Educational Codeforces Round 90 (Rated for Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1373 Educational Codeforces Round 90 (Rated for Div. 2) FINISHED False 7200 138727499 June 25, 2020, 2:35 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 27206 ) A Donut Shops PROGRAMMING greedy implementation math

B"There are two rival donut shops. The first shop sells donuts at retail: each donut costs a dollars. The second shop sells donuts only in bulk: box of b donuts costs c dollars. So if you want to buy x donuts from this shop, then you have to buy the smallest number of boxes such that the total number of donuts in them is greater or equal to x . You want to determine two positive integer values: If any of these values doesn't exist then that value should be equal to -1 . If there are multiple possible answers, then print any of them. The printed values should be less or equal to 10^9 . It can be shown that under the given constraints such values always exist if any values exist at all. The first line contains a single integer t ( 1 <= t <= 1000 ) -- the number of testcases. Each of the next t lines contains three integers a , b and c ( 1 <= a <= 10^9 , 2 <= b <= 10^9 , 1 <= c <= 10^9 ). For each testcase print two positive integers. For both shops print such x that buying x donuts in this shop is strictly cheaper than buying x donuts in the other shop. x should be greater than 0 and less or equal to 10^9 . If there is no such x , then print -1 . If there are multiple answers, then print any of them. In the first testcase buying any number of donuts will be cheaper in the second shop. For example, for 3 or 5 donuts you'll have to buy a box of 10 donuts for 4 dollars. 3 or 5 donuts in the first shop would cost you 15 or 25 dollars, respectively, however. For 20 donuts you'll have to buy two boxes for 8 dollars total. Note that 3 and 5 are also valid answers for the second shop, along with many other answers. In the second testcase buying any number of donuts will be either cheaper in the first shop or the same price. 8 donuts cost 32 dolla"...

Tutorials

Educational Codeforces Round 90 Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
85089033 KCSB A June 26, 2020, 4:32 a.m. OK GNU C11 TESTS 48 31 3993600
85088955 sudipto3331 A June 26, 2020, 4:30 a.m. OK GNU C11 TESTS 48 31 3993600
85086428 tejasva.jugran A June 26, 2020, 3:34 a.m. OK GNU C11 TESTS 48 31 3993600
85078306 Suman_Mandol A June 25, 2020, 11:08 p.m. OK GNU C11 TESTS 48 31 3993600
85068848 darshilp326 A June 25, 2020, 7:22 p.m. OK GNU C11 TESTS 48 31 3993600
85067503 iamnobody12 A June 25, 2020, 7:02 p.m. OK GNU C11 TESTS 48 31 3993600
85066929 khasrulShihab A June 25, 2020, 6:54 p.m. OK GNU C11 TESTS 48 31 3993600
85060701 Surkanti_Akshitha A June 25, 2020, 5:34 p.m. OK GNU C11 TESTS 48 31 3993600
85060017 992619er A June 25, 2020, 5:28 p.m. OK GNU C11 TESTS 48 31 3993600
85093216 SUNNY24 A June 26, 2020, 5:53 a.m. OK GNU C11 TESTS 48 31 3993600
85075853 mobarak_aiub A June 25, 2020, 9:44 p.m. OK GNU C++11 TESTS 48 30 4096000
