Задача с массивом 16-ой системой счисления

with open('27-27a.txt', 'r') as f:
  data = f.read()
 
xx = [int(i) for i in data.split()]
N = xx[0]
 
 
...
 
 
with open('27-27b.txt', 'r') as f:
  data = f.read()
 
xx = [int(i) for i in data.split()]
N = xx[0]

with open('27-27a.txt') as file:
    n = int(file.readline())
    data =[list(map(int, file.readline().split())) for i in range(n)]
 
delta = [abs(a - b) for a, b in data if a != b] 
result = sum(max(i) for i in data)
if hex(result)[-1] != 'a':
    print(result)
else:
    print(result - min(delta))
    
with open('27-27b.txt') as file:
    n = int(file.readline())
    data =[list(map(int, file.readline().split())) for i in range(n)]
 
delta = [abs(a - b) for a, b in data if a != b] 
result = sum(max(i) for i in data)
if hex(result)[-1] != 'a':
    print(result)
else:
    print(result - min(delta))

delta = [abs(a - b) for a, b in data if abs(a - b) % 16]

def foo(filename):
    with open(filename) as file:
        n = int(file.readline())
        data =[list(map(int, file.readline().split())) for i in range(n)]
     
    delta = [abs(a - b) for a, b in data if abs(a - b) % 16]
    result = sum(max(i) for i in data)
    print(result if hex(result)[-1] != 'a' else result - min(delta))
        
foo('27-27a.txt')
foo('27-27b.txt')