Codeforces Round #111 (Div. 2) D.Edges in MST(最小生成树+桥 MST必要边/可行边/不可行边)
题目n(nusingnamespacestd;constintN=1e5+10;#definepbpush_back#definefifirst#definesesecond#definesci(a)scanf("%d",&(a))#definerep(i,a,b)for(inti=(a);iP;structedge{intu,v,w,id;booloperatore[N];intfind(int