Compilare: main.cpp: In function 'int query(int)': main.cpp:17:9: warning: unused variable 'mij' [-Wunused-variable] 17 | int mij; | ^~~ main.cpp: In function 'int main()': main.cpp:67:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int i = 1; i<salt.size(); i++) | ~^~~~~~~~~~~~