//Don't have to see. start------------------------------------------
var read = require('readline').createInterface({
  input: process.stdin, output: process.stdout
});
var obj; var inLine = [];
read.on('line', function(input){inLine.push(input);});
read.on('close', function(){
  obj = init(inLine);
  console.error('\n');
  var start = Date.now();
  Main();
  var end = Date.now() - start;
  myerr('time : ' + end + 'ms');
  myerr('memory : ' + Math.round(process.memoryUsage().heapTotal / 1024) + 'KB');
});
function makeClone(obj){return (obj instanceof Set) ? new Set(Array.from(obj)) : JSON.parse(JSON.stringify(obj));}
function nextInt(){return myconv(next(),1);} function nextStrArray(){return myconv(next(),2);}
function nextIntArray(){return myconv(next(),4);} function nextCharArray(){return myconv(next(),6);}
function next(){return obj.next();} function hasNext(){return obj.hasNext();}
function init(input){  
  return {
    list : input, index : 0, max : input.length,
    hasNext : function(){return (this.index < this.max);},
    next : function(){if(this.hasNext()){return this.list[this.index++];}else{throw 'ArrayIndexOutOfBoundsException ‚There is no more input';}}
  };
}
function myout(s){console.log(s);}
function myerr(s){console.error('debug:' + require('util').inspect(s,false,null));}
//param "no" is
//unknown or outlier : return i. 1: parseInt.
//2: split space. 4: split space and parseInt.
//6: split 1 character. 7: split 1 character and parseInt.
//8: join space. 9: join nextline. 0: join no character.
function myconv(i,no){try{switch(no){case 1:return parseInt(i);case 2:return i.split(' ');case 4:return i.split(' ').map(Number);case 6:return i.split('');case 7:return i.split('').map(Number);case 8:return i.join(' ');case 9:return i.join('\n');case 0:return i.join('');default:return i;}}catch(e){return i;}}

//Don't have to see. end------------------------------------------
function Main(){
  var N = nextInt();
  var list = new Array(N);
  for(var i = 0; i < N; i++){
    list[i] = nextInt();
  }
  list.sort(function(a,b){
  	return a - b;
  });
  var plus = [];
  var tmp = makeClone(list);
  for(var i = 0; i < N / 2; i++){
    plus.push(tmp.pop());
  }
  var sum = 0;
  if(N % 2 == 1){
    for(var i = 0; i < plus.length; i++){
      if(i < plus.length - 2){
        sum += 2 * plus[i];
      }else{
        sum += plus[i];
      }
    }
    for(var i = 0; i < tmp.length; i++){
      sum -= 2 * tmp[i];
    }
  }else{
    for(var i = 0; i < plus.length; i++){
      if(i != plus.length - 1){
        sum += 2 * plus[i];
      }else{
        sum += plus[i];
      }
    }
    for(var i = 0; i < tmp.length; i++){
      if(i != tmp.length - 1){
        sum -= 2 * tmp[i];
      }else{
        sum -= tmp[i];
      }
    }
  }
  
  var minus = [];
  for(var i = 0; i < N / 2; i++){
    minus.push(list.shift());
  }
  var sum2 = 0;
  if(N % 2 == 1){
    for(var i = 0; i < minus.length; i++){
      if(i < minus.length - 2){
        sum2 -= 2 * minus[i];
      }else{
        sum2 -= minus[i];
      }
    }
    for(var i = 0; i < list.length; i++){
      sum2 += 2 * list[i];
    }
  }else{
    for(var i = 0; i < minus.length; i++){
      if(i != minus.length - 1){
        sum2 -= 2 * minus[i];
      }else{
        sum2 -= minus[i];
      }
    }
    for(var i = 0; i < list.length; i++){
      if(i != list.length - 1){
        sum2 += 2 * list[i];
      }else{
        sum2 += list[i];
      }
    }
  }
  
  myout(Math.max(sum, sum2));
}


Measured memory_bytes: 49292