Codeforces Global Round 9

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1375 Codeforces Global Round 9 FINISHED False 9000 143478911 July 4, 2020, 2:45 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 21515 ) C Element Extermination PROGRAMMING constructive algorithms greedy

B'You are given an array a of length n , which initially is a permutation of numbers from 1 to n . In one operation, you can choose an index i ( 1 <= q i < n ) such that a_i < a_{i + 1} , and remove either a_i or a_{i + 1} from the array (after the removal, the remaining parts are concatenated). For example, if you have the array [1, 3, 2] , you can choose i = 1 (since a_1 = 1 < a_2 = 3 ), then either remove a_1 which gives the new array [3, 2] , or remove a_2 which gives the new array [1, 2] . Is it possible to make the length of this array equal to 1 with these operations? The first line contains a single integer t ( 1 <= q t <= q 2 cdot 10^4 ) -- the number of test cases. The description of the test cases follows. The first line of each test case contains a single integer n ( 2 <= q n <= q 3 cdot 10^5 ) -- the length of the array. The second line of each test case contains n integers a_1 , a_2 , ..., a_n ( 1 <= q a_i <= q n , a_i are pairwise distinct) -- elements of the array. It is guaranteed that the sum of n over all test cases doesn 't exceed 3 cdot 10^5 . For each test case, output on a single line the word "YES" if it is possible to reduce the array to a single element using the aforementioned operation, or "NO" if it is impossible to do so. For the first two test cases and the fourth test case, we can operate as follow (the bolded elements are the pair chosen for that operation): [ text{1}, textbf{2}, textbf{3}] rightarrow [ textbf{1}, textbf{2}] rightarrow [ text{1}] [ text{3}, textbf{1}, textbf{2}, text{4}] rightarrow [ text{3}, textbf{1}, textbf{4}] rightarrow [ textbf{3}, textbf{4}] rightarrow [ text{4}] [ textbf{2}, textbf{4}, text{6}, text{1}, text{3}, text{5}] rightarrow [ textbf{4}, textbf{6}, text{1}, text{3}, text{5}] rightarrow [ tex'...

Tutorials

79731

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
85989722 physics0523 C July 4, 2020, 4:56 p.m. OK GNU C11 TESTS 17 78 8089600
85968274 ja1467 C July 4, 2020, 3:54 p.m. OK GNU C11 TESTS 17 124 3686400
85989825 harsh_20 C July 4, 2020, 4:56 p.m. OK GNU C11 TESTS 17 124 4915200
85959272 kingpin119 C July 4, 2020, 3:33 p.m. OK GNU C11 TESTS 17 124 4915200
86023707 RaviVK C July 5, 2020, 4:49 a.m. OK GNU C11 TESTS 17 124 5120000
85980937 pritesh19singh C July 4, 2020, 4:29 p.m. OK GNU C11 TESTS 17 124 6041600
86001375 MTMehreen C July 4, 2020, 6:10 p.m. OK GNU C11 TESTS 17 124 6041600
