codeforces round #201 Div2 A. Difference Row

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main(){
    int n;
    cin >> n;
    vector<int> a(n);
    for(int i =  ; i < n; ++ i ) cin >>a[i];
    sort(a.begin(),a.end());
    swap(a[],a[n-]);
    for(int i =  ; i < n; ++i) cout<<a[i]<<" ";
    cout<<endl;
    return ;
}