'''
Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl,
CCode, Compile, Run and Debug online from anywhere in world.
'''
import math
n=int(input())
l=list(map(int,input().split()))
l.sort()
ans1=[]
ans2=[]
for i in range(n):
if i%2==0:
ans1.append(l[i])
else:
ans2.append(l[i])
ans1=ans1+ans2[::-1]
for e in ans1:
print(e,end=" ")#include <bits/stdc++.h>
using namespace std;
int main(){
int n;
scanf("%d", &n);
int l[n];
for(int i = 0; i < n; i++){
scanf("%d", l+i);
}
sort(l, l+n);
deque<int> d;
for(int i = 0; i < n; i++){
if(i % 2) d.push_back(l[i]);
else d.push_front(l[i]);
}
for(int i = 0; i < n; i++){
printf("%d ", d[i]);
}
printf("\n");
return 0;
}
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435. Non-overlapping Intervals | 406. Queue Reconstruction by Height |
380. Insert Delete GetRandom O(1) | 332. Reconstruct Itinerary |