Compilare: main.cpp: In function 'll getfrom(std::vector<int>)': main.cpp:45:10: warning: unused variable 'ceva' [-Wunused-variable] 45 | bool ceva = 0; | ^~~~ main.cpp:56:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 56 | for(auto [X, b] : freq) { | ^ main.cpp:52:8: warning: unused variable 'ceva' [-Wunused-variable] 52 | bool ceva = 0; | ^~~~ main.cpp: In function 'void bkt(std::vector<int>)': main.cpp:67:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 67 | if(v.size() > 2 * n + 2) | ~~~~~~~~~^~~~~~~~~~~