Powerful Digit Sum¶

Python's unlimited precision ints save the day again!

In [1]:
def digit_sum(n):
    total = 0
    while n != 0:
        total += n % 10
        n //= 10
    
    return total
In [2]:
max(digit_sum(a^b) for a in range(1, 100) for b in range(1, 100))
Out[2]:
972

Copyright (C) 2025 filifa¶

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