Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfsT(int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<GT[nod].size(); i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<components[principal].size(); i++) aux[++nr]=components[principal][i]; ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:121:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=components[principal].size();i++) g<<sol[i]<<' '; ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~