85084442 LJC001115 A June 26, 2020, 2:48 a.m. OK GNU C++11 TESTS 48 30 4096000
85084351 ezboy A June 26, 2020, 2:46 a.m. OK GNU C++11 TESTS 48 30 4096000
85083691 MoRanSky A June 26, 2020, 2:30 a.m. OK GNU C++11 TESTS 48 30 4096000
85083160 JJLeo A June 26, 2020, 2:15 a.m. OK GNU C++11 TESTS 48 30 4096000
85072468 whoisthat A June 25, 2020, 8:26 p.m. OK GNU C++11 TESTS 48 30 4096000
85048257 absinthe A June 25, 2020, 4:27 p.m. OK GNU C++11 TESTS 48 30 4096000
85087933 JY_Poi A June 26, 2020, 4:08 a.m. OK GNU C++11 TESTS 48 30 4096000
85022049 sidne A June 25, 2020, 3:29 p.m. OK GNU C++11 TESTS 48 30 4096000
85088868 chen_03 A June 26, 2020, 4:28 a.m. OK GNU C++11 TESTS 48 31 3993600
85055941 ffgghh A June 25, 2020, 4:52 p.m. OK GNU C++14 TESTS 48 30 3993600
85084828 Yeir A June 26, 2020, 2:57 a.m. OK GNU C++14 TESTS 48 31 3686400
85093642 WaheguruAnurag A June 26, 2020, 5:59 a.m. OK GNU C++14 TESTS 48 31 3686400
85092924 Fahad.sm A June 26, 2020, 5:49 a.m. OK GNU C++14 TESTS 48 31 3686400
85089978 n_i_k_h_i_l A June 26, 2020, 4:50 a.m. OK GNU C++14 TESTS 48 31 3686400
85088948 uprising_rk A June 26, 2020, 4:30 a.m. OK GNU C++14 TESTS 48 31 3686400
85087677 gaurav26 A June 26, 2020, 4:03 a.m. OK GNU C++14 TESTS 48 31 3686400
85086042 adarsh1130 A June 26, 2020, 3:26 a.m. OK GNU C++14 TESTS 48 31 3686400
85085557 shiv4s A June 26, 2020, 3:14 a.m. OK GNU C++14 TESTS 48 31 3686400
85085511 jainnish98 A June 26, 2020, 3:13 a.m. OK GNU C++14 TESTS 48 31 3686400
85027121 abhishekad7 A June 25, 2020, 3:38 p.m. OK GNU C++17 TESTS 48 30 3686400
85093816 Ahs_58 A June 26, 2020, 6:01 a.m. OK GNU C++17 TESTS 48 31 3686400
85093294 santhosh3 A June 26, 2020, 5:54 a.m. OK GNU C++17 TESTS 48 31 3686400
85093084 KillMonger10 A June 26, 2020, 5:51 a.m. OK GNU C++17 TESTS 48 31 3686400
85089847 melks A June 26, 2020, 4:47 a.m. OK GNU C++17 TESTS 48 31 3686400
85089586 sathvikng A June 26, 2020, 4:42 a.m. OK GNU C++17 TESTS 48 31 3686400
85089481 Magician__1307 A June 26, 2020, 4:41 a.m. OK GNU C++17 TESTS 48 31 3686400
85089433 giriamit1999 A June 26, 2020, 4:40 a.m. OK GNU C++17 TESTS 48 31 3686400
85089068 WrongAnswerInfinity A June 26, 2020, 4:33 a.m. OK GNU C++17 TESTS 48 31 3686400
85088760 HrujulThumar22 A June 26, 2020, 4:26 a.m. OK GNU C++17 TESTS 48 31 3686400
85065760 haruki_K A June 25, 2020, 6:39 p.m. OK GNU C++17 (64) TESTS 48 30 4608000
85085958 t_121 A June 26, 2020, 3:24 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85093766 Mormo_1703119 A June 26, 2020, 6 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85093186 arjunbangari A June 26, 2020, 5:52 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85089037 s.b.bhadiyadara33 A June 26, 2020, 4:32 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85087937 ketan_sarode A June 26, 2020, 4:08 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85087594 mohitb987 A June 26, 2020, 4:01 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85087363 Infuse A June 26, 2020, 3:56 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85087041 beast_sid A June 26, 2020, 3:49 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85085459 Ameliorate A June 26, 2020, 3:12 a.m. OK GNU C++17 (64) TESTS 48 31 4608000
