#include <stdio.h>
void swapMaxMin(int *arr, int n) {
    int *maxPtr = arr;
    int *minPtr = arr;
    for (int i = 1; i < n; i++) {
        if (*(arr + 1) > *maxPtr) {
            maxPtr = arr + 1;
        }
        if(*(arr + 1) < *minPtr) {
            minPtr = arr +1 ;
        }
    }
    int temp = *maxPtr;
    *maxPtr = *minPtr;
    *minPtr = *maxPtr;
}
     int main() {
         int n;
         scanf("%d", &n);
         if (n <= 0 || n > 1000) {
             printf("Invalid input\n");
             return 0;
         }
         int arr[1000];
         
         for (int i = 0; i < n; i++) {
             scanf("%d", &arr[i] > 1000) {
        if (arr[i] < -1000 || arr[i] > 1000) {
            printf("Invalid input\n");
            return 0; } }
            swapMaxMin(arr, n);
            for (int i = 0; i < n; i++) {
                printf("%d ", arr[i]);
            }
            
            printf("\n");
            return 0;
        }