PARPOLY: Need explaination

Can anybody explain d question with few more examples ?

for f(400,6,X)
are all combinations of 2 , 4 and 398 0’s will be considered ?

The problem statement is clear enough. Further examples are not to be discussed during a live contest. If you want to seek any clarification with respect to the problem statement kindly post on the comments section in the problem page itself. The admins will look into it.

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