a = []
for i in range(3):
    a.append(int(input()))

coins = sum(a)
while (True):
    if (a[2] >= 25):
        a[2] -= 25
        a[1] += 1
        continue
    break

while(True):
    if(a[1] >= 4):
        a[1] -= 4
        a[0] += 1
        continue
    break

while(True):
    if(a[0] >= 10):
        a[0] -= 10
        continue
    break

coinsA = sum(a)
print(coinsA)