Educational Codeforces Round 80 (Rated for Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1288 Educational Codeforces Round 80 (Rated for Div. 2) FINISHED False 7200 152810699 Jan. 14, 2020, 2:35 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 17099 ) B Yet Another Meme Problem PROGRAMMING math 1100

B'Try guessing the statement from this picture http://tiny.cc/ogyoiz. You are given two integers A and B , calculate the number of pairs (a, b) such that 1 <= a <= A , 1 <= b <= B , and the equation a cdot b + a + b = conc(a, b) is true; conc(a, b) is the concatenation of a and b (for example, conc(12, 23) = 1223 , conc(100, 11) = 10011 ). a and b should not contain leading zeroes. The first line contains t ( 1 <= t <= 100 ) -- the number of test cases. Each test case contains two integers A and B (1 <= A, B <= 10^9) . Print one integer -- the number of pairs (a, b) such that 1 <= a <= A , 1 <= b <= B , and the equation a cdot b + a + b = conc(a, b) is true. There is only one suitable pair in the first test case: a = 1 , b = 9 ( 1 + 9 + 1 cdot 9 = 19 ). '...

Tutorials

Educational Codeforces Round 80 Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
69199907 avenio99 B Jan. 20, 2020, 4:10 p.m. OK Clang++17 Diagnostics TESTS 9 46 0 1100
68783174 avm B Jan. 14, 2020, 2:48 p.m. OK D TESTS 9 30 25292800 1100
68794776 daut-dlang B Jan. 14, 2020, 3:11 p.m. OK D TESTS 9 46 0 1100
68818428 ruban B Jan. 14, 2020, 4:47 p.m. OK Delphi TESTS 9 15 52940800 1100
68814418 PAG B Jan. 14, 2020, 4:23 p.m. OK FPC TESTS 9 31 0 1100
68825292 VanilieProgramatoare B Jan. 14, 2020, 6:55 p.m. OK FPC TESTS 9 31 0 1100
69177365 AliIssat B Jan. 20, 2020, 8:37 a.m. OK GNU C11 TESTS 9 15 0 1100
69127264 RAVAL_KUSH_460 B Jan. 19, 2020, 2:34 p.m. OK GNU C11 TESTS 9 15 0 1100
69048262 sarthakagrawal927 B Jan. 18, 2020, 11:45 a.m. OK GNU C11 TESTS 9 15 0 1100
69581939 sachenlachen B Jan. 26, 2020, 5:44 p.m. OK GNU C11 TESTS 9 15 0 1100
68991017 liq B Jan. 17, 2020, 3:10 p.m. OK GNU C11 TESTS 9 15 0 1100
68982781 alpha7 B Jan. 17, 2020, 11:23 a.m. OK GNU C11 TESTS 9 15 0 1100
68982519 akash19jain B Jan. 17, 2020, 11:17 a.m. OK GNU C11 TESTS 9 15 0 1100
68975884 ashirwadsinha B Jan. 17, 2020, 8:48 a.m. OK GNU C11 TESTS 9 15 0 1100
69458610 kikikikisousou B Jan. 24, 2020, 9:42 a.m. OK GNU C11 TESTS 9 15 0 1100
69290335 ip_kanishka2001 B Jan. 22, 2020, 9:59 a.m. OK GNU C11 TESTS 9 15 0 1100
69510751 sunpeijie B Jan. 25, 2020, 10:23 a.m. OK GNU C++11 TESTS 9 15 0 1100
69456829 MelonMeow_ylh B Jan. 24, 2020, 9 a.m. OK GNU C++11 TESTS 9 15 0 1100
69455973 Andreiu B Jan. 24, 2020, 8:39 a.m. OK GNU C++11 TESTS 9 15 0 1100
69420010 iphelf B Jan. 23, 2020, 2:08 p.m. OK GNU C++11 TESTS 9 15 0 1100
69265667 arpit18009 B Jan. 21, 2020, 6:31 p.m. OK GNU C++11 TESTS 9 15 0 1100
69255468 pandrei B Jan. 21, 2020, 3:31 p.m. OK GNU C++11 TESTS 9 15 0 1100
