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

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

dx = int( L/25 )

L = L - dx * 25
M = dx + M

dx = int( 25 * M / 100 )

M = M - dx * 4
N = dx + N

dx = int( 100 * N / 1000 )

N = N - dx * 10
O = dx

print( L + M + N )