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

T = (L * 100) + (M * 25) + (N * 1)

S = T // 1000
T -= S * 1000
H = T // 100
T -= H * 100
Q = T // 25
T -= Q * 25
I = T // 1

print(H + Q + I)