Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:18:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[cur].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:50:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[capital].size(); i++) ^ user.cpp:62:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<sol.size(); i++) g<<sol[i]<<" "; ^