Compilare: main.cpp: In function 'void set_true(int)': main.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0; i < buckets[x_bucket].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~