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CHAT
Dec 8, 2010 21:08:40 GMT 2
Post by Cristian Anghelache on Dec 8, 2010 21:08:40 GMT 2
eu zic ca daca e sa se uite lumea , se uita si la skandenberg adevarat. Nu este adevarat, lumea nu este interesata de skandenberg adevarat, doar noi suntem interesati, dar noi suntem o minoritate... Am mai discutat despre asta... www.proarm.ro/forum/viewtopic.php?f=5&t=464&start=60
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CHAT
Dec 11, 2010 18:35:11 GMT 2
Post by Cristian Anghelache on Dec 11, 2010 18:35:11 GMT 2
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CHAT
Dec 17, 2010 14:31:41 GMT 2
Post by Cristian Anghelache on Dec 17, 2010 14:31:41 GMT 2
Sa va uitati pe statisticile acestor filmulete (le pun asa, deoarece statisticile pot fi vazute doar pe youtube, apasand butonul de langa nr. de vizualizari): Mi se pare amuzant faptul ca aparem ca pozitionare in timp inaintea lui WoA, la filmuletele puse pe youtube de Charlie Minell.
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CHAT
Dec 24, 2010 13:49:44 GMT 2
Post by Cristian Anghelache on Dec 24, 2010 13:49:44 GMT 2
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CHAT
Dec 27, 2010 16:50:00 GMT 2
Post by Cristian Anghelache on Dec 27, 2010 16:50:00 GMT 2
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CHAT
Dec 29, 2010 15:44:43 GMT 2
Post by Cristian Anghelache on Dec 29, 2010 15:44:43 GMT 2
One Murder, Two SolutionsCompetitors at the 2010 International Olympiad in Informatics tackled eight programming problems in two days of competition. Here’s one of the simpler challenges, along with the solutions supplied by Gennady Korotkevich and Neal Wu. Of the 315 competitors, 269 received a perfect score. The Task: Dr. Black has been murdered. Detective Jill must determine the murderer, crime scene, and weapon. There are six possible murderers (numbered 1 through 6, Professor Plum to Mrs. Peacock), 10 locations (1 through 10, ballroom to cellar), and six weapons (1 through 6, lead pipe to spanner). Detective Jill tries to guess the correct combination (there are 360 possibilities). Each guess is a theory. She asks her assistant, Jack, to confirm or refute each theory. When Jack refutes a theory, he reports that one of the guesses—murderer, location, or weapon—is wrong. The contestants are tasked with implementing a procedure that plays the role of Detective Jill. A brute-force program that tests all 360 theories earns a mere 50 points. An efficient program that tests no more than 20 theories earns an additional 50. ============================================ Korotkevich’s solution: Clear-headed and sleek. He sets up three variables, x, y, and z, to represent the murderers, locations, and weapons, respectively. Then he systematically tries all the combinations in order, increasing the variables incrementally. In other words, if his first theory is 1, 1, 1 and the computer tells him that the location is incorrect, his next theory is 1, 2, 1. This is efficient because all he has to do is keep track of which murderer, which location, and which weapon to try next. That’s just three things to remember. Language: Pascal Lines of code: 22 | =========================================================== Wu’s solution: Successful but more complicated than necessary. Wu first sets up a master list of all murderers, locations, and weapons. To do this, he creates three arrays called, naturally, mur, loc, and wep. Then he loops through the arrays, crossing off incorrect guesses as he goes. Each time he forms a theory, he searches all three lists to find a murderer, a place, and a weapon that hasn’t been crossed off. Language: C++ Lines of code: 46
