500개의 서로 같을 수도 있는 0이 아닌 정수들이 있다. 이들 중 아무렇게나 250개의 정수를 뽑고, 이들을 해로 가지는 x에 대한 250차 방정식을 세운다. 이 때, 이 250차방정식의 계수가 남은 250개의 수를 적절히 배열한 순서대로 나타난다고 한다. 어떻게 250개의 수를 뽑던지 이 규칙을 항상 만족하는 500개의 정수가 존재하는가?
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Severity: Warning
Message: mkdir(): Permission denied
Filename: libraries/Common.php
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Backtrace:
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 202
Function: mkdir
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getLatexImg
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Function: parseLatexImg
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Function: view
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Function: view
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
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Function: require_once
Severity: Warning
Message: file_put_contents(/DATA/upload/polymath/latex/752ce31f5911f97e88faf8d47a5c5783.gif): failed to open stream: No such file or directory
Filename: libraries/Common.php
Line Number: 213
Backtrace:
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 213
Function: file_put_contents
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getLatexImg
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImg
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
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Function: view
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: view
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
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Function: require_once