Compilare: user.cpp: In function ‘int main()’: user.cpp:107:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < st.size() ; i ++ ) ^ user.cpp:109:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < dr.size() ; i ++ ) ^ user.cpp:45:24: warning: variable ‘start’ set but not used [-Wunused-but-set-variable] int teste, nr, DR, start, end; ^ user.cpp:45:31: warning: unused variable ‘end’ [-Wunused-variable] int teste, nr, DR, start, end; ^ user.cpp:46:12: warning: unused variable ‘sol’ [-Wunused-variable] double sol; ^