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"Given 10,000 text strings selected from random Wikipedia articles written in various human languages, create a program that identifies the language. The competition’s science director, Gordon Cormack, threw Languages into the mix out of sheer curiosity; he genuinely didn’t know what the best answer was and hoped the kids would show him." "As for the Boy Wonder from Belarus, he wraps up the day in first place, 11 points ahead of Wu. He submitted 400 lines of tight, efficient code and held the lead almost the entire five hours. Once or twice, when an opponent from Bulgaria or Singapore overtook him, it was almost like he could “sense the scoreboard,” as Kolstad puts it. Then he’d shoot back to the top. The day’s events have dealt a fatal blow to the theory that Korotkevich is a mere coding robot, an uncreative automaton; if it were true, Languages would have fried his circuits. But he aced it, achieving slightly higher than 90 percent accuracy. “It was interesting, actually,” Korotkevich tells me when I stop him on the steps of the gym, his hands clasped behind his back and eyes darting from side to side like a panicked squirrel. “I am not used, quite, to such problems.” He tells me that the rumors are untrue: He practices only three to four hours a day, not six to seven." =========== Every year at IOI, there’s a question so difficult that it humbles even the adults who try to crack it. This year, that question comes on day two. Called SaveIt, it’s a classic ad hoc problem, not solvable with any standard algorithm. SaveIt asks the coder to calculate a table of the shortest distances through a large transportation network consisting of 1,000 cities and 36 hubs. Then, to get the full 100 points, the coder has to cram that table into an incredibly small space and decompress it without losing any information. It’s as if someone gave you an inflated beach ball and said, here, pack this into a cookie jar. If you find the air nozzle, it’s simple. Otherwise, it’s impossible. “Gennady got SaveIt, he got it,” Cormack says, making a noise like he just coughed milk through his nose. “Wasn’t hard enough! He got it with two hours to go. Amazing.” It’s not only the speed that impresses Cormack—it’s the fact that Korotkevich used a sophisticated compression technique known as arithmetic coding, one that requires graduate-student-level chops. I ask Cormack if he’s surprised to see a 15-year-old who knows arithmetic coding: “It would be foolish of us to say that we are surprised by anything that Gennady does.” Sursa: www.wired.com/magazine/2010/11/mf_algorithmolympics/all/1
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CHAT
Dec 30, 2010 14:23:11 GMT 2
Post by Cristian Anghelache on Dec 30, 2010 14:23:11 GMT 2
3RUN in China
3RUN Action Stunts
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CHAT
Dec 30, 2010 18:42:35 GMT 2
Post by Cristian Anghelache on Dec 30, 2010 18:42:35 GMT 2
Daca veti cauta pe google imagini cu Tatyana Nikisheva, majoritatea rezultatelor sunt cele de pe forumul SKNX: www.google.ro/images?hl=ro&expIds=17259,17311,24283&xhr=t&q=Tatyana+Nikisheva&cp=17&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1280&bih=899 Asta se intampla deoarece pe forumul SKNX apare numele ei in mai multe subiecte de pe forum - in clasamentele campionatelor europene si mondiale...
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CHAT
Dec 30, 2010 23:30:54 GMT 2
Post by Cristian Anghelache on Dec 30, 2010 23:30:54 GMT 2
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CHAT
Dec 31, 2010 14:46:08 GMT 2
Post by Cristian Anghelache on Dec 31, 2010 14:46:08 GMT 2
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CHAT
Jan 15, 2011 23:57:00 GMT 2
Post by Adrian Constantin on Jan 15, 2011 23:57:00 GMT 2
In vara a fost la noi la antrenamente un baiat, Ovidiu il cheama, care s-a stabilit de ceva timp in America, si se antrena cu un armwrestler cunoscut...campion la ei la 90(nu mai tin minte numele), si mi-a spus ca a avut ocazia sa faca si cu allen fisher, si cu john brzenk, si cu multi altii. Din ce am inteles de la el, Allen e un tip flegmatic care se crede superior, a recunoscut ca s-a dopat si in plus ii indeamna si pe altii sa ia "bomboane", este tare doar la mana stanga, din ce am inteles de la Ovidiu, la dreapta era cam de nivelul lui...
