def main():
  from sys import stdin
  from itertools import permutations
  readline=stdin.readline
  n = int(readline())
  cnt = 0
  for t in range(n//2+1):
    for g in range(0, t+1):
      for pg in range(n//3+1):
        if 5*t + 2*g + 3*pg == n:
          cnt += 1
  print(cnt)
main()