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
Apr 4, 2025 08:36	NoSIMD_C#	CSHARP9.0.3	Error
Mar 25, 2025 19:19	Drew Garcia	CPPg++13.2.0	Error
Mar 25, 2025 19:19	Drew Garcia	CPPclang++18.1.3	Error
Mar 25, 2025 19:15	Drew Garcia	CPPg++13.2.0	Success	25,392+5.60 RP
Mar 25, 2025 19:11	Drew Garcia	CPPg++13.2.0	Success	32,254
Mar 25, 2025 19:03	Drew Garcia	CPPg++13.2.0	Success	25,758+66.56 RP
Mar 25, 2025 18:42	Drew Garcia	CPPg++13.2.0	Success	31,088+161.24 RP
Mar 19, 2025 08:54	Aryan Jain	CPPclang++18.1.3	Success	973,438+10.27 RP
Mar 12, 2025 20:20	Aniruddha Deb	CPPg++13.2.0	Success	967,985+10.33 RP
Mar 1, 2025 02:31	Keefe	CPPg++13.2.0	Success	143,173
Mar 1, 2025 02:28	Keefe	CPPg++13.2.0	Error
Mar 1, 2025 02:26	Keefe	CPPg++13.2.0	Error
Mar 1, 2025 02:24	Keefe	CPPg++13.2.0	Error
Feb 26, 2025 12:14	Oleg Kovalov	GOgo1.24.0	Error
Feb 26, 2025 12:07	Oleg Kovalov	GOgo1.24.0	Success	74,390
Feb 26, 2025 05:54	Eugene Zhydzetski	GOgo1.24.0	Success	21,439
Feb 26, 2025 05:50	Eugene Zhydzetski	GOgo1.24.0	Success	21,323+4.08 RP
Feb 26, 2025 05:46	Eugene Zhydzetski	GOgo1.24.0	Success	21,416+8.82 RP
Feb 10, 2025 07:00	NoSIMD_C#	CPPg++13.2.0	Success	961,236
Feb 3, 2025 05:51	NoSIMD_C#	CPPclang++18.1.3	Success	974,257
Feb 3, 2025 05:38	NoSIMD_C#	CPPg++13.2.0	Success	956,318+0.05 RP
Feb 3, 2025 05:30	NoSIMD_C#	CPPg++13.2.0	Error
Feb 2, 2025 18:50	HighloadGPT-o3-mini-high	CPPclang++18.1.3	Success	106,954+0.30 RP
Feb 2, 2025 18:47	HighloadGPT-o3-mini-high	CPPg++13.2.0	Success	107,299+93.20 RP
Feb 1, 2025 17:56	spacecat8086	CPPclang++18.1.3	Error
Feb 1, 2025 17:54	spacecat8086	CPPclang++18.1.3	Success	104,423
Feb 1, 2025 17:54	spacecat8086	CPPclang++18.1.3	Success	104,130
Feb 1, 2025 17:53	spacecat8086	CPPclang++18.1.3	Success	138,849
Feb 1, 2025 17:52	spacecat8086	CPPclang++18.1.3	Error
Feb 1, 2025 17:50	spacecat8086	CPPclang++18.1.3	Success	106,495
Feb 1, 2025 17:47	spacecat8086	CPPclang++18.1.3	Success	99,027+12.45 RP
Feb 1, 2025 17:46	spacecat8086	CPPclang++18.1.3	Error
Feb 1, 2025 17:40	spacecat8086	CPPclang++18.1.3	Success	112,955+78.18 RP
Feb 1, 2025 16:35	spacecat8086	CPPclang++18.1.3	Error
Feb 1, 2025 16:32	spacecat8086	CPPclang++18.1.3	Error
Feb 1, 2025 16:18	spacecat8086	CPPclang++18.1.3	Success	965,656+0.10 RP
Feb 1, 2025 16:11	spacecat8086	CPPclang++18.1.3	Success	975,544+10.25 RP
Jan 30, 2025 06:18	NoSIMD_C#	CSHARP9.0.1	Success	1,863,401
Jan 30, 2025 06:17	NoSIMD_C#	CSHARP9.0.1	Error
Jan 30, 2025 01:53	Keefe	CPPclang++18.1.3	Error
Jan 29, 2025 22:47	Keefe	CPPclang++18.1.3	Success	108,209+92.41 RP
Jan 29, 2025 22:43	Keefe	CPPclang++18.1.3	Error
Jan 29, 2025 22:36	Keefe	CPPclang++18.1.3	Error
Jan 29, 2025 10:44	NoSIMD_C#	CPPg++13.2.0	Error
Jan 28, 2025 00:16	Ian Mckibben	CPPg++13.2.0	Success	10,530+0.54 RP
Jan 28, 2025 00:14	Ian Mckibben	CPPg++13.2.0	Success	10,536+92.82 RP
Jan 28, 2025 00:06	Ian Mckibben	CPPg++13.2.0	Success	11,678+36.91 RP
Jan 28, 2025 00:05	Ian Mckibben	CPPg++13.2.0	Error
Jan 28, 2025 00:01	Ian Mckibben	CPPg++13.2.0	Error
Jan 27, 2025 23:54	Ian Mckibben	CPPg++13.2.0	Error
Jan 27, 2025 23:50	Ian Mckibben	CPPclang++18.1.3	Success	65,629
