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<?php // ksnctf http://ksnctf.sweetduet.info/problem/22 // #22 Square Cipher 60pt $map = explode(' ', 'oomktvziqtaovmmpxzoqrzsxlpwpgoj uDQEMISYnnVYnvyWRhHsDXnSCXAVVZj tZbknedErdpvAwQWpUiLqOxIqpafvXp dXoAVWcKppbEPuaqmXWjXJwRoRFOoEg pDiRUXlQjKJlslskVpGwtljGyVJPxHv bQsQNKxCsdYMdQPJiBmyrsuOrJQOtXg pMekeinUaMoDXqFzweLKipkBuggnsUv eQFYCJSKfBgHaJgZnZoWmOmAOJLVQHi hljrplajyKNXtwmfOjRwOqcqeeplyzy gkFOltsOyrPgIaerIaSjQQaVMyEhfyd vEaRHbBzfrcwJbCZmHdddLpuEJwspbt sXQGkwpKaTZmWJiZzpbkpHNiToawxKn wJpIKbGhnLjVAJNcxrqkKEJCKCOocSv mTRDNDpFtRUmcHoRELeSqXoGUIIsuYu ajeHaSVlQGLaEprSQarDzTomJdAWfqb zIJLHRBXMvNDegYeaoVRDuWBbdSBtLv xIeKdAYwajGHMgRLDGgDinBiLNBgatb kHepNsCQSJjTRmQrCHYWJqIPOVAUOer rvhmZfmogPglGNuLyAuSivBctlvVfzb qBJdHUkSaTArlgkhtHPyGhXOPkwmkBq rvbzZfwvLtTnhyXVHPlwsuGZQnNiNcm yCMtAVwYVgtZHVNznolGMBETIHFmoWj wfezbysbvOzsAhxSZFFAfOouyHldEYh gNHKKSFUtcUxfRyXHMugYBtAxBwDJZh rHmsozuNeoJqyzMDHsNbUDwzaNLtdxr bVmQMHyNndOWCZLnhrPxZXCYLDTWQre aSiEEJjZtoRpUzgsxsiiGzvnRpKLMrk qTzGCKvNhUhjrmCjAdwQAvkgqHyJZLm sSxzwjxAnWesTszIxirRwcWIXUPtwwa nTDEMTRGyhzdCtkTTDWbxdSjsNYlfXz eawtidzosgaofjxxyfcdoiulemirqap' ); $im = imagecreatetruecolor(31, 31); for ($i = 0; $i < 31; ++$i) { for ($j = 0; $j < 31; ++$j) { if (strtoupper($map[$i][$j]) === $map[$i][$j]) { imagesetpixel($im, $i, $j, imagecolorallocate($im, 0, 0, 0)); } else { imagesetpixel($im, $i, $j, imagecolorallocate($im, 255, 255, 255)); } } } header('Content-Type: image/png'); echo imagepng($im); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function imagecreatetruecolor() in /in/RB6WY:41 Stack trace: #0 {main} thrown in /in/RB6WY on line 41
Process exited with code 255.

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