240103

# print('hello :)', end=' ')

# print('World')

#

# print('Hello', 'World', 'Apple', 's', sep=', ')

# print ('Hello')

# print ('Hello World')

# print('Hello')

# print('World')

# print("'Hello'")

# print('"Hello World"')

# print('"!@#$%^&*()\'')

# print('\"C:\\Download\\\'hello\'.py\"')

# print('print(\"Hello\\nWorld\")')

'''

정수형

int -1, -2, -3, 0, 1, 2, 3

실수형

float -5.2, +3.2, 0.0

문자형

chr ASCII

문자열

str

부울형

bool

True / False

'''

# x = input()

# y = input()

#

# print(x, y)

# x, y = input().split()

# x = int(x)

# y = int(y)

#

# print(x, y)

# print(x + y)

# a=input()

# print(a)

# a=input()

# n=int(a)

# print(n)

# a=input()

# n=float(a)

# print(n)

# a=input()

# b=input()

# x=int(a)

# y=int(b)

# print(x)

# print(y)

# a,b=input().split(':')

# print(a,b,sep=':')

# y, m, d = input().split('.')

# print(d, m, y, sep='-')

# l,r = input().split('-')

# print(l,r, sep='')

# a=input()

# b=input()

# print(b)

# print(a)

# n=input()

# n=int(n)

# print(-n)

# a=input()

# n=ord(a)

# print(chr(n+1))

# a,b=input().split(' ')

# a=int(a)

# b=int(b)

# c=a-b

# print(c)

# a,b=input().split(' ')

# a=float(a)

# b=float(b)

# m=a*b

# print(m)

# w,n=input().split( )

# n=int(n)

# print(w*n)

# n=input()

# s=input()

# n=int(n)

# print(s*n)

# a,b=input().split( )

# a=int(a)

# b=int(b)

# print(a**b)

# a,b=input().split( )

# a=float(a)

# b=float(b)

# print(a**b)

#

# a,b=input().split( )

# a=int(a)

# b=int(b)

# print(a//b)

# a,b=input().split( )

# a=int(a)

# b=int(b)

# print(a%b)

# a,b=input().split( )

# a=float(a)

# b=float(b)

# print('%.3f' %(a/b))

# a,b=input().split( )

# a=int(a)

# b=int(b)

# c=a+b

# d=a-b

# e=a*b

# f=a//b

# g=a%b

# h='%.2f'%(a/b)

# print(c, d, e, f, g, sep='\n')

# print(c)

# print(d)

# print(e)

# print(f)

# print(g)

# print(h)

# a,b,c=input().split( )

# a=int(a)

# b=int(b)

# c=int(c)

# d=a+b+c

# e='%.2f'%(d/3)

# print(d, e)

# f=input()

# f=float(f)

# print(f)

# print(f)

# print(f)

# a,b=input().split( )

# a=int(a)

# b=int(b)

# print(a)

# print(b)

# a,b=input().split( )

# print(b,a)

# a=input()

# print(a,a,a)

# w=input()

# print(w[0])

# print(w[1])

# print(w[2])

# print(w[3])

# print(w[4])

# a,b=map(int, input().split( ))

# print(a<b)

# a,b=map(int, input().split( ))

# print(a==b)

# a,b=map(int,input().split( ))

# print(b>=a)

# a,b=map(int, input().split( ))

# print(a!=b)

# a=input()

# a=int(a)

# print(bool(a))

# a=input()

# a=int(a)

# print(bool(not a))

# a,b=input().split( )

# a=bool(int(a))

# b=bool(int(b))

# print(a and b)

# a,b=input().split( )

# a=bool(int(a))

# b=bool(int(b))

# print(a or b)

# a,b=input().split( )

# a=bool(int(a))

# b=bool(int(b))

# print((a and not b) or (not a and b))

# a,b=input().split( )

# a=bool(int(a))

# b=bool(int(b))

# print((a and b) or (not a and not b))

# a,b=input().split( )

# a=bool(int(a))

# b=bool(int(b))

# print(not a and not b)

# a=(int(input()))

# if bool(a<10):

# print('small')

# a=int(input())

# if bool(a<10):

# print('small')

# if bool (a>=10):

# print ('big')

# a,b= input().split( )

# a=(int(a))

# b=(int(b))

# if a>b:

# print ('>')

# if b>a:

# print('<')

# if b==a:

# print('=')

# a,b=input().split( )

# a=int(a)

# b=int(b)

# if a>b:

# print (a-b)

# if b>a:

# print (b-a)

# if a==b:

# print ('0')

# a=int(input())

# if a % 7 == 0:

# print ('multiple')

# else:

# print ('not multiple')

# a=int(input())

# if a % 2 == 0:

# print('even')

# else:

# print('odd')

# a=float(input())

# if 50 <= a <= 60:

# print('win')

# else:

# print('lose')

# a=int(input())

# if (30 <= a <= 40) or (60 <= a <= 70):

# print('win')

# else:

# print('lose')

# a=int(input())

# if (50 <= a <= 70):

# print('win')

# elif (a % 6 == 0):

# print('win')

# else:

# print('lose')

# a=int(input())

# if a % 2 == 1:

# print('oh my god')

# else:

# print('enjoy')

# a, b = input().split( )

# a=int(a)

# b=int(b)

# if (a % 2 == 1):

# print('홀수+',end='')

# else:

# print('짝수+',end='')

# if (b % 2 == 1):

# print('홀수',end='')

# else:

# print('짝수',end='')

#

# if (a % 2 == 1) and (b % 2 == 1):

# print('=짝수')

# if (a % 2 == 0) and (b % 2 == 1):

# print ('=홀수')

# if (a % 2 == 1) and (b % 2 == 0):

# print ('=홀수')

# if (a % 2 == 0) and (b % 2 == 0):

# print('=짝수')

# a,b,c=input().split( )

# a=int(a)

# b=int(b)

# c=int(c)

# d=(a-b+c)

# if (d % 10 == 0):

# print('대박')

# else:

# print('그럭저럭')

# a,b,c = input().split( )

# a=int(a)

# b=int(b)

# c=int(c)

# d=(a+b+c)

# e=(d//100)

# if e % 2 == 0:

# print ('대박')

# else:

# print ('그럭저럭')

# a, b, c = input().split( )

# a=int(a)

# b=int(b)

# c=int(c)

# if (170 < a) and (170 < b) and (170 < c):

# print('PASS')

# else:

# print('CRASH')

a,b = input().split( )

a=int(a)

b=int(b)

c=(89-a)/5

c=int(c)

if a==90:

print(b)

elif a<= 90:

print(b + c + 1)