Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v1[nod].size();++i) ~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v2[nod].size();++i) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol[p].size()>ans) ~~~~~~~~~~~~~^~~~ main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol[p].size();++i) g<<sol[p][i]<<' '; ~^~~~~~~~~~~~~~