r):
          ySquare = ((r * r) - (x * x))
          y = int(math.sqrt(ySquare))
          if ((y * y) == ySquare):
              result += 4
      return result
source_cpp: int circle_lattice_points(int r) {
    if ( r <= 0 ) return 0;
    int result = 4;
    for ( int x = 1;
    x < r;
    x ++ ) {
      int ySquare = r * r - x * x;
      int y = sqrt ( ySquare );
      if ( y * y == ySquare ) result += 4;
    }
    return result;
  }