A = [ input() for i in range(3) ]

L = int( A[0] )
M = int( A[1] )
N = int( A[2] )

X = L + 25 * M + 100 * N 

cal = X % 1000

a100 = int( cal / 100 )

cal =  cal % 100

a25 = int( cal / 25 )

cal = cal % 25

a1 = cal

print( a1 + a25 + a100 )