O-Loto
Klipan is keen to pay Loto ticket streaming to win Katica (main prize of 64 billion Europounds) even he no idea of howmany ways is possible to take K numbers from set of N different numbers. Help him to solve this dilema.
Image: loto
InputIn first and only row of standard input are integers K and N separated by empty space. (1 <= K <= N <= 64)
OutputIn first and only row of standard output write number pf ways described above.
NOTICE: Result will be less then 2^64.
Example 1:
Input:
4 4Output:
1Example 2:
Input:
5 10Output:
252Example 3:
Input:
5 30Output:
142506Submit solution
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