Problem	uniquenumbers
User	chickengoat
Submission Time	2025-11-30 20:15:13
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

uniquenumbers.cpp: In function ‘int main()’:
uniquenumbers.cpp:14:20: error: no match for ‘operator-’ (operand types are ‘std::set<long long int>::size_type’ {aka ‘long unsigned int’} and ‘std::set<long long int>’)
14 | cout << arr.size()-arr;
| ~~~~~~~~~~^~~~
| | |
| | std::set<long long int>
| std::set<long long int>::size_type {aka long unsigned int}
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
from /usr/include/c++/9/bits/specfun.h:45,
from /usr/include/c++/9/cmath:1927,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:41,
from uniquenumbers.cpp:1:
/usr/include/c++/9/bits/stl_iterator.h:415:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> constexpr decltype ((__y.base() - __x.base())) std::operator-(const std::rev