text: 'use strict';
  
  import { getInput, filterMap, getLocations, isTree } from './util.js';
  
  function main() {
    const stepsH = 3;
    const stepsV = 1;
  
    console.log(
      getLocations(filterMap(getInput(), stepsV), stepsH).filter(isTree).length
    );
  }
  
  main();
  