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4    <title>International Olympiad in Informatics</title>
5    <meta name="description" content="The IOI is the most prestigious computer science competition in the world for secondary school students. UNESCO and IFIP are patrons. The contest consists of two days of computer programming and solving various tasks of algorithmic nature. Students at the IOI compete on an individual basis, with up to four students competing from each participating country." />
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38                        <a class="nav-link" href="/page/contests/10">Editions</a>
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72                            <a class="nav-link" href="/page/ioi-journal/1">Journal</a>
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79                <a href="https://www.facebook.com/ioinformatics.org/" style="color: white;" title="Facebook"><span class="ioi-icon ioi-icon-facebook"></span></a>&nbsp; &nbsp;
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88    <div class="d-md-none">
89        <p class="pt-1 pb-2" style="font-size: 1.1rem;">&nbsp;</p>
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92    <div class="index-background-image-img"></div>
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94<main class="container">
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105                <div class="col-12 col-md-10 col-lg-7 col-xl-6 index-background-left">
106                    <h3 style="color: #ffffff; font-weight: bold; font-size: 3rem;">IOI 2026 <span class="d-none d-sm-inline"> - Uzbekistan</span></h3>
107                    <p style="font-size: 1.5rem; padding-right: 26px; color: #ffffff;">The latest Olympiad took place in Uzbekistan from August 9th to 16th. You can visit the event website, or scroll down to read about the IOI organization.</p>
108
109                    <p class="center-on-mobile"><a href="https://ioi2026.uz/" class="btn btn-danger btn-lg" style="margin: 10px 20px; font-size: 1.5rem;">Website</a><a href="https://stats.ioinformatics.org/results/2026" class="btn btn-warning btn-lg" style="margin: 10px 20px; font-size: 1.5rem;">Results</a></p>
110
111                    <p class="d-block d-sm-none" style="text-align: center; padding: 0; margin: 27px 0 -43px 0; opacity: 0.35;"><img width="16" height="16" src="/icons/down-arrow.png" alt="" /></p>
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118</main>
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123
124    <div class="container">
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126    <div class="row">
127        <div class="col-12 col-md-6 order-md-2">
128            <h3 style="font-size: 1.5rem; font-weight: bold; margin-bottom: 1rem; margin-top: 2rem;">News</h3>
129
130
131                    <div data-id="67" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="news" data-link-click-to="/news/ioi-2027-call-for-tasks/67">
132
133                        <div class="row">
134                            <div class="col-3 col-md-2" style="text-align: center; display: flex;
135    align-items: center;
136    flex-wrap: wrap;"><img src="/images/ioi_2027_logo.png" class="img-fluid" /></div>
137                            <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/news/ioi-2027-call-for-tasks/67">IOI 2027 Call for Tasks</a><br />&nbsp;Dear IOI Community, We are excited to announce that the Call for tasks for IOI 2027 is officially open! The scientific committee for IOI 2027 would...</p></div>
138                        </div>
139                    </div>
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141                    <div data-id="66" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="news" data-link-click-to="/news/ioi-2025---task-explanation-videos/66">
142
143                        <div class="row">
144                            <div class="col-3 col-md-2" style="text-align: center; display: flex;
145    align-items: center;
146    flex-wrap: wrap;"><img src="/images/ioi2025_logo.jpg" class="img-fluid" /></div>
147                            <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;
147" href="/news/ioi-2025---task-explanation-videos/66">IOI 2025 - Task Explanation Videos</a><br />&nbsp;The second task explanation of IOI tasks from last year has just been published on YouTube. This timeEljakim Schrijvers explains the task Festival...</p></div>
148                        </div>
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151                    <div data-id="65" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="news" data-link-click-to="/news/ioi-journal---volume-20/65">
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153                        <div class="row">
154                            <div class="col-3 col-md-2" style="text-align: center; display: flex;
155    align-items: center;
156    flex-wrap: wrap;"><img src="/images/ioi-journal-vol20.png" class="img-fluid" /></div>
157                            <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/news/ioi-journal---volume-20/65">IOI Journal - Volume 20</a><br />&nbsp;Dear IOI community, The OLYMPIADS IN INFORMATICS volume 20 has just been published.</p></div>
158                        </div>
159                    </div>
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161                    <div data-id="64" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="news" data-link-click-to="/news/ejoi-2026---call-for-tasks/64">
162
163                        <div class="row">
164                            <div class="col-3 col-md-2" style="text-align: center; display: flex;
165    align-items: center;
166    flex-wrap: wrap;"><img src="/images/ejoi-2026-logo.png" class="img-fluid" /></div>
167                            <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/news/ejoi-2026---call-for-tasks/64">EJOI 2026 - Call For Tasks</a><br />&nbsp;Dear all, The European Junior Olympiad in Informatics will take place 24-30 July 2026 in Kaunas, Lithuania.</p></div>
