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#include <iostream> #include <algorithm> using namespace std; #define MAX 1000 int main() { int n; int arr[MAX]; while (cin >>n) { for(int i=0;i<n;i++){ cin>>arr[i]; } sort(arr,arr+n); cout<<arr[n-1]<<endl; if(n==1) cout<<-1; else{ for(int i=0;i<n-1;i++){ cout<<arr[i]<<" "; } } } return 0; }