L = int(input())
M = int(input())
N = int(input())

import math

chokin = L * 100 + M * 25 + N

shihei = math.floor( chokin / 1000)
kouka100 = math.floor( (chokin - shihei * 1000 ) / 100)
kouka25 = math.floor( (chokin - ((shihei * 1000) + (kouka100 * 100))) / 25 )
kouka1 = chokin - (shihei * 1000 + kouka100 *100 + kouka25 *25)

print(kouka100 + kouka25 + kouka1)