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  1. #include <bits/stdc++.h>
  2. #include <set>
  3. using namespace std;
  4.  
  5. int main() {
  6.     int q; cin>>q;
  7.     while(q--) {
  8.         int n ; cin>>n;
  9.         set<int,greater<>> s;
  10.         int y;
  11.         while(n--) {
  12.             cin>>y;
  13.             s.insert(y);
  14.         }
  15.         if(s.size()<=1) cout<<-1<<endl;
  16.         else {
  17.             auto it = s.begin();
  18.             it++;
  19.             cout<<*it<<endl;
  20.         }
  21.     }
  22.  
  23. }
Success #stdin #stdout 0s 5320KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/AGMQO6
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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