85968494 anujsinghal C July 4, 2020, 3:54 p.m. OK GNU C11 TESTS 17 124 6348800
85992515 abir101 C July 4, 2020, 5:04 p.m. OK GNU C11 TESTS 17 140 4300800
86007299 Abrar_Al_Samit C July 4, 2020, 7:41 p.m. OK GNU C11 TESTS 17 140 4915200
85966720 smsylby C July 4, 2020, 3:50 p.m. OK GNU C++11 TESTS 17 31 3686400
86016521 clfzs C July 5, 2020, 12:59 a.m. OK GNU C++11 TESTS 17 31 3891200
85981674 sun_sky C July 4, 2020, 4:31 p.m. OK GNU C++11 TESTS 17 31 4300800
86001714 absinthe C July 4, 2020, 6:13 p.m. OK GNU C++11 TESTS 17 31 5120000
85978380 SampsonYW C July 4, 2020, 4:22 p.m. OK GNU C++11 TESTS 17 31 5120000
85960961 SPyofgame C July 4, 2020, 3:37 p.m. OK GNU C++11 TESTS 17 31 5120000
85958943 yy_makemelove C July 4, 2020, 3:33 p.m. OK GNU C++11 TESTS 17 31 5120000
85958700 Clever_Jimmy C July 4, 2020, 3:32 p.m. OK GNU C++11 TESTS 17 31 5120000
85964476 Yukikaze_ C July 4, 2020, 3:45 p.m. OK GNU C++11 TESTS 17 31 6348800
85961489 emoairx C July 4, 2020, 3:38 p.m. OK GNU C++11 TESTS 17 31 6963200
86013965 Linkus C July 4, 2020, 10:55 p.m. OK GNU C++14 TESTS 17 46 4915200
85959624 seaguy C July 4, 2020, 3:34 p.m. OK GNU C++14 TESTS 17 62 4915200
85983331 Lionel_messi10 C July 4, 2020, 4:37 p.m. OK GNU C++14 TESTS 17 77 4915200
85967308 up1611 C July 4, 2020, 3:51 p.m. OK GNU C++14 TESTS 17 77 4915200
85955772 snehil1111 C July 4, 2020, 3:26 p.m. OK GNU C++14 TESTS 17 77 6144000
85971204 nishantc279m C July 4, 2020, 4:02 p.m. OK GNU C++14 TESTS 17 77 6246400
85990816 papon_50 C July 4, 2020, 4:59 p.m. OK GNU C++14 TESTS 17 77 6860800
86018041 k4droid3 C July 5, 2020, 2:09 a.m. OK GNU C++14 TESTS 17 78 3686400
86008736 Ehab_Fawzy C July 4, 2020, 8:10 p.m. OK GNU C++14 TESTS 17 78 3686400
86003189 ashwanikr1 C July 4, 2020, 6:33 p.m. OK GNU C++14 TESTS 17 78 3686400
86015780 liangjiawen2007 C July 5, 2020, 12:25 a.m. OK GNU C++17 TESTS 17 31 8192000
85957365 whzzt C July 4, 2020, 3:29 p.m. OK GNU C++17 TESTS 17 31 11980800
86017304 FHVirus C July 5, 2020, 1:39 a.m. OK GNU C++17 TESTS 17 46 5939200
85961947 IgorSmirnov C July 4, 2020, 3:39 p.m. OK GNU C++17 TESTS 17 46 6144000
86017564 jintiandun C July 5, 2020, 1:51 a.m. OK GNU C++17 TESTS 17 61 5120000
85984670 zhouzhi C July 4, 2020, 4:41 p.m. OK GNU C++17 TESTS 17 62 3686400
85980322 huypt C July 4, 2020, 4:28 p.m. OK GNU C++17 TESTS 17 62 7270400
86001395 AvinashKartik C July 4, 2020, 6:10 p.m. OK GNU C++17 TESTS 17 77 4505600
85992320 Anubhabghosh C July 4, 2020, 5:03 p.m. OK GNU C++17 TESTS 17 77 4915200
86026858 ASM_ATIKUR C July 5, 2020, 5:51 a.m. OK GNU C++17 TESTS 17 77 4915200
