'$now' and c.defunct='N' ) or c.`private`='1' ";
$used_in_contests=pdo_query($sql,$id);
if (isset($_SESSION[$OJ_NAME.'_'.'administrator'])|| isset($_SESSION[$OJ_NAME.'_'.'problem_verifiter']) || isset($_SESSION[$OJ_NAME.'_'.'contest_creator']) || isset($_SESSION[$OJ_NAME.'_'.'problem_editor']))
$sql = "SELECT * FROM `problem` WHERE `problem_id`=?";
else if ($OJ_FREE_PRACTICE)
$sql = "SELECT * FROM `problem` WHERE defunct='N' and `problem_id`=?";
else
$sql = "SELECT * FROM `problem` WHERE `problem_id`=? AND `defunct`='N' AND `problem_id` NOT IN (
SELECT `problem_id` FROM `contest_problem` WHERE `contest_id` IN (
SELECT `contest_id` FROM `contest` WHERE ( `end_time`>'$now' and defunct='N' ) or `private`='1'
)
)"; ////////// people should not see the problem used in contest before they end by modifying url in browser address bar
///////// if you give students opportunities to test their result out side the contest ,they can bypass the penalty time of 20 mins for
///////// each non-AC sumbission in contest. if you give them opportunities to view problems before exam ,they will ask classmates to write
///////// code for them in advance, if you want to share private contest problem to practice you should modify the contest into public
$pr_flag = true;
$result = pdo_query($sql,$id);
}
else if (isset($_GET['cid']) && isset($_GET['pid'])) {
//contest
$cid = intval($_GET['cid']);
$pid = intval($_GET['pid']);
require_once("contest-check.php");
if (isset($_SESSION[$OJ_NAME.'_'.'administrator']) || isset($_SESSION[$OJ_NAME.'_'.'contest_creator']) || isset($_SESSION[$OJ_NAME.'_'.'problem_editor']))
$sql = "SELECT langmask,private,defunct FROM `contest` WHERE `contest_id`=?";
else
$sql = "SELECT langmask,private,defunct FROM `contest` WHERE `defunct`='N' AND `contest_id`=? AND (`start_time`<='$now' AND ('$now'<`end_time` or private='N') )";
$result = pdo_query($sql,$cid);
$rows_cnt =empty($result)?0:count($result);
if (empty($result) && !$OJ_FREE_PRACTICE && !isset($_SESSION[$OJ_NAME.'_administrator']) && !isset($_SESSION[$OJ_NAME."_c".$cid]) ) {
$view_errors = "$MSG_CONTESTNo such Contest!
";
require("template/".$OJ_TEMPLATE."/error.php");
exit(0);
}
$row = ($result[0]);
$contest_ok = true;
if ($row[1] && !isset($_SESSION[$OJ_NAME.'_'.'c'.$cid]))
$contest_ok = false;
if ($row[2]=='Y')
$contest_ok = false;
if (isset($_SESSION[$OJ_NAME.'_'.'administrator']) || isset($_SESSION[$OJ_NAME.'_'.'contest_creator']) || isset($_SESSION[$OJ_NAME.'_'.'problem_editor']))
$contest_ok = true;
$ok_cnt = $rows_cnt==1;
$langmask = $row[0];
if ( !$contest_ok ) {
//not started
$view_errors = "No such Contest!";
require("template/".$OJ_TEMPLATE."/error.php");
exit(0);
}
else {
//started
// $sql = "SELECT * FROM `problem` WHERE `defunct`='N' AND `problem_id`=( // <- defunct problem not in list
// $sql = "SELECT * FROM `problem` WHERE `problem_id`=( // <-- defunct problem in list for contest but, not in list for practice
$sql = "SELECT * FROM `problem` WHERE `problem_id`=(
SELECT `problem_id` FROM `contest_problem` WHERE `contest_id`=? AND `num`=?
)";
$result = pdo_query($sql,$cid,$pid);
$id = $result[0]['problem_id'];
}
//public
if (!$contest_ok) {
$view_errors = "Not Invited!";
require("template/".$OJ_TEMPLATE."/error.php");
exit(0);
}
$co_flag = true;
}
else {
$view_errors="$MSG_NO_SUCH_PROBLEM$MSG_NO_SUCH_PROBLEM
";
require("template/".$OJ_TEMPLATE."/error.php");
exit(0);
}
if (count($result)!=1) {
$view_errors = "";
if (isset($_GET['id'])) {
$id = intval($_GET['id']);
if(count($used_in_contests)>0){
if (!(isset($OJ_EXAM_CONTEST_ID)||isset($OJ_ON_SITE_CONTEST_ID))) {
$view_errors.= "
$MSG_PROBLEM_USED_IN:";
foreach($used_in_contests as $contests){
$view_errors.= "".$contests[1]."
";
}
//echo "";
}
}
else {
$view_title = "$MSG_NO_SUCH_PROBLEM!";
$view_errors .= "$MSG_NO_SUCH_PROBLEM!
";
}
}
else {
$view_title = "$MSG_NO_SUCH_PROBLEM!";
$view_errors .= "$MSG_NO_SUCH_PROBLEM!
";
}
if(!(isset($_SESSION[$OJ_NAME.'_administrator'])||isset($_SESSION[$OJ_NAME.'_problem_editor']))){
require("template/".$OJ_TEMPLATE."/error.php");
exit(0);
}
}
else {
$row = $result[0];
$view_title = $row['title'];
}
if( isset($OJ_NOIP_KEYWORD) && $OJ_NOIP_KEYWORD ){
//检查当前题目是不是在NOIP模式比赛中，如果是则不显示AC数量 2020.7.11 by ivan_zhou
//$now = date('Y-m-d H:i', time());
$sql = "select 1 from `contest_problem` where (`problem_id`= ? ) and `contest_id` IN (select `contest_id` from `contest` where `start_time` < ? and `end_time` > ? and `title` like ?)";
$rrs = pdo_query($sql, $id ,$now , $now , "%$OJ_NOIP_KEYWORD%");
$flag = !empty($rrs) ;
if($flag){
$row[ 'accepted' ] = ' ? ';
// 使用$OJ_NOIP_TISHI 条件语句确定是否显示提示信息
if (isset($OJ_NOIP_HINT) && $OJ_NOIP_HINT) {
//$row['hint'] = $MSG_NOIP_NOHINT;
} else {
$row['hint'] = $MSG_NOIP_NOHINT;
}
}
}
/////////////////////////Template
require("template/".$OJ_TEMPLATE."/problem.php");
/////////////////////////Common foot
if(file_exists('./include/cache_end.php'))
require_once('./include/cache_end.php');
?>