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

s = 0
f = 0
h = 0

G = L * 100 + M * 25 + N

#print(G)
for i in range(3):
    if G > 1000:
        s = G // 1000
        G = G - (1000 * s)
        #print(G)
    elif G > 100:
        f = G // 100
        G = G - (100 * f)
        #print(G)
    elif G > 25:
        h = G // 25
        G = G - (25 * h)
        #print(G)
    
print(int(G + h + f))