86007124 axat0081 C July 4, 2020, 7:37 p.m. OK GNU C++17 (64) TESTS 17 31 8806400
86002833 jainbot27 C July 4, 2020, 6:28 p.m. OK GNU C++17 (64) TESTS 17 46 5222400
86014548 AQZZ C July 4, 2020, 11:22 p.m. OK GNU C++17 (64) TESTS 17 46 5529600
86000714 sanyam1101 C July 4, 2020, 6:02 p.m. OK GNU C++17 (64) TESTS 17 46 5529600
86010412 hello_codeforces C July 4, 2020, 8:50 p.m. OK GNU C++17 (64) TESTS 17 46 5529600
86022199 m.hasan01 C July 5, 2020, 4:11 a.m. OK GNU C++17 (64) TESTS 17 46 6758400
85957499 Anila9007 C July 4, 2020, 3:30 p.m. OK GNU C++17 (64) TESTS 17 61 4300800
85958652 galaxy_warrior C July 4, 2020, 3:32 p.m. OK GNU C++17 (64) TESTS 17 61 4300800
85973360 i_love_dariia C July 4, 2020, 4:07 p.m. OK GNU C++17 (64) TESTS 17 61 4300800
85987555 3BS_AS C July 4, 2020, 4:49 p.m. OK GNU C++17 (64) TESTS 17 61 4300800
85989052 Aidar.Babanov C July 4, 2020, 4:54 p.m. OK Go TESTS 17 202 15155200
85956911 Xylenox C July 4, 2020, 3:28 p.m. OK Go TESTS 17 202 15155200
85999288 sf14t C July 4, 2020, 5:51 p.m. OK Java 11 TESTS 17 171 23756800
86004808 In_The_Name_Of_Love C July 4, 2020, 6:56 p.m. OK Java 11 TESTS 17 171 23859200
85998988 saikaushik C July 4, 2020, 5:49 p.m. OK Java 11 TESTS 17 171 23859200
85974306 vishesh1999gupta C July 4, 2020, 4:10 p.m. OK Java 11 TESTS 17 186 23859200
85961703 RockStar_14 C July 4, 2020, 3:39 p.m. OK Java 11 TESTS 17 187 23859200
85958504 elkadymohammed01 C July 4, 2020, 3:32 p.m. OK Java 11 TESTS 17 187 23859200
85990288 RomitGandhi07 C July 4, 2020, 4:58 p.m. OK Java 11 TESTS 17 187 24166400
85970726 avijit_agarwal C July 4, 2020, 4 p.m. OK Java 11 TESTS 17 202 23756800
85998986 Piccadilly C July 4, 2020, 5:49 p.m. OK Java 11 TESTS 17 202 29184000
86014199 bubbl C July 4, 2020, 11:05 p.m. OK Java 11 TESTS 17 217 24780800
86001814 prem_cse C July 4, 2020, 6:14 p.m. OK Java 8 TESTS 17 109 20480000
85999258 Pranay2516 C July 4, 2020, 5:51 p.m. OK Java 8 TESTS 17 109 20480000
85972384 shashwat07 C July 4, 2020, 4:05 p.m. OK Java 8 TESTS 17 109 20480000
85966444 sizzula C July 4, 2020, 3:49 p.m. OK Java 8 TESTS 17 124 20377600
86004024 mei_hu_don C July 4, 2020, 6:44 p.m. OK Java 8 TESTS 17 124 20377600
85992123 Bhavya_Arora C July 4, 2020, 5:03 p.m. OK Java 8 TESTS 17 124 20377600
85990632 kunalkatiyar9 C July 4, 2020, 4:59 p.m. OK Java 8 TESTS 17 124 20377600
85985665 maanit_s C July 4, 2020, 4:44 p.m. OK Java 8 TESTS 17 124 20377600
85966697 thisSideAnonymous C July 4, 2020, 3:50 p.m. OK Java 8 TESTS 17 124 20377600
85958221 mufaddalnaya C July 4, 2020, 3:31 p.m. OK Java 8 TESTS 17 124 20377600
86004926 Loremon C July 4, 2020, 6:58 p.m. OK JavaScript TESTS 17 155 38092800
