Compilare: main.cpp: In function 'int main()': main.cpp:219:34: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'i64' {aka 'long int'} [-Wsign-compare] 219 | if (ans.size() + sc.size() >= n) { | ~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:222:45: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'i64' {aka 'long int'} [-Wsign-compare] 222 | } else if (ans.size() + sc.size() * 2 >= n) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:225:49: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'i64' {aka 'long int'} [-Wsign-compare] 225 | } else if (ans.size() * 2 + sc.size() * 2 >= n) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:216:12: warning: unused variable 'i' [-Wunused-variable] 216 | for (int i : range(q)) { | ^