import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import numpy as np

N = int(read())

x = np.ones(N+1,np.int64)

y = x.copy()
for _ in range(7):
    y = np.convolve(x,y)

answer = y[6*N]

print(answer)