#define _USE_MATH_DEFINES #include <bits/stdc++.h> using namespace std; //template #define rep(i,a,b) for(int i=(a);i<(b);i++) #define rrep(i,a,b) for(int i=(a);i>(b);i--) #define ALL(v) (v).begin(),(v).end() typedef long long int ll; const int inf = 0x3fffffff; const ll INF = 0x1fffffffffffffff; const double eps=1e-12; void tostr(ll x,string& res){while(x)res+=('0'+(x%10)),x/=10; reverse(ALL(res)); return;} template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; } template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; } //template end int main(){ int n; scanf("%d",&n); vector<ll> a(n); rep(i,0,n)scanf("%lld",&a[i]); sort(ALL(a)); vector<ll> b(n+1,0); rep(i,0,n)b[i+1]=b[i]+a[i]; ll res=0; rep(i,0,n){ int lb=0,rb=i+1; while(rb-lb>1){ int mid=(lb+rb)/2; if(a[i]-a[i-mid]<a[n-mid]-a[i])lb=mid; else rb=mid; } chmax(res,b[i]-b[i-lb]+b[n]-b[n-lb]-a[i]*lb*2); } printf("%lld\n",res); return 0; }