text: function squares(a, b) {
    let leftLimit = Math.floor(Math.sqrt(a))
    let rigthLimit = Math.floor(Math.sqrt(b))
  
    let squareLeft = leftLimit * leftLimit
    let squareRigth = rigthLimit * rigthLimit
    let diff = rigthLimit - leftLimit
  
    return a > squareLeft && b >= squareRigth ? diff : diff + 1
  }
  