s = [0] * 3
for i in range(3):
    s[i] = int(input())
while s[2] >= 25:
    s[2] -= 25
    s[1] += 1
while s[1] >= 4:
    s[1] -= 4
    s[0] += 1
while s[0] >= 10:
    s[0] -= 10
print(sum(s))