Median

Find the median of a stream of binary integers as fast as possible.

Input: 100 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The median value, printed as a decimal string. The median is defined as the element at index N/2 (i.e., a[50000000]) in the sorted array.

Restrictions:20s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.11	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Date	Author	Language	Status	Score
Jul 6, 2025 21:16	Valentin Kofman	CPPclang++18.1.3	Success	15,576
Jul 6, 2025 21:12	Valentin Kofman	CPPclang++18.1.3	Error
Jul 6, 2025 21:03	Valentin Kofman	CPPclang++18.1.3	Success	15,458
Jul 6, 2025 21:02	Valentin Kofman	CPPclang++18.1.3	Success	15,449+30.88 RP
Jul 6, 2025 18:22	Adam Folwarczny	CPPg++13.3.0	Error
Jul 6, 2025 18:18	Adam Folwarczny	CPPg++13.3.0	Success	18,811
Jul 6, 2025 18:02	Adam Folwarczny	CPPg++13.3.0	Success	18,807
Jul 6, 2025 15:25	Valentin Kofman	CPPclang++18.1.3	Success	16,856
Jul 6, 2025 15:17	Valentin Kofman	CPPg++13.3.0	Success	16,989
Jul 6, 2025 15:16	Valentin Kofman	CPPclang++18.1.3	Success	16,223+35.86 RP
Jul 6, 2025 13:03	Valentin Kofman	CPPclang++18.1.3	Success	20,232
Jul 6, 2025 12:59	Valentin Kofman	CPPclang++18.1.3	Error
Jul 6, 2025 12:45	Valentin Kofman	CPPclang++18.1.3	Success	22,649
Jul 6, 2025 12:36	Valentin Kofman	CPPg++13.3.0	Error
Jul 6, 2025 12:34	Valentin Kofman	CPPclang++18.1.3	Success	23,499
Jul 6, 2025 12:32	Valentin Kofman	CPPclang++18.1.3	Success	22,309
Jul 6, 2025 12:31	Valentin Kofman	CPPg++13.3.0	Success	24,657
Jul 6, 2025 12:29	Valentin Kofman	CPPclang++18.1.3	Success	22,686
Jul 6, 2025 12:27	Valentin Kofman	CPPclang++18.1.3	Success	25,047
Jul 6, 2025 12:13	Valentin Kofman	CPPclang++18.1.3	Success	17,515
Jul 6, 2025 12:12	Valentin Kofman	CPPg++13.3.0	Success	21,068
Jul 6, 2025 12:09	Valentin Kofman	CPPg++13.3.0	Success	19,450
Jul 6, 2025 12:06	Valentin Kofman	CPPg++13.3.0	Success	18,243
Jul 6, 2025 12:00	Valentin Kofman	CPPg++13.3.0	Error
Jul 6, 2025 11:55	Valentin Kofman	CPPg++13.3.0	Success	18,241
Jul 6, 2025 11:54	Valentin Kofman	CPPg++13.3.0	Success	21,594
Jul 6, 2025 11:45	Valentin Kofman	CPPg++13.3.0	Success	17,653
Jul 6, 2025 11:32	Valentin Kofman	CPPg++13.3.0	Success	17,225+35.32 RP
Jul 6, 2025 11:27	Valentin Kofman	CPPg++13.3.0	Success	24,497
Jul 6, 2025 11:17	Valentin Kofman	CPPg++13.3.0	Success	31,083
Jul 6, 2025 11:02	Aniruddha Deb	CPPg++13.3.0	Success	4,043+2.44 RP
Jul 6, 2025 10:57	Aniruddha Deb	CPPg++13.3.0	Success	4,047+729.11 RP
Jul 6, 2025 10:56	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:55	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:55	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:15	Aniruddha Deb	CPPg++13.3.0	Success	5,741+5.14 RP
Jul 6, 2025 10:07	Aniruddha Deb	CPPg++13.3.0	Success	5,878
Jul 6, 2025 10:07	Aniruddha Deb	CPPg++13.3.0	Success	5,859
Jul 6, 2025 10:06	Aniruddha Deb	CPPg++13.3.0	Success	6,076
Jul 6, 2025 10:06	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:06	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:05	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:04	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:03	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:01	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:01	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:01	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 10:00	Aniruddha Deb	CPPg++13.3.0	Success	5,758+13.47 RP
Jul 6, 2025 09:59	Aniruddha Deb	CPPg++13.3.0	Success	5,883
Jul 6, 2025 09:59	Aniruddha Deb	CPPg++13.3.0	Success	5,834
Jul 6, 2025 09:56	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:55	Aniruddha Deb	CPPg++13.3.0	Success	5,882
Jul 6, 2025 09:54	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:52	Aniruddha Deb	CPPg++13.3.0	Success	5,803+124.78 RP
Jul 6, 2025 09:51	Aniruddha Deb	CPPg++13.3.0	Success	6,256+136.05 RP
Jul 6, 2025 09:50	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:46	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:45	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:43	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 09:21	Valentin Kofman	CPPg++13.3.0	Success	23,414
Jul 6, 2025 09:16	Valentin Kofman	CPPg++13.3.0	Success	18,341+189.77 RP
Jul 6, 2025 09:08	Valentin Kofman	CPPg++13.3.0	Success	38,517
Jul 6, 2025 09:05	Valentin Kofman	CPPg++13.3.0	Success	28,133+6.02 RP
Jul 6, 2025 08:54	Valentin Kofman	CPPg++13.3.0	Success	28,618+230.81 RP
Jul 6, 2025 08:20	Valentin Kofman	CPPg++13.3.0	Success	84,301+118.62 RP
Jul 6, 2025 08:16	Aniruddha Deb	CPPg++13.3.0	Success	6,838+231.65 RP
Jul 6, 2025 08:15	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 08:09	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 08:09	Aniruddha Deb	CPPg++13.3.0	Success	8,125+120.40 RP
Jul 6, 2025 08:07	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 08:05	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 08:04	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 08:02	Aniruddha Deb	CPPg++13.3.0	Success	9,006+209.88 RP
Jul 6, 2025 08:01	Aniruddha Deb	CPPg++13.3.0	Success	11,725
Jul 6, 2025 08:01	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:57	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:57	Aniruddha Deb	CPPg++13.3.0	Success	12,987
Jul 6, 2025 07:56	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:55	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:54	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:54	Aniruddha Deb	CPPg++13.3.0	Success	27,130
Jul 6, 2025 07:45	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:44	Aniruddha Deb	CPPg++13.3.0	Error
Jul 6, 2025 07:41	Aniruddha Deb	CPPg++13.3.0	Error
Jul 5, 2025 22:40	Adam Folwarczny	CPPg++13.3.0	Error
Jul 5, 2025 22:38	Adam Folwarczny	CPPg++13.3.0	Error
Jul 5, 2025 22:37	Adam Folwarczny	CPPg++13.3.0	Error
Jul 5, 2025 22:30	Adam Folwarczny	CPPg++13.3.0	Success	18,706+47.73 RP
Jul 5, 2025 22:22	Adam Folwarczny	CPPg++13.3.0	Success	20,540+87.27 RP
Jul 4, 2025 23:39	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:36	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:34	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:32	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:27	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:25	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:24	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:22	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:21	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 23:20	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 22:29	Aniruddha Deb	CPPg++13.3.0	Success	11,780

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1