text: 
  function checkExam(array1, array2) {
      let score = 0;
      for (let i = 0; i < array1.length; i++){
          if (array1[i] === array2[i]) {
              score += 4;
          } else if (array1[i] !== array2[i] && array2[i] !== "") {
              score += -1;
          }
      }
      return (score < 0) ? 0 : score
  }
  
  
  module.exports = {
      checkExam
  }