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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. // this repeats the entry in set, dont know how to overcome this???
  4. struct f{
  5. 	bool  operator()( int a, int b){
  6. 		return a<b;
  7. 	}
  8. };
  9. int main() {
  10. 	set<int,f> s;
  11. 	s.insert(2);
  12. 	s.insert(1);
  13. 	s.insert(3);
  14. 	s.insert(2);
  15. 	cout<<s.size()<<"\n";
  16. 	for(auto x: s) cout<<x<<" ";
  17. }
Success #stdin #stdout 0s 15240KB
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Standard input is empty
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3
1 2 3
https://ideone.com/FhzWw2
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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