---

def event_score(temp, noise, motion, battery):
    score = 0

    if temp > 35:
        score += 2
    if noise > 80:
        score += 2
    if motion > 5:
        score += 3
    if battery < 20:
        score += 1

    return score


temp, noise, motion, battery = map(int, input().split())
print(event_score(temp, noise, motion, battery))