Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<comp[i].size();j++) ~^~~~~~~~~~~~~~~ main.cpp:69:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<comp[i].size();j++) ~^~~~~~~~~~~~~~~ main.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<v[nod].size();k++) ~^~~~~~~~~~~~~~ main.cpp:92:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<comp[frz[st]].size();i++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:102:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<v2[nod].size();k++) ~^~~~~~~~~~~~~~~