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 4, 2025 22:28	Aniruddha Deb	CPPg++13.3.0	Success	12,282
Jul 4, 2025 22:21	Aniruddha Deb	CPPg++13.3.0	Error
Jul 4, 2025 22:20	Aniruddha Deb	CPPg++13.3.0	Success	12,468
Jul 2, 2025 20:53	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 20:35	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 20:34	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 20:16	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 20:15	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 20:14	Aniruddha Deb	CPPg++13.3.0	Error
Jul 2, 2025 17:31	Aniruddha Deb	CPPg++13.3.0	Error
Jul 1, 2025 20:59	Adam Folwarczny	CPPg++13.3.0	Success	25,026+41.29 RP
Jul 1, 2025 20:56	Adam Folwarczny	CPPg++13.3.0	Success	27,910+17.57 RP
Jul 1, 2025 20:56	Adam Folwarczny	CPPg++13.3.0	Success	61,580
Jul 1, 2025 20:55	Adam Folwarczny	CPPg++13.3.0	Success	60,882
Jul 1, 2025 20:53	Adam Folwarczny	CPPg++13.3.0	Success	29,349+57.67 RP
Jun 29, 2025 20:42	Adam Folwarczny	CPPg++13.3.0	Success	57,874
Jun 29, 2025 20:41	Adam Folwarczny	CPPg++13.3.0	Success	59,219
Jun 28, 2025 19:50	Adam Folwarczny	CPPg++13.3.0	Success	68,198
Jun 28, 2025 19:47	Adam Folwarczny	CPPg++13.3.0	Success	69,641
Jun 28, 2025 19:46	Adam Folwarczny	CPPg++13.3.0	Success	69,462
Jun 28, 2025 19:32	Adam Folwarczny	CPPg++13.3.0	Success	122,244
Jun 28, 2025 19:31	Adam Folwarczny	CPPg++13.3.0	Success	113,252
Jun 28, 2025 19:27	Adam Folwarczny	CPPg++13.3.0	Success	120,730
Jun 28, 2025 19:22	Adam Folwarczny	CPPg++13.3.0	Error
Jun 28, 2025 19:19	Adam Folwarczny	CPPg++13.3.0	Error
Jun 28, 2025 19:18	Adam Folwarczny	CPPg++13.3.0	Error
Jun 28, 2025 19:16	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 22:15	Adam Folwarczny	CPPg++13.3.0	Success	35,329+43.05 RP
Jun 22, 2025 22:13	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 22:12	Adam Folwarczny	CPPg++13.3.0	Success	41,666+51.12 RP
Jun 22, 2025 22:08	Adam Folwarczny	CPPg++13.3.0	Success	65,102
Jun 22, 2025 22:02	Adam Folwarczny	CPPg++13.3.0	Success	62,624
Jun 22, 2025 22:01	Adam Folwarczny	CPPg++13.3.0	Success	52,943+12.73 RP
Jun 22, 2025 21:51	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 21:45	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 21:43	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 21:39	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 21:31	Adam Folwarczny	CPPg++13.3.0	Success	58,957
Jun 22, 2025 21:30	Adam Folwarczny	CPPg++13.3.0	Success	57,687
Jun 22, 2025 21:27	Adam Folwarczny	CPPg++13.3.0	Success	58,211
Jun 22, 2025 20:49	Adam Folwarczny	CPPg++13.3.0	Success	56,770+20.66 RP
Jun 22, 2025 20:46	Adam Folwarczny	CPPg++13.3.0	Success	64,315+2.51 RP
Jun 22, 2025 20:45	Adam Folwarczny	CPPg++13.3.0	Success	65,477
Jun 22, 2025 20:41	Adam Folwarczny	CPPg++13.3.0	Success	72,474
Jun 22, 2025 20:36	Adam Folwarczny	CPPg++13.3.0	Error
Jun 22, 2025 20:34	Adam Folwarczny	CPPg++13.3.0	Success	65,372+38.42 RP
Jun 22, 2025 20:30	Adam Folwarczny	CPPg++13.3.0	Success	87,300+5.75 RP
Jun 22, 2025 11:59	Adam Folwarczny	CPPg++13.3.0	Error
Jun 21, 2025 21:01	Aniruddha Deb	CPPg++13.3.0	Error
Jun 20, 2025 21:46	Adam Folwarczny	CPPg++13.3.0	Success	118,975
Jun 20, 2025 21:44	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:39	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:32	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:11	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:09	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:08	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:07	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:06	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 21:03	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 20:52	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 20:49	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 20:47	Adam Folwarczny	CPPg++13.3.0	Error
Jun 20, 2025 20:38	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 22:28	Adam Folwarczny	CPPg++13.3.0	Success	332,372
Jun 19, 2025 22:17	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 22:06	Adam Folwarczny	CPPg++13.3.0	Success	91,911+13.11 RP
Jun 19, 2025 22:03	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:55	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:54	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:52	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:49	Adam Folwarczny	CPPg++13.3.0	Success	105,914
Jun 19, 2025 21:46	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:45	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:44	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:42	Adam Folwarczny	CPPg++13.3.0	Error
Jun 19, 2025 21:40	Adam Folwarczny	CPPg++13.3.0	Success	104,498+85.43 RP
Jun 19, 2025 21:36	Adam Folwarczny	CPPg++13.3.0	Success	973,900+10.27 RP
Jun 8, 2025 17:28	thatmagicalcat	CPPg++13.3.0	Success	974,283+10.26 RP
Jun 1, 2025 10:54	Keefe	CPPg++13.3.0	Error
Jun 1, 2025 10:52	Keefe	CPPg++13.3.0	Error
Jun 1, 2025 08:40	Keefe	CPPg++13.3.0	Success	27,231
Jun 1, 2025 08:39	Keefe	CPPg++13.3.0	Success	12,369
May 31, 2025 15:38	Keefe	CPPclang++18.1.3	Success	13,020
May 25, 2025 02:25	Emanuele Bolognesi	CPPg++13.3.0	Success	112,264
May 24, 2025 07:48	Keefe	CPPg++13.3.0	Success	126,475
May 24, 2025 07:46	Keefe	CPPg++13.3.0	Error
May 24, 2025 07:39	Keefe	CPPg++13.3.0	Error
May 24, 2025 07:38	Keefe	CPPg++13.3.0	Error
May 24, 2025 07:35	Keefe	CPPg++13.3.0	Error
May 24, 2025 07:34	Keefe	CPPg++13.3.0	Error
May 24, 2025 07:29	Keefe	CPPg++13.3.0	Success	11,197
May 24, 2025 07:25	Keefe	CPPg++13.3.0	Success	14,363
May 24, 2025 07:24	Keefe	CPPg++13.3.0	Error
May 12, 2025 01:24	Christopher Tarry	CPPg++13.3.0	Error
May 12, 2025 00:05	Christopher Tarry	CPPg++13.3.0	Error
May 11, 2025 23:59	Christopher Tarry	CPPg++13.3.0	Success	102,845+86.95 RP
May 11, 2025 23:52	Christopher Tarry	CPPg++13.3.0	Success	972,852+10.28 RP
May 7, 2025 08:59	Keefe	CPPg++13.3.0	Success	11,014+0.41 RP
May 7, 2025 08:58	Keefe	CPPg++13.3.0	Success	11,019+8.24 RP
May 7, 2025 08:39	Keefe	CPPg++13.3.0	Success	13,175

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