l = int(input())
m = int(input())
n = int(input())
#l;100, m:25, n:1
a = n*1//25
x = n-a*25
m = m+a
b = m*25//100
y = (m*25%100)//25
l = l+b
c = l*100//1000
z = (l*100%1000)//100
print(x+y+z)