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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
static int lCommonPrefix_lists(L a, L b) { int i = 0, n = min(l(a), l(b)); while (i < n && eq(a.get(i), b.get(i))) ++i; ret i; }