Anyone please help me with finding what is wrong in my code for CHEF DAG.I have spend hours in this.Please help me find a bug.
Solution link:-CodeChef: Practical coding for everyone
hey why we need to store the reverse flow for an edge in the residual graph even if this edge is a directed one from x to y ?
doubt regarding the max flow in a DAG.
plz help me i m confused!
@everule1 hey can you plz tell me why you said that it is optimall to have every node max 1 parent.As it is said in the question outdegree should be max 1 which itself says that max 1 children they have . Lets consider this example
3 2
1 2 3
2 1 3
if we take parent should be max 1 then answer should be 3 0 0
but if we take children should be 1 then ans should be 3 3 0 .
Yes, but 2 nodes still have indegree 0. We have to minimise the number of nodes with indegree 0.
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@everule1 Ohh thanks I misunderstood question as I was just consider to minimize the 0 in the array instead what you said above .Now I understood thanks…
hey bro! when are u posting the official editorial??
During contest I was unable to generate such permutation.
but now I have generates such permutation which gives wrong answer 
Here it is
1
7 4
3 7 5 6 1 2 4
3 5 6 7 1 4 2
1 4 5 2 3 6 7
1 5 2 4 3 7 6
My answer is
5
2 0 6 0 6 0 0
while the correct ans is
4
4 0 6 0 2 0 0
Thank you