Second Largest Element Without Sorting
Find the second largest distinct element in an array without sorting it.
Input format
The first line contains N. The second line contains N space-separated integers.
Output format
Print the second largest distinct element. If it does not exist (all elements equal), print -1.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
5
12 35 1 10 34Expected output
34Example 2
Input
3
10 10 10Expected output
-1