import { readFileSync } from 'fs';
import { join } from 'path';

function distance(p1: number[], p2: number[]): number {
    var x = p1[0] - p2[0];
    var y = p1[1] - p2[1];
    return Math.abs(x) + Math.abs(y)
}

const clamp = (num, min, max) => Math.min(Math.max(num, min), max);

const fileString = readFileSync(join(__dirname, "inp"), 'utf-8');
var commands = fileString.split("\n");
commands = commands.filter(val => {
  return val.length > 0;
})
commands = commands.map(val => {
  return val.trim();
})
const cmds =  commands.map(val => {
  return val.split(" ");
})

console.log(cmds);

var positions = {};

var pointlist = [];
const POINTS = 10;
for (var l = 0; l < POINTS; l++) {
  pointlist.push([0, 0])
}
positions[pointlist[0].toString()] = 1;

for (const command of cmds) {
  const direction = command[0];
  const count = +command[1];
  for (var j = 0; j < POINTS; j++){
    for (var k = 0; k < count; k ++) {
      if (j == 0) {
        switch(direction) {
          case 'U':
            pointlist[j] = [pointlist[j][0], pointlist[j][1] + 1];
            break;
          case 'D':
            pointlist[j] = [pointlist[j][0], pointlist[j][1] - 1];
            break;
          case 'L':
            pointlist[j] = [pointlist[j][0] - 1, pointlist[j][1]];
            break;
          case 'R':
            pointlist[j] = [pointlist[j][0] + 1, pointlist[j][1]];
            break;
        }
      } else {
        var currentPosition = pointlist[j];
        var currentHeadPosition = pointlist[j - 1];
        if (
          (Math.abs(currentHeadPosition[0] - currentPosition[0]) > 1) ||
          (Math.abs(currentHeadPosition[1] - currentPosition[1]) > 1)
        ) {
          var xdiff = clamp(currentHeadPosition[0] - currentPosition[0], -1, 1);
          var ydiff = clamp(currentHeadPosition[1] - currentPosition[1], -1, 1);
          currentPosition = [currentPosition[0] + xdiff, currentPosition[1] + ydiff];
          pointlist[j] = currentPosition;

          if (j == 9) {
            if(currentPosition.toString() in positions) {
              positions[currentPosition.toString()] += 1;
            } else {
              positions[currentPosition.toString()] = 1;
            }
          }
        }
      }
    }
  }
  console.log(pointlist);
}

console.log(Object.keys(positions).length);