85023865 llzhh A June 25, 2020, 3:32 p.m. OK Go TESTS 48 124 10649600
85042519 snow_bear_328 A June 25, 2020, 4:13 p.m. OK Go TESTS 48 124 10854400
85078848 habibulka A June 25, 2020, 11:31 p.m. OK Java 11 TESTS 48 171 23859200
85021098 nz_nAJn A June 25, 2020, 3:27 p.m. OK Java 11 TESTS 48 187 23756800
85085295 wizard98 A June 26, 2020, 3:08 a.m. OK Java 11 TESTS 48 202 23961600
85045615 ankita1028 A June 25, 2020, 4:20 p.m. OK Java 11 TESTS 48 202 23961600
85035718 satya_2810 A June 25, 2020, 3:56 p.m. OK Java 11 TESTS 48 202 23961600
85035299 tirtho2107 A June 25, 2020, 3:55 p.m. OK Java 11 TESTS 48 202 23961600
85014918 anhtaihsgs A June 25, 2020, 3:17 p.m. OK Java 11 TESTS 48 202 23961600
85073239 srjvastri8 A June 25, 2020, 8:42 p.m. OK Java 11 TESTS 48 202 24064000
85069115 nitesh.dtu A June 25, 2020, 7:26 p.m. OK Java 11 TESTS 48 202 24064000
85065882 Piccadilly A June 25, 2020, 6:40 p.m. OK Java 11 TESTS 48 202 24064000
85093534 kunalkatiyar9 A June 26, 2020, 5:57 a.m. OK Java 8 TESTS 48 109 20377600
85085882 Manan8686 A June 26, 2020, 3:22 a.m. OK Java 8 TESTS 48 109 20377600
85070501 algo.java A June 25, 2020, 7:49 p.m. OK Java 8 TESTS 48 109 20377600
85067955 A5SAS51N A June 25, 2020, 7:08 p.m. OK Java 8 TESTS 48 109 20377600
85065904 Magikarp1 A June 25, 2020, 6:41 p.m. OK Java 8 TESTS 48 109 20377600
85033741 adarshm_26 A June 25, 2020, 3:52 p.m. OK Java 8 TESTS 48 109 20377600
85015084 shivang_1234 A June 25, 2020, 3:17 p.m. OK Java 8 TESTS 48 109 20377600
85085739 saiharish A June 26, 2020, 3:18 a.m. OK Java 8 TESTS 48 109 20480000
85023899 pulkit14 A June 25, 2020, 3:32 p.m. OK Java 8 TESTS 48 109 20787200
85093157 conquerorArpit A June 26, 2020, 5:52 a.m. OK Java 8 TESTS 48 124 20377600
85081696 Spheniscine A June 26, 2020, 1:23 a.m. OK Kotlin TESTS 48 124 20480000
85061646 ivanocj A June 25, 2020, 5:46 p.m. OK Kotlin TESTS 48 140 21094400
85047559 sultazat A June 25, 2020, 4:25 p.m. OK Kotlin TESTS 48 140 21196800
85027360 v4_adi A June 25, 2020, 3:38 p.m. OK Kotlin TESTS 48 156 21708800
85018675 Ruslan_Rud A June 25, 2020, 3:23 p.m. OK Kotlin TESTS 48 171 21708800
85083981 KanhuKeNanu A June 26, 2020, 2:37 a.m. OK Kotlin TESTS 48 171 21708800
85051593 riantkb A June 25, 2020, 4:33 p.m. OK Mono C# TESTS 48 62 9216000
85072330 Smiita A June 25, 2020, 8:23 p.m. OK MS C++ TESTS 48 31 4096000
85017229 Clocklight A June 25, 2020, 3:21 p.m. OK MS C++ TESTS 48 31 4096000
85019758 twix123 A June 25, 2020, 3:25 p.m. OK MS C++ 2017 TESTS 48 31 3686400
85063651 imraazib A June 25, 2020, 6:10 p.m. OK MS C++ 2017 TESTS 48 31 3788800
85080542 pengyule A June 26, 2020, 12:36 a.m. OK MS C++ 2017 TESTS 48 31 3993600
85089642 Mbox A June 26, 2020, 4:43 a.m. OK MS C++ 2017 TESTS 48 31 3993600
85017326 hyyy_ele A June 25, 2020, 3:21 p.m. OK MS C++ 2017 TESTS 48 31 3993600
85025163 SyberiaEmperor A June 25, 2020, 3:34 p.m. OK MS C++ 2017 TESTS 48 46 3686400
