Compilare: user.cpp: In function ‘int main()’: user.cpp:50:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < girls.size(); k++) ^ user.cpp:53:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < dummy.size(); i++) { ^ user.cpp:65:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = idx+1; i < dummy.size(); i++) ^ user.cpp: In function ‘int binSearch(int)’: user.cpp:37:1: warning: control reaches end of non-void function [-Wreturn-type] } ^