Compilare: user.cpp: In function ‘int mycheck(int)’: user.cpp:27:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();i++,aux++){ ^ user.cpp: In function ‘int main()’: user.cpp:42:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();i++){ ^ user.cpp:47:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=a.size()-1;i<b.size();i++){ ^ user.cpp:60:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rez.size();i++) ^