168                        </div>
169                    </div>
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171                    <div data-id="63" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="news" data-link-click-to="/news/call-for-papers/63">
172
173                        <div class="row">
174                            <div class="col-3 col-md-2" style="text-align: center; display: flex;
175    align-items: center;
176    flex-wrap: wrap;"><img src="/images/journal_vertical.jpg" class="img-fluid" /></div>
177                            <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/news/call-for-papers/63">Call for Papers</a><br />&nbsp;The 20th conference will be held concurrently with the 2026 International Olympiad in Informatics, which will take place in Uzbekistan.</p></div>
178                        </div>
179                    </div>
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184        <div class="col-12 col-md-6 order-md-1">
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187            <h3 style="font-size: 1.5rem; font-weight: bold; margin-bottom: 1rem; margin-top: 2rem;">Events</h3>
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190                <div data-id="11" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="event" data-link-click-to="https://ioi2026.uz/">
191
192                    <div class="row">
193                        <div class="col-3 col-md-2" style="text-align: center; display: flex;
194    align-items: center;
195    flex-wrap: wrap;"><img src="/flags/uz.png" class="img-fluid" style="border: 1px solid #797979;" /></div>
196                        <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="https://ioi2026.uz/">IOI 2026 was hosted by Uzbekistan</a><br />&nbsp;Uzbekistan hosted IOI 2026. Visit the official website of the event to learn more.</p></div>
197                    </div>
198                </div>
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200                <div data-id="12" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="event" data-link-click-to="https://ioi2027.de/">
201
202                    <div class="row">
203                        <div class="col-3 col-md-2" style="text-align: center; display: flex;
204    align-items: center;
205    flex-wrap: wrap;"><img src="/flags/de.png" class="img-fluid" style="border: 1px solid #797979;" /></div>
206                        <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="https://ioi2027.de/">Germany was selected to host IOI 2027</a><br />&nbsp;Germany will host IOI 2027. You can read more on the official website of the event.&nbsp; <span class="badge badge-warning">Future event</span></p></div>
207                    </div>
208                </div>
209
210                <div data-id="13" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="event" data-link-click-to="/page/contests/10">
211
212                    <div class="row">
213                        <div class="col-3 col-md-2" style="text-align: center; display: flex;
214    align-items: center;
215    flex-wrap: wrap;"><img src="/flags/jp.png" class="img-fluid" style="border: 1px solid #797979;" /></div>
216                        <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/page/contests/10">IOI 2028 will take place in Japan</a><br />&nbsp;
216Japan has been selected to host IOI 2028. Check out the Editions page for more information.&nbsp; <span class="badge badge-warning">Future event</span></p></div>
217                    </div>
218                </div>
219
220                <div data-id="14" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="event" data-link-click-to="/page/contests/10">
221
222                    <div class="row">
223                        <div class="col-3 col-md-2" style="text-align: center; display: flex;
224    align-items: center;
225    flex-wrap: wrap;"><img src="/flags/bg.png" class="img-fluid" style="border: 1px solid #797979;" /></div>
226                        <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/page/contests/10">Bulgaria will host IOI 2029</a><br />&nbsp;IOI 2029 will take place in Bulgaria. You can find more information on the Editions page.&nbsp; <span class="badge badge-warning">Future event</span></p></div>
227                    </div>
228                </div>
229
230                <div data-id="15" style="background-color: #fff; border: 1px solid #cecece; box-shadow: 3px 3px #e3e3e3; border-radius: 5px; padding: 12px 12px 4px 12px; margin-bottom: 19px;" data-type="event" data-link-click-to="/page/contests/10">
231
232                    <div class="row">
233                        <div class="col-3 col-md-2" style="text-align: center; display: flex;
234    align-items: center;
235    flex-wrap: wrap;"><img src="/flags/mo.png" class="img-fluid" style="border: 1px solid #797979;" /></div>
236                        <div class="col-9 col-md-10" style="padding-left: 5px;"><p style="color: #4d4d4d; font-size: 0.9rem;"><a style="color: #4a4a4a; font-size: 1.2rem;" href="/page/contests/10">IOI 2030 will be organized in Macau</a><br />&nbsp;Macau has been selected as the host of IOI 2030. Check out the Editions page for more information.&nbsp; <span class="badge badge-warning">Future event</span></p></div>
237                    </div>
238                </div>
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243        </div>
244    </div>
245    </div>
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247</div>
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249
250<div style="position: relative; background-color: #2e45bd; color: white;">
251
252    <div style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0.075; background-image: url('/images/languages.jpg'); background-size: cover;"></div>
253
