Submission #1386324

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Source Code Expand

<?php
  class Scanner {
    private $arr = [];
    private $count = 0;
    private $pointer = 0;
    
    public function next(){
        if($this->pointer >= $this->count){
          $str = trim(fgets(STDIN));
          $this->arr = explode(' ', $str);
          $this->count = count($this->arr);
          $this->pointer = 0;
        }
        $result = $this->arr[$this->pointer];
        $this->pointer++;
        return $result;
    }
    
    public function hasNext() {
      return $this->pointer < $this->count;
    }
    
    public function nextInt() {
      return (int)$this->next();
    }
    
    public function nextDouble() {
      return (double)$this->next();
    }
  }
  
  class Out {
    public static function println($str = ""){
      echo $str . PHP_EOL;
    }
  }
  
  $in = new Scanner();
  $out = new Out();
  
  $a = $in->nextInt();
  $b= $in->nextInt();
  
  $out->println($a - $b);
?>

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