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  1. function movimientos() {
  2.   var input = readline();
  3.   var splited = input.split(',');
  4.   const x1 = splited[0];
  5.   const x2 = splited[1];
  6.   const y1 = splited[2];
  7.   const y2 = splited[3];
  8.   console.log('inputs', splited);
  9.  
  10.   if (x1 === x2 && y1 === y2) {
  11.     return 0;
  12.   }
  13.  
  14.   const moves = [
  15.     [-2, -1], [-1, -2], [1, -2], [2, -1], 
  16.     [2, 1], [1, 2], [-1, 2], [-2, 1]
  17.   ];
  18.  
  19.   const queue = [[x1, y1, 0]]; 
  20.   const visited = new Set([`${x1},${y1}`]);
  21.  
  22.   while (queue.length > 0) {
  23.     const [x, y, jumps] = queue.shift();
  24.  
  25.     for (const [dx, dy] of moves) {
  26.       const nx = x + dx;
  27.       const ny = y + dy;
  28.  
  29.       if (nx === x2 && ny === y2) {
  30.         return jumps + 1;
  31.       }
  32.  
  33.       const key = `${nx},${ny}`;
  34.       if (nx >= -200 && nx <= 200 && ny >= -200 && ny <= 200 && !visited.has(key)) {
  35.         visited.add(key);
  36.         queue.push([nx, ny, jumps + 1]);
  37.       }
  38.     }
  39.   }
  40.  
  41.   return "IMPOSSIBLE";
  42. }
  43.  
  44. console.log(movimientos());
Success #stdin #stdout 0.03s 17456KB
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0, 0, 2, 1
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inputs 0, 0, 2, 1
IMPOSSIBLE
https://ideone.com/gLeBfC
language:
JavaScript (SMonkey 60.2.3)
created:
10 hours ago
visibility:
public

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