cPP14 - Related information

  • Simple combinatorial problem, disordered pair

    topic description Mathematical Combinatorial problems sources of topics and their own ideas competitive programs what result do you expect? What is the error message actually seen? I tried a way to solve this problem in O (n). But get the wron...

    Aug.23,2021
  • For string types, what's the difference between using push_back and directly concatenating characters with +?

    I did a question on leetcode, but for the string type, the push_back concatenation character failed the test, but changed to the plus sign to concatenate the character and passed it. topic link my two codes: class Solution { public: vector<...

    Mar.03,2021
  • MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
    MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b31abb-2bda4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
    MySQL Errno : 1021
    Message : Disk full (/tmp/#sql-temptable-64f5-1b31abb-2bda4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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