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| <div class="bp3-card"> | ||
| <p>We are pleased to invite everybody to our <strong>TOKI Indonesian NOI Open Contest 2024</strong>!</p> | ||
| <hr /> | ||
| <h3 id="summary">Summary</h3> | ||
| <ul> | ||
| <li><strong>TOKI Indonesian NOI Open Contest 2024</strong> is an open competition mirroring Indonesian NOI 2024 (<strong>OSN 2024 Bidang Informatika</strong> in Bahasa Indonesia).</li> | ||
| <li>The problemset is the same as the problemset in the original competition and will be given in both Bahasa Indonesia and English.</li> | ||
| <li>The contest will be held on <a href="https://tlx.toki.id/contests"><strong>TLX</strong></a> (you may need to register for a TLX account if you do not have one).</li> | ||
| <li>If you have any questions please contact <a href="mailto:sc-osn-2024@googlegroups.com">sc-osn-2024@googlegroups.com</a>.</li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="rules-overview">Rules Overview</h3> | ||
| <ul> | ||
| <li>There will be <strong>one trial session</strong> and <strong>2 (two) competition days</strong>.</li> | ||
| <li>The result of the trial session does <strong>not</strong> affect scoring.</li> | ||
| <li>There will be <strong>3 (three) problems</strong> on each day to be solved in <strong>5 (five) hours</strong>.</li> | ||
| <li>Each contestant may submit up to <strong>50 submissions</strong> for each problem. This limit may be increased for some problems.</li> | ||
| <li>The supported programming language is <strong>C++</strong>.</li> | ||
| <li>During the competition, each contestant can only see their own scores.</li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="schedule-and-technical-details">Schedule and Technical Details</h3> | ||
| <ul> | ||
| <li>The contests will be held at the following time ranges: | ||
| <ul> | ||
| <li><strong>Day 0</strong>: <a href="https://www.timeanddate.com/worldclock/fixedtime.html?msg=TOKI+Indonesian+NOI+Open+Contest+2024+Day+0&iso=20240827T1800&p1=108&ah=19&am=00">27 August 2024 11:00 - 28 August 2024 06:00 UTC</a> (trial session)</li> | ||
| <li><strong>Day 1</strong>: <a href="https://www.timeanddate.com/worldclock/fixedtime.html?msg=TOKI+Indonesian+NOI+Open+Contest+2024+Day+1&iso=20240828T1400&p1=108&ah=23&am=00">28 August 2024 07:00 - 29 August 2024 06:00 UTC</a></li> | ||
| <li><strong>Day 2</strong>: <a href="https://www.timeanddate.com/worldclock/fixedtime.html?msg=TOKI+Indonesian+NOI+Open+Contest+2024+Day+2&iso=20240829T1400&p1=108&ah=23&am=00">29 August 2024 07:00 - 30 August 2024 06:00 UTC</a></li> | ||
| </ul> | ||
| </li> | ||
| <li>Each contestant can select <strong>any 5-hour window</strong> within the time range to do the contest for each competition day.</li> | ||
| <li><a href="https://tlx.toki.id/contests"><strong>All three contests are available on TLX</strong></a>. Please register in those contests.</li> | ||
| <li>Each contestant may start the contest any time within the time range, by clicking the "start" button.</li> | ||
| <li>There will be no additional time given if a contestant starts the contest in less than 5 hours before the contest ends.</li> | ||
| <li>The open contest does not support clarifications, but all important announcements from the original contest will be broadcast as well.</li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="problems-types">Problems Types</h3> | ||
| <ul> | ||
| <li>There are 3 possible problem types. Not all problem types might be given.</li> | ||
| <li><strong>Batch</strong> problems: | ||
| <ul> | ||
| <li>The most common problem type.</li> | ||
| <li>Given an input, contestants write a program that reads input from <strong>stdin</strong> and writes output to <strong>stdout</strong>.</li> | ||
| <li>The program must run within the given time and memory limits.</li> | ||
| <li>Example: <a href="https://tlx.toki.id/problems/osn-2018/1C">Online Ojek, OSN 2018</a></li> | ||
| </ul> | ||
| </li> | ||
| <li><strong>Interactive</strong> problems: | ||
| <ul> | ||
| <li>Contestants write a program that interacts with judge's program: judge's program writes to <strong>stdout</strong> and is given as the <strong>stdin</strong> for contestant's program, then contestant's program writes to <strong>stdout</strong> and is given as the <strong>stdin</strong> for judge's program, and the interaction continues until a given goal is reached.</li> | ||
| <li>Contestant's program must output the answer within the given time and memory limits.</li> | ||