86016767 Spheniscine C July 5, 2020, 1:12 a.m. OK Kotlin TESTS 17 139 20582400
86014257 ekaerovets C July 4, 2020, 11:08 p.m. OK Kotlin TESTS 17 155 20480000
86011406 ekaerovets C July 4, 2020, 9:20 p.m. OK Kotlin TESTS 17 155 26009600
86013704 Hakiobo C July 4, 2020, 10:43 p.m. OK Kotlin TESTS 17 187 20992000
85998732 sylvyrfysh C July 4, 2020, 5:48 p.m. OK Kotlin TESTS 17 187 22220800
85988887 slemus C July 4, 2020, 4:54 p.m. OK Kotlin TESTS 17 311 47820800
85958490 batkhuyag C July 4, 2020, 3:32 p.m. OK Kotlin TESTS 17 358 47308800
85991243 agent-10 C July 4, 2020, 5 p.m. OK Kotlin TESTS 17 373 47308800
86005868 elizarov C July 4, 2020, 7:16 p.m. OK Kotlin TESTS 17 374 47308800
85975674 abdukodir C July 4, 2020, 4:14 p.m. OK Kotlin TESTS 17 389 53964800
86020731 treasuryonly C July 5, 2020, 3:29 a.m. OK Mono C# TESTS 17 124 32972800
85957044 EmK C July 4, 2020, 3:29 p.m. OK Mono C# TESTS 17 139 25497600
85967310 mban259 C July 4, 2020, 3:51 p.m. OK Mono C# TESTS 17 155 40345600
85976647 hedgedog C July 4, 2020, 4:17 p.m. OK Mono C# TESTS 17 156 34611200
85978932 Kolyanich C July 4, 2020, 4:23 p.m. OK Mono C# TESTS 17 171 12083200
85964495 terry_u16 C July 4, 2020, 3:45 p.m. OK Mono C# TESTS 17 171 38912000
86001049 Backs C July 4, 2020, 6:06 p.m. OK Mono C# TESTS 17 171 40140800
85968290 Arnyev C July 4, 2020, 3:54 p.m. OK Mono C# TESTS 17 171 41062400
85958622 lxhgww C July 4, 2020, 3:32 p.m. OK MS C++ TESTS 17 62 5120000
85956162 wp32pw C July 4, 2020, 3:27 p.m. OK MS C++ 2017 TESTS 17 93 4505600
86012646 P___ C July 4, 2020, 9:59 p.m. OK MS C++ 2017 TESTS 17 93 4608000
86017649 Cube219 C July 5, 2020, 1:54 a.m. OK MS C++ 2017 TESTS 17 93 5222400
85980336 zilioner C July 4, 2020, 4:28 p.m. OK MS C++ 2017 TESTS 17 108 5017600
85990661 tarattata1 C July 4, 2020, 4:59 p.m. OK MS C++ 2017 TESTS 17 109 4608000
85986512 hwqconceptnick C July 4, 2020, 4:46 p.m. OK MS C++ 2017 TESTS 17 109 6144000
85962608 tincan C July 4, 2020, 3:41 p.m. OK MS C++ 2017 TESTS 17 217 4915200
85978620 ohsolution C July 4, 2020, 4:22 p.m. OK MS C++ 2017 TESTS 17 217 5222400
85984365 vpike C July 4, 2020, 4:40 p.m. OK MS C++ 2017 TESTS 17 218 4915200
85985527 _Ani C July 4, 2020, 4:43 p.m. OK MS C++ 2017 TESTS 17 218 4915200
86000949 sanyacoder C July 4, 2020, 6:05 p.m. OK Perl TESTS 17 93 23244800
85957632 realnimish C July 4, 2020, 3:30 p.m. OK PyPy 2 TESTS 17 186 41062400
85963292 Pyar.Mahobat.Dhoka.Hai C July 4, 2020, 3:42 p.m. OK PyPy 2 TESTS 17 218 44032000
86000063 Satwik_Tiwari C July 4, 2020, 5:57 p.m. OK PyPy 2 TESTS 17 249 42291200
86012182 Satwik_Tiwari C July 4, 2020, 9:44 p.m. OK PyPy 2 TESTS 17 265 42086400
85991144 rajasbansal1998 C July 4, 2020, 5 p.m. OK PyPy 2 TESTS 17 592 40243200
