Các cuộc thi năm 2023
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.. toctree:: 
    :maxdepth: 1
    
    nsucrypto/index
    siberian-maths-contest/index
    internet-olympiad/index
    amateursCTF
    backdoorCTF
    googleCTF
    diceCTF
    UTCTF
    wolvCTF