#!/usr/bin/env python3

from math import factorial

def main(k):
    n = 10
    ascend = binomial(n+k-1, k)
    descnd = sum(binomial(n+i-1, i) for i in range(1,k+1))
    repeat = n*k + 1 # why 1
    return ascend + descnd - repeat

def binomial(n, k):
    return factorial(n) // (factorial(k)*factorial(n-k))

#print(main(6))
#print(main(10))
print(main(100))