Problem:
Score: 100 points

Problem Statement

In this problem, a date is written as Y-M-D. For example, 2019-11-30 means November 30, 2019.

Integers M_1, D_1, M_2, and D_2 will be given as input.

It is known that the date 2019-M_2-D_2 follows 2019-M_1-D_1.

Determine whether the date 2019-M_1-D_1 is the last day of a month.

Constraints

Both 2019-M_1-D_1 and 2019-M_2-D_2 are valid dates in the Gregorian calendar.

The date 2019-M_2-D_2 follows 2019-M_1-D_1.

Input

Input is given from Standard Input in the following format:

M_1 D_1
M_2 D_2

Output

If the date 2019-M_1-D_1 is the last day of a month, print 1; otherwise, print 0.

Sample Input 1

11 16
11 17

Sample Output 1

0

November 16 is not the last day of a month.

Sample Input 2

11 30
12 1

Sample Output 2

1

November 30 is the last day of November.

Solution in Ruby (2.7.1) (judge verdict: Wrong Answer)

def check(price)
val1, val2 = price.to_i.divmod(100)

#p "val1="+val1.to_s
#p "val2="+val2.to_s

if (val1==0) then
  # 99円以下のとき
  0
end

if (val1==1) && (val2>=6) then
  #106円から199円のとき
  0
end

val3, val4 = val2.to_i.divmod(5)

#p "val3="+val3.to_s
#p "val4="+val4.to_s

if (val3+val4) < val1 then
  1
else
  0
end
end