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
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
Apr 22, 2025 10:14	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 21:00	Chandrasekaran Akash	CPPclang++18.1.3	Error
Apr 9, 2025 21:00	Chandrasekaran Akash	CPPclang++18.1.3	Success	975,460+10.25 RP
Apr 9, 2025 17:39	NoSIMD_C#	CSHARP9.0.4	Error
Apr 9, 2025 08:10	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 07:28	NoSIMD_C#	CSHARP9.0.3	Success	183,618+13.52 RP
Apr 9, 2025 07:25	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 06:52	NoSIMD_C#	CSHARP9.0.3	Success	209,650+15.38 RP
Apr 9, 2025 06:11	NoSIMD_C#	CSHARP9.0.3	Success	280,490
Apr 9, 2025 05:36	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 05:34	NoSIMD_C#	CSHARP9.0.3	Success	252,016
Apr 9, 2025 05:33	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 05:22	NoSIMD_C#	CSHARP9.0.3	Error
Apr 9, 2025 05:19	NoSIMD_C#	CSHARP9.0.3	Success	256,231
Apr 8, 2025 14:54	NoSIMD_C#	CSHARP9.0.3	Error
Apr 8, 2025 14:52	NoSIMD_C#	CSHARP9.0.3	Error
Apr 8, 2025 14:49	NoSIMD_C#	CSHARP9.0.3	Error
Apr 8, 2025 07:19	NoSIMD_C#	CPPg++13.2.0	Success	949,833
Apr 4, 2025 17:34	NoSIMD_C#	CSHARP9.0.3	Error
Apr 4, 2025 17:28	NoSIMD_C#	CSHARP9.0.3	Success	275,718
Apr 4, 2025 16:54	NoSIMD_C#	CSHARP9.0.3	Success	252,348
Apr 4, 2025 16:17	NoSIMD_C#	CSHARP9.0.3	Success	277,232
Apr 4, 2025 15:43	NoSIMD_C#	CSHARP9.0.3	Success	249,967+6.12 RP
Apr 4, 2025 15:23	NoSIMD_C#	CSHARP9.0.3	Success	323,058
Apr 4, 2025 15:03	NoSIMD_C#	CSHARP9.0.3	Error
Apr 4, 2025 14:58	NoSIMD_C#	CSHARP9.0.3	Error
Apr 4, 2025 14:39	NoSIMD_C#	CSHARP9.0.3	Success	331,287
Apr 4, 2025 14:37	NoSIMD_C#	CSHARP9.0.3	Error
Apr 4, 2025 14:30	NoSIMD_C#	CSHARP9.0.3	Success	351,559
Apr 4, 2025 14:29	NoSIMD_C#	CSHARP9.0.3	Success	358,014
Apr 4, 2025 14:27	NoSIMD_C#	CSHARP9.0.3	Success	312,410
Apr 4, 2025 14:26	NoSIMD_C#	CSHARP9.0.3	Success	324,068
Apr 4, 2025 14:25	NoSIMD_C#	CSHARP9.0.3	Success	311,760
Apr 4, 2025 14:20	NoSIMD_C#	CSHARP9.0.3	Success	304,940
Apr 4, 2025 14:15	NoSIMD_C#	CSHARP9.0.3	Success	270,670+7.78 RP
Apr 4, 2025 13:44	NoSIMD_C#	CSHARP9.0.3	Success	302,478+32.72 RP
Apr 4, 2025 13:17	NoSIMD_C#	CSHARP9.0.3	Error
Apr 4, 2025 13:13	NoSIMD_C#	CSHARP9.0.3	Success	598,913+16.74 RP
Apr 4, 2025 13:11	NoSIMD_C#	CSHARP9.0.3	Success	1,897,400
Apr 4, 2025 12:59	NoSIMD_C#	CSHARP9.0.3	Error
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

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