85084666 snnnnnn A June 26, 2020, 2:53 a.m. OK MS C++ 2017 TESTS 48 46 3788800
85061993 kongoujisawa2358 A June 25, 2020, 5:50 p.m. OK MS C++ 2017 TESTS 48 46 3788800
85061686 Asthebel99 A June 25, 2020, 5:46 p.m. OK MS C++ 2017 TESTS 48 46 3788800
85024541 Myao A June 25, 2020, 3:33 p.m. OK MS C++ 2017 TESTS 48 46 3788800
85016897 Loremon A June 25, 2020, 3:20 p.m. OK Node.js TESTS 48 93 13414400
85086595 cokifigue A June 26, 2020, 3:38 a.m. OK Node.js TESTS 48 109 13414400
85055382 explorer_sifat A June 25, 2020, 4:49 p.m. OK Node.js TESTS 48 109 13414400
85031277 OmniSliver A June 25, 2020, 3:46 p.m. OK Node.js TESTS 48 124 13414400
85039674 sarvagya8 A June 25, 2020, 4:06 p.m. OK Node.js TESTS 48 124 14950400
85060712 crapplet A June 25, 2020, 5:35 p.m. OK PyPy 2 TESTS 48 155 23654400
85069512 snape_here A June 25, 2020, 7:32 p.m. OK PyPy 2 TESTS 48 265 31948800
85060901 UTMoonlight A June 25, 2020, 5:37 p.m. OK PyPy 3 TESTS 48 155 21708800
85053808 PS41 A June 25, 2020, 4:40 p.m. OK PyPy 3 TESTS 48 155 22220800
85064005 zahin52 A June 25, 2020, 6:15 p.m. OK PyPy 3 TESTS 48 155 23552000
85033433 Achilles221B A June 25, 2020, 3:51 p.m. OK PyPy 3 TESTS 48 156 23040000
85022256 GoatTimeDavis A June 25, 2020, 3:29 p.m. OK PyPy 3 TESTS 48 170 21504000
85083627 anilsaxena A June 26, 2020, 2:28 a.m. OK PyPy 3 TESTS 48 170 23142400
85056199 x3mka A June 25, 2020, 4:54 p.m. OK PyPy 3 TESTS 48 171 22220800
85024765 rishabhrathi22 A June 25, 2020, 3:33 p.m. OK PyPy 3 TESTS 48 171 23142400
85024050 Galaxy_Pegasus A June 25, 2020, 3:32 p.m. OK PyPy 3 TESTS 48 171 23142400
85060255 2019ucp1350 A June 25, 2020, 5:30 p.m. OK PyPy 3 TESTS 48 171 23244800
85068029 ap1008 A June 25, 2020, 7:09 p.m. OK Python 2 TESTS 48 187 6451200
85083052 KanhuKeNanu A June 26, 2020, 2:11 a.m. OK Python 3 TESTS 48 108 6656000
85087294 checkingagain A June 26, 2020, 3:55 a.m. OK Python 3 TESTS 48 109 6656000
85087146 checkingagain A June 26, 2020, 3:51 a.m. OK Python 3 TESTS 48 109 6656000
85086991 checkingagain A June 26, 2020, 3:48 a.m. OK Python 3 TESTS 48 109 6656000
85086952 checkingagain A June 26, 2020, 3:47 a.m. OK Python 3 TESTS 48 109 6656000
85085825 checkingagain A June 26, 2020, 3:21 a.m. OK Python 3 TESTS 48 109 6656000
85085363 _Kumarmohit_ A June 26, 2020, 3:09 a.m. OK Python 3 TESTS 48 109 6656000
85085347 rg4 A June 26, 2020, 3:09 a.m. OK Python 3 TESTS 48 109 6656000
85084006 WaAccept A June 26, 2020, 2:37 a.m. OK Python 3 TESTS 48 109 6656000
85067976 LintuStorm A June 25, 2020, 7:09 p.m. OK Python 3 TESTS 48 109 6656000
85024751 masa0216masa0216masa0216 A June 25, 2020, 3:33 p.m. OK Ruby TESTS 48 62 6451200
85047095 ktn_yuta A June 25, 2020, 4:24 p.m. OK Rust TESTS 48 46 3788800
85082591 Russell_Emerine A June 26, 2020, 1:56 a.m. OK Rust TESTS 48 46 4096000
85023431 bqn A June 25, 2020, 3:31 p.m. OK Rust TESTS 48 46 4096000
85056402 IvanDyachenko A June 25, 2020, 4:55 p.m. OK Scala TESTS 48 545 39936000
85057032 IvanDyachenko A June 25, 2020, 4:59 p.m. OK Scala TESTS 48 546 39936000

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