reverse.cpp: In function 'std::vector<long long int> reverse(std::vector<long long int>)':
reverse.cpp:5:10: error: 'reverse' is not a member of 'std'; did you mean 'reverse'?
5 | std::reverse(a.begin(),a.end());
| ^~~~~~~
reverse.cpp:3:24: note: 'reverse' declared here
3 | std::vector<long long> reverse(std::vector<long long> a)
| ^~~~~~~
reverse.cpp:6:32: error: expected primary-expression before 'a'
6 | return std::vector<long long>a;
| ^
reverse.cpp:6:32: error: expected ';' before 'a'
6 | return std::vector<long long>a;
| ^
| ;
reverse.cpp:6:32: warning: statement has no effect [-Wunused-value]