N = int(input())

ans = 0
for t in range(N // 5 + 1):
    if 5*t > N: continue
    if 5*t == N: 
        ans += 1
        continue
    for g in range(t + 1):
        if 5*t + 2*g > N: continue
        if 5*t + 2*g == N:
            ans += 1
            continue
        for pg in range((N - (5*t + 2*g)) // 3 + 1):
            if 5*t + 2*g + 3*pg > N: continue
            if 5*t + 2*g + 3*pg == N:
                ans += 1
                continue

print(ans)