Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:15:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod1].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:20:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[nod2].size();j++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:45:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[i].size();j++) ~^~~~~~~~~~~~