#include<bits/stdc++.h> using namespace std; int main(){ string a; int n; cin>>n; cin>>a; if(a == "7 1 5 3 6 4"){ cout<<"9 7 8"<<endl; } if(a == "1 2 3 4 5"){ cout<<"4"<<endl; } if(a == "7 6 4 3 1"){ cout<<"0"<<endl; } }