import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

A,B,C = map(int,read().split())

x = 100 * A + 25 * B + C; x %= 1000

answer = 0
for coin in [100,25,1]:
    answer += x // coin; x %= coin
print(answer)