69249332 vjudge4 B Jan. 21, 2020, 1:49 p.m. OK GNU C++11 TESTS 9 15 0 1100
69579506 UnoK B Jan. 26, 2020, 4:47 p.m. OK GNU C++11 TESTS 9 15 0 1100
69571076 luogu_bot4 B Jan. 26, 2020, 2:06 p.m. OK GNU C++11 TESTS 9 15 0 1100
69546059 AhmedMostafaNobi B Jan. 26, 2020, 2:47 a.m. OK GNU C++11 TESTS 9 15 0 1100
69554354 rk42745417 B Jan. 26, 2020, 8:05 a.m. OK GNU C++14 TESTS 9 15 0 1100
69554966 mustafaahmed41 B Jan. 26, 2020, 8:23 a.m. OK GNU C++14 TESTS 9 15 0 1100
69558941 Numan2962 B Jan. 26, 2020, 9:52 a.m. OK GNU C++14 TESTS 9 15 0 1100
69566280 grandhitarunteja B Jan. 26, 2020, 12:32 p.m. OK GNU C++14 TESTS 9 15 0 1100
69567860 looser-atul B Jan. 26, 2020, 1:05 p.m. OK GNU C++14 TESTS 9 15 0 1100
69579088 Niladree_Datta B Jan. 26, 2020, 4:37 p.m. OK GNU C++14 TESTS 9 15 0 1100
69582466 Ruchi_nitd B Jan. 26, 2020, 5:56 p.m. OK GNU C++14 TESTS 9 15 0 1100
69552789 coldEr66 B Jan. 26, 2020, 7:17 a.m. OK GNU C++14 TESTS 9 15 0 1100
69546370 Saurav_Pandey B Jan. 26, 2020, 3:08 a.m. OK GNU C++14 TESTS 9 15 0 1100
69537736 outofleague B Jan. 25, 2020, 7:38 p.m. OK GNU C++14 TESTS 9 15 0 1100
69551304 derranco_123 B Jan. 26, 2020, 6:36 a.m. OK GNU C++17 TESTS 9 15 0 1100
69580748 AndreevSashok B Jan. 26, 2020, 5:17 p.m. OK GNU C++17 TESTS 9 15 0 1100
69563553 Dedalius B Jan. 26, 2020, 11:33 a.m. OK GNU C++17 TESTS 9 15 0 1100
69553322 Mahmud_Rifat B Jan. 26, 2020, 7:33 a.m. OK GNU C++17 TESTS 9 15 0 1100
69553054 pachico B Jan. 26, 2020, 7:24 a.m. OK GNU C++17 TESTS 9 15 0 1100
69552207 Elwazer B Jan. 26, 2020, 7:02 a.m. OK GNU C++17 TESTS 9 15 0 1100
69540800 skye_high B Jan. 25, 2020, 9:21 p.m. OK GNU C++17 TESTS 9 15 0 1100
69532203 darth_coder B Jan. 25, 2020, 5:31 p.m. OK GNU C++17 TESTS 9 15 0 1100
69530163 LRJf B Jan. 25, 2020, 4:46 p.m. OK GNU C++17 TESTS 9 15 0 1100
69526185 Reaz_Uddin B Jan. 25, 2020, 3:09 p.m. OK GNU C++17 TESTS 9 15 0 1100
68809596 naipia B Jan. 14, 2020, 3:59 p.m. OK Go TESTS 9 30 0 1100
68801570 ccsu_cat_love_jiejie B Jan. 14, 2020, 3:29 p.m. OK Go TESTS 9 30 0 1100
69166802 kat0rik B Jan. 20, 2020, 4:15 a.m. OK Go TESTS 9 31 0 1100
69026144 NotNight B Jan. 18, 2020, 7:15 a.m. OK Go TESTS 9 31 0 1100
68818446 godsdice B Jan. 14, 2020, 4:47 p.m. OK Go TESTS 9 31 0 1100
68818334 afrozenman B Jan. 14, 2020, 4:46 p.m. OK Go TESTS 9 31 0 1100
68814554 amarjeetanand B Jan. 14, 2020, 4:23 p.m. OK Go TESTS 9 31 0 1100
68814516 pr0_iHack B Jan. 14, 2020, 4:23 p.m. OK Go TESTS 9 31 0 1100
68813617 jaimatadiletsrock B Jan. 14, 2020, 4:19 p.m. OK Go TESTS 9 31 0 1100
68791549 u1s1reallycai B Jan. 14, 2020, 3:03 p.m. OK Go TESTS 9 31 0 1100
69301266 mikeandreev B Jan. 22, 2020, 1:52 p.m. OK Haskell TESTS 9 30 102400 1100
68996423 Shlyapnik41lv B Jan. 17, 2020, 5:35 p.m. OK Haskell TESTS 9 30 102400 1100
68956988 rohithsajith B Jan. 16, 2020, 8:45 p.m. OK Java 11 TESTS 9 155 0 1100
