Compilare: main.cpp: In function 'int main()': main.cpp:91:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<query>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for (int i = 0; i < q.size(); ++i) { | ~~^~~~~~~~~~ main.cpp:111:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<query>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for (int i = 0; i < q.size(); ++i) { | ~~^~~~~~~~~~