Compilare: main.cpp: In function 'int main()': main.cpp:60:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<qr>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | while(j < querys[i].size() && querys[i][j].dr <= endbucket) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:66:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<qr>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | while(j < querys[i].size()) { | ~~^~~~~~~~~~~~~~~~~~