Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:24:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:104:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Sol.size();i++) ^ user.cpp:110:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=poz+1;i<Sol.size();i++) ^