Ratsun reitit

const { format } = require('path')
const readline = require('readline')
 
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  terminal: false
})
 
let n
 
rl.on('line', (line) => {
  n = parseInt(line)
  rl.close()
})
 
rl.on('close', () => {
  let tiles = []
  for (let y = 1; y <= n; y++) {
    for (let x = 1; x <= n; x++) {
      tiles.push({ y, x })
    }
  }
  tiles[0].number = 0
  let currentTiles = [{ x: 1, y: 1 }]
  let i = 1
  while (true) {
    let possibleTiles = []
    currentTiles.forEach(cTile => {
      const cx = cTile.x
      const cy = cTile.y
      tiles.forEach((pTile, ii) => {
        if (((pTile.x === cx - 2 || pTile.x === cx + 2) && (pTile.y === cy - 1 || pTile.y === cy + 1)) || ((pTile.x === cx - 1 || pTile.x === cx + 1) && (pTile.y === cy - 2 || pTile.y === cy + 2))) {
          if (!pTile.number && pTile.number !== 0) {
            tiles[ii].number = i
            possibleTiles.push(pTile)
          }
        }
      })
    })
    currentTiles = possibleTiles
    i++
    if (tiles.filter(tile => tile.number).length + 1 === tiles.length) {
      break
    }
  }
  let printOut = ""
  tiles.forEach(tile => {
    printOut = printOut.concat(`${tile.number} `)
    if (tile.x === n && tile.y !== n) {
      printOut = printOut.concat("\n")
    }
  })
  console.log(printOut)
})

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

Test 8

Group: 2, 3

Verdict: ACCEPTED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED