Compilare: main.cpp: In function 'void dfs(int)': main.cpp:11:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[a].size(); i++) ~^~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<GT[a].size(); i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<CTC[i].size(); j++) ~^~~~~~~~~~~~~~