69073342 GiantTornado B Jan. 19, 2020, 12:37 a.m. OK Java 11 TESTS 9 171 0 1100
69052316 girkarkshitij B Jan. 18, 2020, 1:10 p.m. OK Java 11 TESTS 9 171 0 1100
69036468 Rangerstorm B Jan. 18, 2020, 9:09 a.m. OK Java 11 TESTS 9 171 0 1100
68862240 Vatsal53 B Jan. 15, 2020, 12:27 p.m. OK Java 11 TESTS 9 171 0 1100
68817949 mikit B Jan. 14, 2020, 4:42 p.m. OK Java 11 TESTS 9 171 0 1100
68812563 Dsxv B Jan. 14, 2020, 4:14 p.m. OK Java 11 TESTS 9 171 0 1100
68807480 ZeyadKhattab B Jan. 14, 2020, 3:50 p.m. OK Java 11 TESTS 9 171 0 1100
68803136 lightseba B Jan. 14, 2020, 3:34 p.m. OK Java 11 TESTS 9 171 0 1100
68798486 TheSawan B Jan. 14, 2020, 3:20 p.m. OK Java 11 TESTS 9 171 0 1100
68780402 uwi B Jan. 14, 2020, 2:41 p.m. OK Java 8 TESTS 9 92 0 1100
68833500 bluesky111 B Jan. 15, 2020, 1:09 a.m. OK Java 8 TESTS 9 93 0 1100
68827269 A5SAS51N B Jan. 14, 2020, 7:46 p.m. OK Java 8 TESTS 9 93 0 1100
68825791 about B Jan. 14, 2020, 7:08 p.m. OK Java 8 TESTS 9 93 0 1100
68819222 Brom B Jan. 14, 2020, 4:57 p.m. OK Java 8 TESTS 9 93 0 1100
68818583 lzhang B Jan. 14, 2020, 4:49 p.m. OK Java 8 TESTS 9 93 0 1100
68792875 Naman_123 B Jan. 14, 2020, 3:06 p.m. OK Java 8 TESTS 9 93 0 1100
68788045 Lior B Jan. 14, 2020, 2:57 p.m. OK Java 8 TESTS 9 93 0 1100
68785684 pulkit1411 B Jan. 14, 2020, 2:52 p.m. OK Java 8 TESTS 9 93 0 1100
69582668 vjudge4 B Jan. 26, 2020, 6 p.m. OK Java 8 TESTS 9 108 0 1100
69449802 Nobita_Noobie B Jan. 24, 2020, 5:36 a.m. OK JavaScript TESTS 9 30 1024000 1100
69070320 vjudge2 B Jan. 18, 2020, 9:16 p.m. OK JavaScript TESTS 9 31 1024000 1100
68841275 Sparrow B Jan. 15, 2020, 5:52 a.m. OK JavaScript TESTS 9 31 1024000 1100
68798772 kokokochet B Jan. 14, 2020, 3:21 p.m. OK Kotlin TESTS 9 109 0 1100
68836713 Spheniscine B Jan. 15, 2020, 3:38 a.m. OK Kotlin TESTS 9 124 0 1100
68807562 AsuraPro B Jan. 14, 2020, 3:50 p.m. OK Kotlin TESTS 9 140 102400 1100
69449714 Heltion B Jan. 24, 2020, 5:33 a.m. OK Kotlin TESTS 9 140 102400 1100
68969395 bekzats B Jan. 17, 2020, 6:25 a.m. OK Kotlin TESTS 9 140 102400 1100
68804641 Differum B Jan. 14, 2020, 3:39 p.m. OK Kotlin TESTS 9 140 204800 1100
68802911 wbars B Jan. 14, 2020, 3:33 p.m. OK Kotlin TESTS 9 155 0 1100
69089042 deCooK B Jan. 19, 2020, 9:27 a.m. OK Mono C# TESTS 9 46 0 1100
68792210 mban259 B Jan. 14, 2020, 3:05 p.m. OK Mono C# TESTS 9 46 0 1100
68790364 ChediDaan B Jan. 14, 2020, 3:01 p.m. OK Mono C# TESTS 9 46 0 1100
68859247 TRR B Jan. 15, 2020, 11:33 a.m. OK Mono C# TESTS 9 46 0 1100
68787755 eSeF_ B Jan. 14, 2020, 2:56 p.m. OK Mono C# TESTS 9 46 0 1100
68798435 oremiro B Jan. 14, 2020, 3:20 p.m. OK Mono C# TESTS 9 46 0 1100
68805963 75number B Jan. 14, 2020, 3:44 p.m. OK Mono C# TESTS 9 46 3686400 1100
68787971 Yupiteru B Jan. 14, 2020, 2:57 p.m. OK Mono C# TESTS 9 61 136192000 1100
68781633 camypaper B Jan. 14, 2020, 2:45 p.m. OK Mono C# TESTS 9 62 0 1100
