Compilare: user.cpp: In function ‘int Arie(int)’: user.cpp:95:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<v[ind].size();k++) ^ user.cpp: In function ‘void Solve()’: user.cpp:106:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i].size()<k) ^ user.cpp:120:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ^ user.cpp:125:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i].size()<k && Q_viz[i]==0) ^ user.cpp:132:15: warning: unused variable ‘aar’ [-Wunused-variable] int sol=0,aar=0; ^