Compilare: user.cpp: In function ‘void expand()’: user.cpp:36:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graph[nod].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:67:38: warning: too many arguments for format [-Wformat-extra-args] scanf("%d%d",&x,&y,&c); ^ user.cpp:76:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graph[1].size();++i) ^