85977870 raj1307 C July 4, 2020, 4:20 p.m. OK PyPy 2 TESTS 17 998 41779200
85979801 kfardeen7890 C July 4, 2020, 4:26 p.m. OK PyPy 3 TESTS 17 202 36659200
85964715 tamato C July 4, 2020, 3:45 p.m. OK PyPy 3 TESTS 17 202 37273600
85985900 gintoki_s C July 4, 2020, 4:44 p.m. OK PyPy 3 TESTS 17 202 43110400
86017555 YMSeah C July 5, 2020, 1:50 a.m. OK PyPy 3 TESTS 17 202 43212800
86000204 PracticeAccountICL C July 4, 2020, 5:58 p.m. OK PyPy 3 TESTS 17 217 42598400
85982007 govindsaj C July 4, 2020, 4:33 p.m. OK PyPy 3 TESTS 17 217 43212800
86024653 2019ucp1350 C July 5, 2020, 5:09 a.m. OK PyPy 3 TESTS 17 218 42598400
85985968 anoubhav C July 4, 2020, 4:45 p.m. OK PyPy 3 TESTS 17 218 42598400
85973811 yashwant_singh C July 4, 2020, 4:08 p.m. OK PyPy 3 TESTS 17 233 39526400
85956140 aberent C July 4, 2020, 3:27 p.m. OK PyPy 3 TESTS 17 233 41984000
85999658 nwi C July 4, 2020, 5:53 p.m. OK Python 2 TESTS 17 248 22835200
85991198 resita C July 4, 2020, 5 p.m. OK Python 2 TESTS 17 296 22425600
85962555 nandarustam C July 4, 2020, 3:41 p.m. OK Python 2 TESTS 17 311 17612800
85978131 junmiao C July 4, 2020, 4:21 p.m. OK Python 2 TESTS 17 327 18534400
85966281 ap1008 C July 4, 2020, 3:49 p.m. OK Python 2 TESTS 17 405 17817600
85970817 _aLso C July 4, 2020, 4:01 p.m. OK Python 2 TESTS 17 436 18841600
85983054 bl4ckc4t_2 C July 4, 2020, 4:36 p.m. OK Python 2 TESTS 17 451 17510400
85993151 amfolity C July 4, 2020, 5:06 p.m. OK Python 3 TESTS 17 187 21299200
85978665 r57shell C July 4, 2020, 4:22 p.m. OK Python 3 TESTS 17 217 20889600
85998883 upadhyay.aaditya2001 C July 4, 2020, 5:49 p.m. OK Python 3 TESTS 17 218 21299200
85985585 Sanchit2709 C July 4, 2020, 4:44 p.m. OK Python 3 TESTS 17 218 27648000
86025451 hellominchan C July 5, 2020, 5:25 a.m. OK Python 3 TESTS 17 218 27852800
86010438 shiv_99 C July 4, 2020, 8:50 p.m. OK Python 3 TESTS 17 233 27340800
85988181 ramzz C July 4, 2020, 4:51 p.m. OK Python 3 TESTS 17 233 27340800
85956320 _andyli C July 4, 2020, 3:27 p.m. OK Python 3 TESTS 17 233 27648000
86001750 fascineted C July 4, 2020, 6:14 p.m. OK Python 3 TESTS 17 233 27852800
86003225 Import_GARG C July 4, 2020, 6:33 p.m. OK Python 3 TESTS 17 234 27648000
85971315 GeoffreyY C July 4, 2020, 4:02 p.m. OK Rust TESTS 17 202 9728000
85967692 pandrei C July 4, 2020, 3:52 p.m. OK Rust TESTS 17 233 16896000
85978237 fatemender C July 4, 2020, 4:21 p.m. OK Rust TESTS 17 233 18022400
85988213 t_uchida C July 4, 2020, 4:51 p.m. OK Rust TESTS 17 264 10854400
86010572 IvanDyachenko C July 4, 2020, 8:54 p.m. OK Scala TESTS 17 654 69734400

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