Compilare: main.cpp: In function 'void dfs(int)': main.cpp:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<inv[x].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<comp[i].size();j++) ~^~~~~~~~~~~~~~~ main.cpp:101:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<comp[grupa[i]].size();j++) ~^~~~~~~~~~~~~~~~~~~~~~