→ About Contest
The 2009 ACM-ICPC East Central North America Regional Programming Contest (ACM-ICPC ECNA RPC) was held on Saturday October 31, 2009. We had 115 teams drawn from 60 colleges and universities throughout western Pennsylvania, Ohio, Michigan, eastern Ontario, and Indiana (excluding the Greater Chicago Metropolitan Area).
→ Virtual participation
Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.
→ Practice?
Want to solve the contest problems after the official contest ends? Just register for practice and you will be able to submit solutions.
→ Status filter
→ Contest materials
Problem A - Arithmetically Challenged
Contest status
| # | When | Who | Problem | Lang | Verdict | Time | Memory |
|---|---|---|---|---|---|---|---|
| 328789600 | Jul/13/2025 17:08 | rlc202204 | A - Arithmetically Challenged | C++20 (GCC 13-64) | Accepted | 46 ms | 39200 KB |
| 12680801 | Aug/24/2015 10:12 | South Ural State U: Nevermind: AK93, jlahcejlot, Niketeen# | A - Arithmetically Challenged | MS C++ | Accepted | 78 ms | 0 KB |
| 12006006 | Jul/11/2015 11:53 | suchdoubi# | A - Arithmetically Challenged | GNU C++ | Accepted | 30 ms | 0 KB |
| 30229332 | Sep/09/2017 18:54 | I_Love_Zzq | A - Arithmetically Challenged | GNU C++ | Accepted | 15 ms | 0 KB |
| 30246042 | Sep/10/2017 16:20 | vjudge3 | A - Arithmetically Challenged | C++14 (GCC 6-32) | Accepted | 15 ms | 200 KB |
| 30102610 | Sep/05/2017 17:42 | libra9z | A - Arithmetically Challenged | C++14 (GCC 6-32) | Accepted | 15 ms | 100 KB |
| 13925219 | Oct/29/2015 04:11 | cmu04: diemoldau, sidzekrom, eescando# | A - Arithmetically Challenged | Java 8 | Accepted | 124 ms | 0 KB |
| 13924604 | Oct/29/2015 02:28 | CMU1: wxyxinyu, bluepichu, nhrubin# | A - Arithmetically Challenged | Java 7 | Accepted | 109 ms | 0 KB |
| 311942775 | Mar/23/2025 04:11 | mion_sonozaki | A - Arithmetically Challenged | C++20 (GCC 13-64) | Accepted | 46 ms | 0 KB |
| 18056119 | May/24/2016 16:34 | llaa | A - Arithmetically Challenged | GNU C++ | Accepted | 15 ms | 2500 KB |
| 13925127 | Oct/29/2015 03:56 | UMC2: Yoshiap, mattdee123, Strikeskids# | A - Arithmetically Challenged | Java 8 | Accepted | 139 ms | 0 KB |
| 330537617 | Jul/23/2025 18:25 | we_114514 | A - Arithmetically Challenged | C++20 (GCC 13-64) | Accepted | 46 ms | 100 KB |
| 34001543 | Jan/08/2018 13:48 | vjudge1 | A - Arithmetically Challenged | C++14 (GCC 6-32) | Accepted | 15 ms | 2000 KB |
| 16686063 | Mar/13/2016 08:59 | safarisoul# | A - Arithmetically Challenged | Java 8 | Accepted | 186 ms | 0 KB |
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