k=0 #1000yen
l=int(input()) #100yen
m=int(input()) #25yen
n=int(input()) #1yen

m+=int(n/25)
n-=25*int(n/25)
l+=int(m/4)
m-=4*int(m/4)
k+=int(l/10)
l-=10*int(l/10)

coin=l+m+n

print(coin)