import sys
from collections import defaultdict

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    prim=[2,3,5,7,11,13]
    comp=[4,6,8,9,10,12]
    mul=defaultdict(int)
    for p in prim:
        for c in comp:
            mul[p*c]+=1
    k=int(input())
    print(mul[k]/36)

main()