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	1:20.1.2-0ubuntu1~24.04.2	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.
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	3.0.13-0ubuntu3.9	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
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
May 7, 2025 08:36	Keefe	CPPg++13.3.0	Success	13,532
May 7, 2025 08:33	Keefe	CPPg++13.3.0	Error
May 7, 2025 08:30	Keefe	CPPg++13.3.0	Success	11,120+66.78 RP
May 7, 2025 08:28	Keefe	CPPg++13.3.0	Success	12,012+174.91 RP
May 6, 2025 20:21	Aniruddha Deb	CPPg++13.3.0	Success	11,105+36.49 RP
May 6, 2025 20:19	Aniruddha Deb	CPPg++13.3.0	Success	11,798
May 6, 2025 20:19	Aniruddha Deb	CPPg++13.3.0	Success	11,574+17.12 RP
May 6, 2025 20:16	Aniruddha Deb	CPPg++13.3.0	Success	11,808+52.41 RP
May 6, 2025 20:08	Aniruddha Deb	CPPg++13.3.0	Success	12,587+499.94 RP
May 6, 2025 19:54	Aniruddha Deb	CPPg++13.3.0	Success	33,952+7.56 RP
May 6, 2025 19:52	Aniruddha Deb	CPPg++13.3.0	Success	34,847+188.03 RP
May 6, 2025 19:51	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:50	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:48	Aniruddha Deb	CPPg++13.3.0	Success	101,071+88.61 RP
May 6, 2025 19:46	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:45	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:44	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:41	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 19:39	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 18:42	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 18:40	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 18:39	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 18:35	Aniruddha Deb	CPPg++13.3.0	Error
May 6, 2025 18:21	Aniruddha Deb	CPPg++13.3.0	Error
May 5, 2025 16:51	Aniruddha Deb	CPPg++13.3.0	Success	1,061,544
May 5, 2025 16:48	Aniruddha Deb	CPPg++13.3.0	Success	980,540
May 5, 2025 16:48	Aniruddha Deb	CPPg++13.3.0	Success	974,516
May 5, 2025 16:45	Aniruddha Deb	CPPg++13.3.0	Success	974,909
May 5, 2025 16:39	Aniruddha Deb	CPPg++13.3.0	Success	976,079
May 5, 2025 16:27	Aniruddha Deb	CPPg++13.3.0	Error
Apr 28, 2025 12:08	Keefe	CPPg++13.3.0	Error
Apr 28, 2025 11:53	Keefe	CPPg++13.3.0	Success	15,207+66.09 RP
Apr 28, 2025 11:50	Keefe	CPPg++13.3.0	Success	16,906+68.82 RP
Apr 28, 2025 06:53	Keefe	CPPg++13.3.0	Success	19,132+243.01 RP
Apr 28, 2025 06:52	Keefe	CPPg++13.3.0	Success	35,756+2.20 RP
Apr 28, 2025 06:51	Keefe	CPPg++13.3.0	Success	36,040+1.43 RP
Apr 28, 2025 06:51	Keefe	CPPg++13.3.0	Success	36,227+101.68 RP
Apr 24, 2025 14:42	Emanuele Bolognesi	RUSTrust-1.86.0	Success	41,588
Apr 24, 2025 14:34	Emanuele Bolognesi	RUSTrust-1.86.0	Success	41,317+2.16 RP
Apr 24, 2025 14:27	Emanuele Bolognesi	RUSTrust-1.86.0	Success	42,179
Apr 24, 2025 14:22	Emanuele Bolognesi	RUSTrust-1.86.0	Success	41,689+29.61 RP
Apr 24, 2025 13:48	Emanuele Bolognesi	RUSTrust-1.86.0	Success	47,559+193.18 RP
Apr 24, 2025 13:41	Emanuele Bolognesi	RUSTrust-1.86.0	Success	952,025
Apr 24, 2025 10:27	Emanuele Bolognesi	RUSTrust-1.86.0	Success	585,331+17.08 RP
Apr 24, 2025 02:05	Keefe	CPPg++13.3.0	Error
Apr 24, 2025 02:02	Keefe	CPPg++13.3.0	Success	61,000
Apr 24, 2025 02:01	Keefe	CPPg++13.3.0	Success	61,055
Apr 24, 2025 02:00	Keefe	CPPg++13.3.0	Success	57,355+6.57 RP
Apr 24, 2025 01:58	Keefe	CPPg++13.3.0	Success	59,601+75.37 RP
Apr 22, 2025 10:59	NoSIMD_C#	CSHARP9.0.4	Error
Apr 22, 2025 10:54	NoSIMD_C#	CSHARP9.0.4	Error
Apr 22, 2025 10:48	NoSIMD_C#	CSHARP9.0.4	Success	370,622
Apr 22, 2025 10:45	NoSIMD_C#	CSHARP9.0.4	Success	374,036
Apr 22, 2025 10:44	NoSIMD_C#	CSHARP9.0.4	Success	193,150
Apr 22, 2025 10:42	NoSIMD_C#	CSHARP9.0.4	Success	462,938
Apr 22, 2025 10:26	NoSIMD_C#	CSHARP9.0.4	Success	747,942
Apr 22, 2025 10:15	NoSIMD_C#	CSHARP9.0.4	Error

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