import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)

from math import floor

p, q, a = map(int, readline().split())
p *= 0.01
q *= 0.01
cnt = 10 ** 9 - (10 ** 6 + a) if floor((1 + p) * 10 ** 9) < floor((1 + q) * 10 ** 9) + a else 0
for i in range(1, 10 ** 6 + a + 1):
    cnt += 1 if floor((1 + p) * i) < floor((1 + q) * i) + a else 0
print(cnt)