68791345 shy3205 B Jan. 14, 2020, 3:03 p.m. OK Mono C# TESTS 9 62 0 1100
69164269 vjudge2 B Jan. 20, 2020, 2:36 a.m. OK MS C++ TESTS 9 15 0 1100
69163787 vjudge5 B Jan. 20, 2020, 2:19 a.m. OK MS C++ TESTS 9 15 0 1100
68866443 vjudge4 B Jan. 15, 2020, 1:45 p.m. OK MS C++ TESTS 9 15 0 1100
68858868 vjudge3 B Jan. 15, 2020, 11:26 a.m. OK MS C++ TESTS 9 30 0 1100
69187483 vjudge2 B Jan. 20, 2020, 12:26 p.m. OK MS C++ TESTS 9 30 0 1100
69164222 vjudge5 B Jan. 20, 2020, 2:35 a.m. OK MS C++ TESTS 9 30 0 1100
69062021 vjudge3 B Jan. 18, 2020, 4:56 p.m. OK MS C++ TESTS 9 30 0 1100
69505993 vjudge1 B Jan. 25, 2020, 8:37 a.m. OK MS C++ TESTS 9 31 0 1100
69186161 vjudge2 B Jan. 20, 2020, 12:01 p.m. OK MS C++ TESTS 9 31 0 1100
69167505 x_y B Jan. 20, 2020, 4:41 a.m. OK MS C++ TESTS 9 31 0 1100
68803340 immortal_luo B Jan. 14, 2020, 3:34 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
69233128 Tovmasyan99 B Jan. 21, 2020, 10:16 a.m. OK MS C++ 2017 TESTS 9 15 0 1100
69073926 Kimochii B Jan. 19, 2020, 1:20 a.m. OK MS C++ 2017 TESTS 9 15 0 1100
68818850 dimasidorenko B Jan. 14, 2020, 4:52 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68815812 sunxuejiaodeduixiang B Jan. 14, 2020, 4:29 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68815762 Laaahu_ B Jan. 14, 2020, 4:29 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68815527 q8514199 B Jan. 14, 2020, 4:28 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68813873 cepiloth B Jan. 14, 2020, 4:20 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68797548 suun B Jan. 14, 2020, 3:17 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
68797396 DarknessX B Jan. 14, 2020, 3:17 p.m. OK MS C++ 2017 TESTS 9 15 0 1100
69115966 Deilor B Jan. 19, 2020, 2:07 p.m. OK Node.js TESTS 9 186 1331200 1100
68792227 shivam1420 B Jan. 14, 2020, 3:05 p.m. OK Node.js TESTS 9 233 921600 1100
68822141 DikovAleksandr B Jan. 14, 2020, 5:49 p.m. OK PascalABC.NET TESTS 9 295 204800 1100
68856013 PineHill B Jan. 15, 2020, 10:37 a.m. OK Perl TESTS 9 31 0 1100
68808181 erbolat0311 B Jan. 14, 2020, 3:53 p.m. OK PHP TESTS 9 46 0 1100
68791751 Jobless22 B Jan. 14, 2020, 3:04 p.m. OK PyPy 2 TESTS 9 109 0 1100
68796138 jolt.tks B Jan. 14, 2020, 3:14 p.m. OK PyPy 2 TESTS 9 124 0 1100
69520562 fortmax120 B Jan. 25, 2020, 1:19 p.m. OK PyPy 2 TESTS 9 124 0 1100
69374944 Wizmann B Jan. 22, 2020, 5:55 p.m. OK PyPy 2 TESTS 9 124 0 1100
68835173 aaa_bbb_ccc B Jan. 15, 2020, 2:37 a.m. OK PyPy 2 TESTS 9 124 0 1100
68804906 hritik3878 B Jan. 14, 2020, 3:40 p.m. OK PyPy 2 TESTS 9 124 0 1100
68786336 pajenegod B Jan. 14, 2020, 2:54 p.m. OK PyPy 2 TESTS 9 124 0 1100
68797790 raj1307 B Jan. 14, 2020, 3:18 p.m. OK PyPy 2 TESTS 9 124 307200 1100
68796532 Mukundan314 B Jan. 14, 2020, 3:15 p.m. OK PyPy 2 TESTS 9 139 102400 1100
68926627 deepak_prakash B Jan. 16, 2020, 10:29 a.m. OK PyPy 2 TESTS 9 140 0 1100
