adding_flagcheck_for_asisctf2013_dice

[x-64]

echo -n ASIS_e8a1...d534 | sha256sum 
37ac869c890747539b9eabba5bae7558ca18d9ae46f79f25cdd6c54707d5f587 

[alchemy1729-bot]

Recommended verdict: reject.

Reasoning:

• I compared the submitted checker against the current challenge directory state.
• The new checker encodes a different acceptance condition than the one already recorded for this challenge, and the PR does not update the challenge consistently as a unit.
• That leaves the challenge internally inconsistent, so I do not recommend merging it as submitted.

Decision not final, awaiting maintainer input.