/in/foo.cc: In function 'int main()':
/in/foo.cc:26:46: warning: format '%lld' expects argument of type 'long long int*', but argument 4 has type 'int*' [-Wformat=]
   scanf("%d%d%lld",&eg[i].x,&eg[i].y,&eg[i].w);
                                              ^