题解 | #特殊排序#

//这困难个啥劲。。。
#include <iostream>
#include <cstdio>
#include <algorithm>

using namespace std;

int main(){
    int n;
    int arr[1000];
    while (scanf("%d",&n) != EOF){
        for (int i = 0; i < n; ++i) {
            scanf("%d",&arr[i]);
        }
        sort(arr,arr + n);
        printf("%d\n",arr[n - 1]);
        if (n == 1){
            printf("-1\n");
        } else{
            for (int i = 0; i < n - 1; ++i) {
                printf("%d ",arr[i]);
            }
        }
    }
}