Compilare: user.cpp: In function ‘int main()’: user.cpp:90:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(k >= ciclu[cicli[i]].size() && k > 0) ^ user.cpp:100:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k > 0 && k != ciclu[cicli[i]].size()-1) ^