L = int(raw_input())
M = int(raw_input())
N = int(raw_input())

sum = 100*L + 25*M + N
#print sum

sum = sum - (sum/1000)*1000
#print sum
coinL = sum/100
#print coinL
sum = sum - (sum/100)*100
#print sum
coinM = sum/25
#print coinM
sum = sum - (sum/25)*25
#print sum

ans = coinL + coinM + sum
print ans