| <li>Example: <a href="https://tlx.toki.id/problems/osn-2019/2B">Detecting Gold, OSN 2019</a></li> | ||
| </ul> | ||
| </li> | ||
| <li><strong>Output-only</strong> problems: | ||
| <ul> | ||
| <li>Contestants will be given all the input test cases.</li> | ||
| <li>Contestants submit <strong>output</strong> for each input test case.</li> | ||
| <li>Contestants <strong>do not have to</strong> write a program; the outputs may be solved manually.</li> | ||
| <li>Example: <a href="https://tlx.toki.id/problems/osn-2019/1C">OSN Excursion, OSN 2019</a>.</li> | ||
| </ul> | ||
| </li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="problem-scoring">Problem Scoring</h3> | ||
| <ul> | ||
| <li>For batch and interactive problems: | ||
| <ul> | ||
| <li>A problem consists of <strong>multiple subtasks</strong> with various points.</li> | ||
| <li>A subtask consists of <strong>multiple test cases</strong>.</li> | ||
| <li>A submission gets a subtask's points if it solves <strong>all of its test cases</strong>.</li> | ||
| <li>A problem may have <strong>open subtasks</strong> where the test cases are given to contestants.</li> | ||
| </ul> | ||
| </li> | ||
| <li>For output-only problems: | ||
| <ul> | ||
| <li>A problem consists of <strong>multiple test cases</strong> with various points.</li> | ||
| <li>A submission gets the test case's points if it produces the correct output.</li> | ||
| </ul> | ||
| </li> | ||
| <li>For each problem, the score can also be rewarded based on a given scoring formula. | ||
| <ul> | ||
| <li>The scoring formula will vary for each problem and will be explicitly stated in the problem description.</li> | ||
| <li>Example: | ||
| <ul> | ||
| <li>Batch: <a href="https://tlx.toki.id/problems/osn-2013/0C">Tukar-Tukar, OSN 2013</a>.</li> | ||
| <li>Interactive: <a href="https://tlx.toki.id/problems/ksn-2020/2C">Finding Balls, KSN 2020</a>.</li> | ||
| <li>Output-only: <a href="https://tlx.toki.id/problems/ksn-2020/1A">National Defence, KSN 2020</a>.</li> | ||
| </ul> | ||
| </li> | ||
| </ul> | ||
| </li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="contestant-scoring">Contestant Scoring</h3> | ||
| <ul> | ||
| <li>For batch and interactive problems: | ||
| <ul> | ||
| <li>On creative scoring, for each submission, the score of a subtask is the minimum score among all its test cases.</li> | ||
| <li>A subtask final score is the <strong>maximum of its score</strong> among all submissions.</li> | ||
| <li>Contestant's score for a problem is the sum of all its subtasks final score.</li> | ||
| </ul> | ||
| <p>For example, if the first submission got 30 points for the first subtask and 0 points for the second subtask, and the second submission got 0 points for the first subtask and 40 points for the second subtask, then the contestant's score for the problem is 70 points.</p> | ||
| </li> | ||
| <li>For output-only problems: | ||
| <ul> | ||
| <li>A test case final score is the <strong>maximum of its score</strong> among all submissions.</li> | ||
| <li>A contestant's score on a problem is the sum of all its test cases final score.</li> | ||
| </ul> | ||
| </li> | ||
| <li>A contestant's total score is the sum of <strong>all of problems score</strong> on <strong>both competition days</strong>.</li> | ||
| <li>Contestants will be ranked by the total score (descending).</li> | ||
| <li>Two contestants with <strong>the same</strong> total score will achieve <strong>the same</strong> rank.</li> | ||
| <li>Submission time <strong>will not affect</strong> contestant rank at all.</li> | ||
| </ul> | ||
| <hr /> | ||
| <h3 id="grading-system">Grading System</h3> | ||
| <ul> | ||
| <li><a href="https://tlx.toki.id">TLX</a> will be used as the grading system.</li> | ||
| <li>Source code limit for each submission is <strong>300 KB</strong>.</li> | ||
| <li>For each test case, the grader will output one of: | ||
| <ul> | ||
| <li><strong>AC</strong> (Accepted): program solved the problem within the given time and memory limits.</li> | ||
| <li><strong>WA</strong> (Wrong Answer): program stopped within given time and memory limits, but produced the wrong output.</li> | ||
| <li><strong>RTE</strong> (Runtime Error): program crashed or exceedeed the memory limit.</li> | ||
| <li><strong>TLE</strong> (Time Limit Exceeded): program exceeded the time limit.</li> | ||
| <li>Skipped: test case is not graded because there was a test case in the same subtask that was not solved.</li> | ||
| </ul> | ||
| </li> | ||
| </ul> | ||
| </div> |