Party#5329

Party

1 sekondë
128 megabajt
Shumë e lehtë

How many ways are there to choose out of participants in the summer computer school, each of whom will receive kefir? Print the answer modulo .

Hyrja

Two integers and k\:(0 \le k \le n \le 500).

Dalja

Print the number of ways modulo .

Shembuj

Shembulli 1

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