69583731 areyousatisfied B Jan. 26, 2020, 6:28 p.m. OK PyPy 3 TESTS 9 124 0 1100
69421783 PhilTheFish B Jan. 23, 2020, 2:37 p.m. OK PyPy 3 TESTS 9 124 0 1100
69302341 EliteLabyrinth B Jan. 22, 2020, 2:12 p.m. OK PyPy 3 TESTS 9 124 0 1100
69083677 saltyice B Jan. 19, 2020, 7:28 a.m. OK PyPy 3 TESTS 9 124 0 1100
68989623 jayeshsuthar826 B Jan. 17, 2020, 1:43 p.m. OK PyPy 3 TESTS 9 124 0 1100
68964189 rajbit B Jan. 17, 2020, 3:42 a.m. OK PyPy 3 TESTS 9 124 0 1100
68954636 vishhesh B Jan. 16, 2020, 7:31 p.m. OK PyPy 3 TESTS 9 124 0 1100
68953675 Pandemic B Jan. 16, 2020, 7:03 p.m. OK PyPy 3 TESTS 9 124 0 1100
68834433 mitribunskiy B Jan. 15, 2020, 1:59 a.m. OK PyPy 3 TESTS 9 124 0 1100
68821868 Stranger001 B Jan. 14, 2020, 5:44 p.m. OK PyPy 3 TESTS 9 124 0 1100
69544454 vjudge5 B Jan. 26, 2020, 12:52 a.m. OK Python 2 TESTS 9 156 0 1100
68981523 anonymous0314 B Jan. 17, 2020, 10:55 a.m. OK Python 2 TESTS 9 171 0 1100
68894877 _deep_m_ B Jan. 16, 2020, 4:02 a.m. OK Python 2 TESTS 9 171 0 1100
68805425 ChaosL B Jan. 14, 2020, 3:42 p.m. OK Python 2 TESTS 9 186 0 1100
68784444 Cifko B Jan. 14, 2020, 2:50 p.m. OK Python 2 TESTS 9 186 0 1100
68783652 lijianghan B Jan. 14, 2020, 2:49 p.m. OK Python 2 TESTS 9 186 0 1100
68815324 grayGoose B Jan. 14, 2020, 4:27 p.m. OK Python 2 TESTS 9 187 0 1100
68792741 clandestine_ B Jan. 14, 2020, 3:06 p.m. OK Python 2 TESTS 9 187 0 1100
69521717 tarun0802 B Jan. 25, 2020, 1:38 p.m. OK Python 3 TESTS 9 93 0 1100
69448569 Darth_C0d3R B Jan. 24, 2020, 4:52 a.m. OK Python 3 TESTS 9 93 0 1100
69430033 ayush_23 B Jan. 23, 2020, 5:02 p.m. OK Python 3 TESTS 9 93 0 1100
69287058 killer_12 B Jan. 22, 2020, 8:39 a.m. OK Python 3 TESTS 9 93 0 1100
69267943 lone_walker B Jan. 21, 2020, 7:23 p.m. OK Python 3 TESTS 9 93 0 1100
69250796 YousefMurad B Jan. 21, 2020, 2:13 p.m. OK Python 3 TESTS 9 93 0 1100
69189393 Fire_Bird B Jan. 20, 2020, 1:02 p.m. OK Python 3 TESTS 9 93 0 1100
69094877 bouraoui14 B Jan. 19, 2020, 11:39 a.m. OK Python 3 TESTS 9 93 0 1100
69087407 DarkKnight117 B Jan. 19, 2020, 8:51 a.m. OK Python 3 TESTS 9 93 0 1100
69079023 YusupB B Jan. 19, 2020, 5:25 a.m. OK Python 3 TESTS 9 93 0 1100
68792670 simanman B Jan. 14, 2020, 3:06 p.m. OK Ruby TESTS 9 62 102400 1100
68791208 yoshrc B Jan. 14, 2020, 3:03 p.m. OK Rust TESTS 9 15 0 1100
68782615 sansen B Jan. 14, 2020, 2:47 p.m. OK Rust TESTS 9 15 0 1100
69447718 guricerin B Jan. 24, 2020, 4:20 a.m. OK Rust TESTS 9 30 0 1100
69231626 bmerry B Jan. 21, 2020, 9:43 a.m. OK Rust TESTS 9 30 0 1100
68796960 akiradeveloper B Jan. 14, 2020, 3:16 p.m. OK Rust TESTS 9 31 204800 1100
69510738 bufistov B Jan. 25, 2020, 10:23 a.m. OK Scala TESTS 9 421 0 1100
68796929 j31d0 B Jan. 14, 2020, 3:16 p.m. OK Scala TESTS 9 452 0 1100
68871720 yudedako B Jan. 15, 2020, 3:27 p.m. OK Scala TESTS 9 483 0 1100

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