254    <div class="container" style="padding-top: 60px; padding-bottom: 80px;">
255
256        <div class="row d-none d-md-block">
257            <div class="col-12">
258                <h2 style="margin-top: 30px; margin-bottom: 30px; font-size: 3rem; text-align: center;">Need more info?</h2>
259            </div>
260        </div>
261
262        <div class="row">
263
264
265            <div class="col-md-4" style="text-align: center;" data-link-click-to="/page/getting-started/14">
266
267                <p><img src="/icons/laptopw.png" style="margin-top: 30px; width: 60%; max-width: 50px;" /></p>
268                <h2>Beginners</h2>
269                <p style="padding: 0 10px 20px 10px;">Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.</p>
270
271            </div>
272
273
274            <div class="col-md-4" style="text-align: center;" data-link-click-to="http://stats.ioinformatics.org/">
275
276                <p><img src="/icons/awardw.png"  style="margin-top: 30px; width: 60%; max-width: 50px;" /></p>
277                <h2>Statistics</h2>
278                <p style="padding: 0 10px 20px 10px;">A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.</p>
279
280            </div>
281
282
283            <div class="col-md-4" style="text-align: center;" data-link-click-to="/page/ioi-journal/1">
284
285                <p><img src="/icons/bookw.png"  style="margin-top: 30px; width: 60%; max-width: 50px;" /></p>
286                <h2>Journal</h2>
287                <p style="padding: 0 10px 20px 10px;">The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.</p>
288
289            </div>
290        </div>
291
292    </div>
293</div>
294
295<div class="d-none d-md-block">
296    <div class="container" style="padding-top: 64px; padding-bottom: 49px;">
297
298        <div class="row">
299            <div class="col-12">
300                <h2 style="margin-top: 30px; margin-bottom: 12px; font-size: 3rem; text-align: center;">History of the IOI</h2>
301                <p style="margin-bottom: 50px; text-align: center; font-size: 1.5rem;">Several International Olympiads in Informatics have been organized so far, hosted by a number of different c
301ountries.</p>
302            </div>
303        </div>
304
305        <div class="row">
306            <div class="col-12">
307                <ul class="multiple-columns-list list-image-container with-light-box-shadows">
308                    <li><img src="/flags/bg.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1989, Bulgaria</li>
309                    <li><img src="/flags/sunion.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1990, Soviet Union</li>
310                    <li><img src="/flags/gr.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1991, Greece</li>
311                    <li><img src="/flags/de.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1992, Germany</li>
312                    <li><img src="/flags/ar.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1993, Argentina</li>
313                    <li><img src="/flags/se.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1994, Sweden</li>
314                    <li><img src="/flags/nl.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1995, Netherlands</li>
315                    <li><img src="/flags/hu.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1996, Hungary</li>
316                    <li><img src="/flags/za.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1997, South Africa</li>
317                    <li><img src="/flags/pt.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1998, Portugal</li>
318                    <li><img src="/flags/tr.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 1999, Türkiye</li>
319                    <li><img src="/flags/cn.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2000, China</li>
320                    <li><img src="/flags/fi.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2001, Finland</li>
321                    <li><img src="/flags/kr.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2002, Korea</li>
322                    <li><img src="/flags/us.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2003, USA</li>
323                    <li><img src="/flags/gr.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2004, Greece</li>
324                    <li><img src="/flags/pl.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2005, Poland</li>
325                    <li><img src="/flags/mx.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2006, Mexico</li>
326                    <li><img src="/flags/hr.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2007, Croatia</li>
327                    <li><img src="/flags/eg.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2008, Egypt</li>
328                    <li><img src="/flags/bg.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2009, Bulgaria</li>
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336                    <li><img src="/flags/ir.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2017, Iran</li>
337                    <li><img src="/flags/jp.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2018, Japan</li>
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340                    <li><img src="/flags/sg.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2021, Singapore<span class="text-danger" title="online event">*</span></li>
341                    <li><img src="/flags/id.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2022, Indonesia</li>
342                    <li><img src="/flags/hu.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2023, Hungary</li>
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345                    <li><img src="/flags/uz.png" height="25" class="d-inline-block align-top" style="width: auto;" alt=""><br />IOI 2026, Uzbekistan</li>
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Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.