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…thon to C++23 Replaces python/1497.py with solutions/1401-1500/1497-check-if-array-pairs-are-divisible-by-k/. The original Python only checked mirrored pairs (arr[i] with arr[n-1-i]), which is a stricter condition than the actual problem (any valid pairing) — it happened to pass its own tests but isn't the real algorithm. Replaced with the standard remainder-counting approach: count arr[i] % k for each element, then require freq[0] to be even and freq[r] == freq[k - r] for every other remainder.
…y-pairs-are-divisible-by-k
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Summary
python/1497.pyto C++23 atsolutions/1401-1500/1497-check-if-array-pairs-are-divisible-by-k/.arr[i]witharr[n-1-i]) — a stricter condition than the real problem (any valid pairing). It passed its own tests but wasn't the general algorithm. Replaced with the standard remainder-counting approach.python/1497.py.Base is
chore/cpp23-migration(#4) — retarget tomainonce that lands.Test plan