Compilare: main.cpp: In function 'void normalize(std::vector<int>&)': main.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:37:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | while (i < v.size()) { | ~~^~~~~~~~~~ main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | while (j < v.size() && c[i].first == c[j].first) | ~~^~~~~~~~~~ main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:139:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<Query> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | for (int i = 0; i < vq.size(); i++) { | ~~^~~~~~~~~~~