Compilare: main.cpp: In function 'void dfs(int)': main.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<V[x].size(); i++) ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:25:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<V1[x].size(); i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Sol.size();i++,g<<'\n') ~^~~~~~~~~~~ main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Sol[i].size();j++) ~^~~~~~~~~~~~~~