function validateFifth(input)
473  {
474  	let one = [];
475  	let twos = [];
476  	let array = input.trim().split("\n");
477  	let foundTwo = false;
478  	let foundOne = false;
479  	console.log("Parsing array");
480  	console.log(array);
481  	for (let i = 0; i < array.length; ++i)
482  	{
483  		if (array[i].length !== array[0].length)
484  		{
485  			console.log("Invalid array");
486  			return "Arrays cannot have differing lengths.";
487  		}
488  		for (let j = 0; j < array[i].length; ++j)
489  		{
490  			if (array[i][j] === '2')
491  			{
492  				foundTwo = true;
493  				console.log("Found 2 at " + [i,j]);
494  				twos.push([i,j]);
495  			}
496  			if (array[i][j] === '1')
497  			{
498  				if (!foundOne)
499  				{
500  					console.log("Found 1 at " + [i, j]);
501  					one = [i, j];
502  					foundOne = true;
503  				}
504  				else
505  				{
506  					console.log("Invalid array");
507  					return "Cannot have multiple ones in the array.";
508  				}
509  			}
510  		}
511  	}
512  	if (!foundOne)
513  	{
514  		console.log("Invalid array");
515  		return "Missing '1'.";
516  	}
517  
518  	let minDistance = null;
519  	for (let i = 0; i < twos.length; ++i)
520  	{
521  		console.log("Finding distance for " + twos[i]);
522  		let x = Math.min(array[0].length - (Math.abs(one[0] - twos[i][0])), (Math.abs(one[0] - twos[i][0])));
523  		console.log("x distance: " + x);
524  		let y = Math.min(array[0].length - (Math.abs(one[1] - twos[i][1])), (Math.abs(one[1] - twos[i][1])));
525  		console.log("y distance: " + y);
526  		if ((x + y < minDistance) || !minDistance)
527  		{
528  			console.log("New minDistance is " + (x + y));
529  			minDistance = x + y;
530  		}
531  	}
532  	return minDistance;
533  }