c1 = int(input())
c25 = int(input())
c100 = int(input())

c1, c25 = c1 % 25, c25 + c1 // 25
c25, c100 = c25 % 4, c100 + c25 // 4
c100 = c100 % 10

print (str(c1+c25+c100))