# n,m = map(int,input().split())
# ar = list(map(int,input().split()))
# ar.sort()

# s = 0
# mini = 100000000

# for i in range(m) :
# 	s += ar[i]
# 	if mini > s :
# 		mini = s
# if mini < 0 :
# 	mini *= (-1)
# else :
# 	mini = 0 
# print(mini)


# t = int(input())
# for i in range(t) :
# 	angle = int(input())

# 	if 360%(180-angle) == 0 :
# 		print("YES")

# 	else :
# 		print("NO")



# s,n = map(int,input().split())
# dct = {}

# for i in range(n) :
# 	a,b = map(int,input().split())
# 	try :
# 		dct[a] += b
# 	except :
# 		dct[a] = b 

# dct = dict(sorted(dct.items()))
# lst = list(dct.keys())

# flag =True

# for i in range(len(lst)) :
# 	if lst[i] < s :
# 		s += dct[lst[i]] 
# 	else :
# 		flag = False
# 		break

# if flag :
# 	print("YES")
# else :
# 	print("NO")

# 5 10
# 20 1
# 4 3
# 5 1
# 100 1
# 4 2
# 101 1
# 10 0
# 10 2
# 17 3
# 12 84

# print(dct)
# print(lst)


# n,a,b = map(int,input().split())
# print((n+1) - max(a+1,n-b))

# a = str(input())
# b = str(input())
# c = ""
# for i in a :
# 	c = i + c	
# if b == c :
# 	print("YES")
# else :
# 	print("NO")
import math

n,x,y = map(int,input().split())
a = int(math.ceil((y/100)*n)) - x
print(a)