Problem:
Score : 100 points

Problem Statement

How many hours do we have until New Year at M o'clock (24-hour notation) on 30th, December?

Constraints

1≤M≤23

M is an integer.

Input

Input is given from Standard Input in the following format:

M

Output

If we have x hours until New Year at M o'clock on 30th, December, print x.

Sample Input 1

21

Sample Output 1

27

We have 27 hours until New Year at 21 o'clock on 30th, December.

Sample Input 2

12

Sample Output 2

36

Solution in PyPy3 (2.4.0) (judge verdict: Runtime Error)

def isprime(z):
    if z < 2:return False
    if z == 2:return True
    i = 2
    while i*i <= z:
        if z % i == 0:
            return False
        i+=1
    return True
n = int(input())
for i in range(n):
    l, r = map(int, input().split())
    c = 0
    for j in range(l, r+1):
        if isprime(j) and isprime((j+1)/2):
            c+=1
    print(c)