Jan 27, 2025 23:46	Ian Mckibben	CPPclang++18.1.3	Error
Jan 27, 2025 23:42	Ian Mckibben	CPPclang++18.1.3	Error
Jan 27, 2025 23:38	Ian Mckibben	CPPclang++18.1.3	Error
Jan 27, 2025 23:31	Ian Mckibben	CPPclang++18.1.3	Error
Jan 27, 2025 23:20	Ian Mckibben	CPPclang++18.1.3	Error
Jan 27, 2025 16:54	Oleg Kovalov	GOgo1.23.5	Success	68,142
Jan 27, 2025 16:53	Oleg Kovalov	GOgo1.23.5	Success	85,831
Jan 27, 2025 16:50	Oleg Kovalov	GOgo1.23.5	Success	76,309
Jan 23, 2025 08:33	NoSIMD_C#	CSHARP9.0.1	Success	1,705,330
Jan 22, 2025 22:47	Oleg Kovalov	CPPclang++18.1.3	Success	57,125+32.69 RP
Jan 22, 2025 22:45	Oleg Kovalov	CPPclang++18.1.3	Success	70,242+43.02 RP
Jan 22, 2025 22:42	Oleg Kovalov	CPPclang++18.1.3	Success	322,969
Jan 22, 2025 22:41	Oleg Kovalov	CPPclang++18.1.3	Success	315,946
Jan 22, 2025 22:21	Oleg Kovalov	CPPclang++18.1.3	Error
Jan 22, 2025 22:15	Oleg Kovalov	CPPclang++18.1.3	Success	126,833
Jan 22, 2025 20:46	Oleg Kovalov	CPPclang++18.1.3	Success	100,663+88.92 RP
Jan 22, 2025 20:45	Oleg Kovalov	CPPclang++18.1.3	Success	973,724
Jan 21, 2025 07:39	NoSIMD_C#	CSHARP9.0.1	Success	1,717,419
Jan 19, 2025 00:59	Ian Mckibben	CPPclang++18.1.3	Success	19,364
Jan 19, 2025 00:58	Ian Mckibben	CPPg++13.2.0	Success	13,909
Jan 19, 2025 00:57	Ian Mckibben	CPPg++13.2.0	Success	13,903
Jan 16, 2025 00:02	Ian Mckibben	CPPg++13.2.0	Success	12,214
Jan 16, 2025 00:01	Ian Mckibben	CPPg++13.2.0	Success	12,212
Jan 15, 2025 23:57	Ian Mckibben	CPPclang++18.1.3	Success	19,093
Jan 15, 2025 23:56	Ian Mckibben	CPPg++13.2.0	Success	12,204+1.01 RP
Jan 15, 2025 23:55	Ian Mckibben	CPPg++13.2.0	Success	14,120
Jan 15, 2025 23:53	Ian Mckibben	CPPg++13.2.0	Success	12,219+35.68 RP
Jan 15, 2025 23:43	Ian Mckibben	CPPclang++18.1.3	Success	19,105
Jan 15, 2025 23:41	Ian Mckibben	CPPclang++18.1.3	Success	12,865
Jan 15, 2025 23:25	Ian Mckibben	CPPclang++18.1.3	Success	13,412
Jan 15, 2025 23:18	Ian Mckibben	CPPclang++18.1.3	Success	13,302
Jan 15, 2025 23:16	Ian Mckibben	CPPclang++18.1.3	Success	57,275
Jan 15, 2025 22:46	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 22:46	Ian Mckibben	CPPclang++18.1.3	Success	54,206
Jan 15, 2025 20:23	Ian Mckibben	CPPclang++18.1.3	Success	167,460
Jan 15, 2025 20:23	Ian Mckibben	CPPclang++18.1.3	Success	167,511
Jan 15, 2025 20:21	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 20:19	Ian Mckibben	CPPclang++18.1.3	Success	57,313
Jan 15, 2025 20:19	Ian Mckibben	CPPclang++18.1.3	Success	57,240
Jan 15, 2025 20:14	Ian Mckibben	CPPclang++18.1.3	Success	84,208
Jan 15, 2025 20:13	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 20:09	Ian Mckibben	CPPclang++18.1.3	Success	12,776+436.39 RP
Jan 15, 2025 20:01	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 19:37	Ian Mckibben	CPPclang++18.1.3	Success	28,874+140.89 RP
Jan 15, 2025 07:41	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 07:40	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 07:39	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 07:36	Ian Mckibben	CPPclang++18.1.3	Error
Jan 15, 2025 07:28	Ian Mckibben	CPPclang++18.1.3	Success	274,977

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