/in/foo.cc: In member function 'void Graph::Ins(int, int, int)':
/in/foo.cc:18:62: warning: statement has no effect [-Wunused-value]
  void Ins(int a,int b,int c){debug(">>>Ins %d %d %d\n",a,b,c);e[++ce]=(R){kom[a],a,b,c};kom[a]=ce;}
                                                              ^
/in/foo.cc: In member function 'void Graph::Throne(int, int)':
/in/foo.cc:35:33: warning: statement has no effect [-Wunused-value]
   debug("Throne %d %d\n",u,pope);
                                 ^
/in/foo.cc: In member function 'void Graph::SP(int)':
/in/foo.cc:57:25: warning: statement has no effect [-Wunused-value]
   debug("%lld\n",dis[s]);
                         ^
/in/foo.cc: In function 'int segTr::build(int, int, int*, bool)':
/in/foo.cc:98:59: warning: statement has no effect [-Wunused-value]
   debug("Now building the segtree: %d %d %d %d\n",l,r,x,w);
                                                           ^
/in/foo.cc:110:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   A[x].ls=build(l,l+r>>1,li,w);
                   ~^~
/in/foo.cc:111:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   A[x].rs=build((l+r>>1)+1,r,li,w);
                  ~^~
/in/foo.cc: In function 'void virTr::BVT()':
/in/foo.cc:155:18: warning: statement has no effect [-Wunused-value]
   debug("BVT:\n");
                  ^
/in/foo.cc:166:18: warning: statement has no effect [-Wunused-value]
    debug("%d ",i);
                  ^
/in/foo.cc:168:39: warning: statement has no effect [-Wunused-value]
    debug("V.Ins %d %d\n",p[top],li[i]);
                                       ^
/in/foo.cc:172:14: warning: statement has no effect [-Wunused-value]
   debug("\n");
              ^
/in/foo.cc: In function 'void virTr::duang(int, int, int)':
/in/foo.cc:177:36: warning: statement has no effect [-Wunused-value]
   debug("duang %d %d\n",u,T.dep[u]);
                                    ^
/in/foo.cc:185:30: warning: statement has no effect [-Wunused-value]
    debug("  u=%d v=%d\n",u,v);
                              ^
/in/foo.cc:190:37: warning: statement has no effect [-Wunused-value]
    debug("    O %d %d %d\n",l,r,aid);
                                     ^
/in/foo.cc:192:39: warning: statement has no effect [-Wunused-value]
    debug("    I %d %d %d\n",L,l-1,aid);
                                       ^
/in/foo.cc:194:39: warning: statement has no effect [-Wunused-value]
    debug("    I %d %d %d\n",r+1,R,aid);
                                       ^
/in/foo.cc: In function 'void virTr::werken()':
/in/foo.cc:203:60: warning: statement has no effect [-Wunused-value]
   debug("                         rta %d rtb %d\n",rta,rtb);
                                                            ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:229:22: warning: statement has no effect [-Wunused-value]
  debug("%d %d\n",m,k);
                      ^
/in/foo.cc:233:15: warning: statement has no effect [-Wunused-value]
   debug("T\n");
               ^
/in/foo.cc:236:15: warning: statement has no effect [-Wunused-value]
   debug("F\n");
               ^
/in/foo.cc:239:15: warning: statement has no effect [-Wunused-value]
   debug("G\n");
               ^
/in/foo.cc:250:46: warning: statement has no effect [-Wunused-value]
  debug("Input done.\n\n\n\n\n\n\n\n\n\n\n\n");
                                              ^
/in/foo.cc:252:22: warning: statement has no effect [-Wunused-value]
  debug("%d %d\n",m,k);
                      ^
/in/foo.cc:255:42: warning: statement has no effect [-Wunused-value]
   debug("Now making a web around %d\n",i);
                                          ^
/in/foo.cc:261:22: warning: statement has no effect [-Wunused-value]
  debug("%d %d\n",m,k);
                      ^
/in/foo.cc:262:20: warning: statement has no effect [-Wunused-value]
  debug("%d\n",G.ce);
                    ^
/in/foo.cc:270:49: warning: statement has no effect [-Wunused-value]
    debug("dis %d %d\n",F.e[j].v,G.dis[F.e[j].v]);
                                                 ^
/in/foo.cc:273:20: warning: statement has no effect [-Wunused-value]
   debug("%d\n",res);
                    ^
/in/foo.cc:275:14: warning: statement has no effect [-Wunused-value]
   debug("\n");
              ^