Compilare: user.cpp: In function ‘int main()’: user.cpp:27:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<In[i].size();j++) ^ user.cpp:29:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Out[i].size();j++) ^ user.cpp:30:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<v.size();k++) ^ user.cpp:33:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<L[i].size();j++) ^ user.cpp:37:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<v.size();k++) ^ user.cpp:53:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<In[i].size();i++) ^