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CHAT
Jan 19, 2011 10:41:21 GMT 2
Post by Cristian Anghelache on Jan 19, 2011 10:41:21 GMT 2
In vara a fost la noi la antrenamente un baiat, Ovidiu il cheama, care s-a stabilit de ceva timp in America, si se antrena cu un armwrestler cunoscut...campion la ei la 90(nu mai tin minte numele), si mi-a spus ca a avut ocazia sa faca si cu allen fisher, si cu john brzenk, si cu multi altii. Din ce am inteles de la el, Allen e un tip flegmatic care se crede superior, a recunoscut ca s-a dopat si in plus ii indeamna si pe altii sa ia "bomboane", este tare doar la mana stanga, din ce am inteles de la Ovidiu, la dreapta era cam de nivelul lui... Probabil ca Ovidiu ( www.proarm.ro/forum/viewtopic.php?f=5&p=12737#p12737 ) l-a apucat pe Allen Fisher intr-o zi proasta... Sunt multi americani care s-au antrenat cu Allen (inclusiv John Brzenk de foarte multe ori), dar si alti sportivi din toata lumea care l-au intalnit, si care au numai cuvinte de lauda la adresa lui Allen... Si noi (romanii) putem spune ca il cunoastem altfel pe Ion Oncescu, dar asta nu schimba cu nimic performantele pe care le are la activ.
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CHAT
Jan 19, 2011 21:12:48 GMT 2
Post by szaszpetrut on Jan 19, 2011 21:12:48 GMT 2
Nu conteaza ce si cum a facut , important e ca a realizat ce multi nu au reusit. Chiar daca el chiar este asa cum ai auzit tu de la prietenul tau , pe acest forum ii sunt recunoscute performantele lui in timp, si nu caracterul.
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CHAT
Jan 21, 2011 12:51:45 GMT 2
Post by valentinvoevoda on Jan 21, 2011 12:51:45 GMT 2
In vara a fost la noi la antrenamente un baiat, Ovidiu il cheama, care s-a stabilit de ceva timp in America, si se antrena cu un armwrestler cunoscut...campion la ei la 90(nu mai tin minte numele), si mi-a spus ca a avut ocazia sa faca si cu allen fisher, si cu john brzenk, si cu multi altii. Din ce am inteles de la el, Allen e un tip flegmatic care se crede superior, a recunoscut ca s-a dopat si in plus ii indeamna si pe altii sa ia "bomboane", este tare doar la mana stanga, din ce am inteles de la Ovidiu, la dreapta era cam de nivelul lui... Probabil ca Ovidiu ( www.proarm.ro/forum/viewtopic.php?f=5&p=12737#p12737 ) l-a apucat pe Allen Fisher intr-o zi proasta... Sunt multi americani care s-au antrenat cu Allen (inclusiv John Brzenk de foarte multe ori), dar si alti sportivi din toata lumea care l-au intalnit, si care au numai cuvinte de lauda la adresa lui Allen... Si noi (romanii) putem spune ca il cunoastem altfel pe Ion Oncescu, dar asta nu schimba cu nimic performantele pe care le are la activ. Performantele unui sportiv vorbesc de la sine, nu le poti contesta. In ceea ce-l priveste pe Allen, mi-am schimbat simpatia pentru el cand l-am vazut in coltul lui Jerry Cadorette la meciul acestuia cu John, incurajandu-l spunandu-i ca Brzenk e terminat dupa primul meci etc. Brzenk s-a antrenat cu el si a avut numai cuvinte de lauda la adresa lui ptr ca el este un gentleman si nu ne putem astepta niciodata la altceva din partea lui
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CHAT
Jan 21, 2011 15:03:50 GMT 2
Post by Adrian Constantin on Jan 21, 2011 15:03:50 GMT 2
Nu conteaza ce si cum a facut , important e ca a realizat ce multi nu au reusit. Chiar daca el chiar este asa cum ai auzit tu de la prietenul tau , pe acest forum ii sunt recunoscute performantele lui in timp, si nu caracterul. Asa si care e problema? Ma gandeam ca ar fi interesant sa va impartasesc niste informatii care nu ar putea sa le aiba oricine, despre caracterul lui Allen. Un performer fara caracter, din punctul meu de vedere este 0. Daca tu ai impresia ca poti sa faci ce vrei atata timp cat esti campion te inseli!
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