#abc166b. [abc166_b]Trick or Treat

[abc166_b]Trick or Treat

nn个人,kk种糖果,第ii种糖果只有did_i个人有,分别是编号为Ai,1,Ai,2,Ai,3,...,Ai,diA_{i,1},A_{i,2},A_{i,3},...,A_{i,d_i}的人.求有多少人一个糖果也没有.