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, 2026 07:46	A_Shaman	CPPg++10.5.0	Error
Jun 19, 2026 17:44	Victor Mercklé	CPPg++14.2.0	Success	3,464
Jun 19, 2026 17:39	Victor Mercklé	CPPg++14.2.0	Success	3,434
Jun 19, 2026 17:34	Victor Mercklé	CPPg++14.2.0	Success	3,392
Jun 19, 2026 17:28	Victor Mercklé	CPPg++14.2.0	Success	3,379
Jun 19, 2026 17:23	Victor Mercklé	CPPg++14.2.0	Success	3,362
Jun 18, 2026 16:03	Maya Rebholz	CPPg++10.5.0	Success	11,211
Jun 18, 2026 15:57	Maya Rebholz	CPPg++10.5.0	Success	10,397
Jun 18, 2026 15:44	Maya Rebholz	CPPg++10.5.0	Success	10,195
Jun 18, 2026 15:32	Maya Rebholz	CPPg++10.5.0	Success	13,873
Jun 18, 2026 15:18	Maya Rebholz	CPPg++10.5.0	Success	14,964
Jun 17, 2026 19:03	Maya Rebholz	CPPg++10.5.0	Success	10,259
Jun 17, 2026 18:33	Maya Rebholz	CPPg++10.5.0	Success	11,608
Jun 17, 2026 16:40	Maya Rebholz	CPPg++10.5.0	Success	9,779
Jun 17, 2026 16:35	Maya Rebholz	CPPg++10.5.0	Success	13,690
Jun 17, 2026 16:16	Maya Rebholz	CPPg++10.5.0	Success	11,291
Jun 17, 2026 16:14	Maya Rebholz	CPPg++10.5.0	Error
Jun 17, 2026 15:39	Maya Rebholz	CPPg++10.5.0	Success	9,705
Jun 17, 2026 15:27	Maya Rebholz	CPPg++10.5.0	Success	9,705
Jun 17, 2026 15:23	Maya Rebholz	CPPg++10.5.0	Success	10,418
Jun 17, 2026 15:17	Maya Rebholz	CPPg++10.5.0	Success	9,699+183.29 RP
Jun 17, 2026 15:07	Maya Rebholz	CPPg++10.5.0	Success	12,017
Jun 17, 2026 15:05	Maya Rebholz	CPPg++10.5.0	Success	11,796+33.61 RP
Jun 17, 2026 15:02	Maya Rebholz	CPPg++10.5.0	Success	12,283+28.09 RP
Jun 17, 2026 14:56	Maya Rebholz	CPPg++10.5.0	Success	12,722+407.34 RP
Jun 16, 2026 20:19	Maya Rebholz	CPPg++10.5.0	Success	48,868
Jun 16, 2026 20:14	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:33	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:32	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:30	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:29	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:28	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:26	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:20	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:17	Maya Rebholz	CPPg++10.5.0	Success	34,489
Jun 16, 2026 19:03	Maya Rebholz	CPPg++10.5.0	Success	37,326
Jun 16, 2026 19:02	Maya Rebholz	CPPg++10.5.0	Success	46,514
Jun 16, 2026 18:56	Maya Rebholz	CPPg++10.5.0	Success	45,139
Jun 16, 2026 18:54	Maya Rebholz	CPPg++10.5.0	Success	103,031
Jun 16, 2026 18:38	Maya Rebholz	CPPg++10.5.0	Success	26,406+1.64 RP
Jun 16, 2026 16:11	Maya Rebholz	CPPg++10.5.0	Success	26,521+59.30 RP
Jun 16, 2026 16:10	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 15:59	Maya Rebholz	CPPg++10.5.0	Success	31,485
Jun 16, 2026 15:58	Maya Rebholz	CPPg++10.5.0	Success	31,706
Jun 16, 2026 15:55	Maya Rebholz	CPPg++10.5.0	Success	31,470+1.13 RP
Jun 16, 2026 15:54	Maya Rebholz	CPPg++10.5.0	Success	31,582+9.59 RP
Jun 16, 2026 15:50	Maya Rebholz	CPPg++10.5.0	Success	34,269
Jun 16, 2026 15:49	Maya Rebholz	CPPg++10.5.0	Success	38,518
Jun 16, 2026 15:47	Maya Rebholz	CPPg++10.5.0	Success	44,325
Jun 16, 2026 15:44	Maya Rebholz	CPPg++10.5.0	Success	32,568+85.52 RP
Jun 16, 2026 15:43	Maya Rebholz	CPPg++10.5.0	Success	45,140+146.38 RP
Jun 16, 2026 15:36	Maya Rebholz	CPPg++10.5.0	Success	133,055+65.20 RP
Jun 16, 2026 15:30	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 15:30	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 13:49	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 13:48	Maya Rebholz	CPPg++10.5.0	Success	1,004,243+9.96 RP
Jun 12, 2026 12:44	Victor Mercklé	CSHARP10.0.7	Success	3,534+19.88 RP
Jun 12, 2026 12:33	Victor Mercklé	CSHARP10.0.7	Success	3,559+7.87 RP
Jun 12, 2026 11:56	Victor Mercklé	CPPg++14.2.0	Success	3,433
Jun 12, 2026 11:51	Victor Mercklé	CSHARP10.0.7	Success	3,569+44.81 RP
Jun 12, 2026 11:46	Victor Mercklé	CPPg++14.2.0	Success	3,378
Jun 12, 2026 11:40	Victor Mercklé	CPPg++14.2.0	Success	3,376
Jun 12, 2026 11:33	Victor Mercklé	CPPg++14.2.0	Success	3,416
Jun 12, 2026 11:28	Victor Mercklé	CPPg++14.2.0	Success	3,642
Jun 12, 2026 11:25	Victor Mercklé	CPPg++14.2.0	Success	3,393
Jun 12, 2026 11:18	Victor Mercklé	CPPg++14.2.0	Success	3,351+15.94 RP
Jun 12, 2026 11:13	Victor Mercklé	CPPg++14.2.0	Success	3,428
Jun 12, 2026 11:08	Victor Mercklé	CPPg++14.2.0	Success	3,407
Jun 12, 2026 11:03	Victor Mercklé	CPPg++14.2.0	Success	3,403
Jun 12, 2026 10:58	Victor Mercklé	CPPg++14.2.0	Success	3,385
Jun 12, 2026 10:53	Victor Mercklé	CPPg++14.2.0	Success	3,396
Jun 12, 2026 10:48	Victor Mercklé	CPPg++14.2.0	Success	3,390
Jun 12, 2026 10:43	Victor Mercklé	CPPg++14.2.0	Success	3,433
Jun 12, 2026 10:38	Victor Mercklé	CPPg++14.2.0	Success	3,377
Jun 12, 2026 10:30	Victor Mercklé	CPPg++14.2.0	Success	6,581
Jun 12, 2026 10:19	Victor Mercklé	CPPg++14.2.0	Success	3,431
Jun 12, 2026 10:14	Victor Mercklé	CPPg++14.2.0	Success	3,420
Jun 12, 2026 09:20	Victor Mercklé	ZIG0.16.0	Success	3,465
Jun 12, 2026 09:10	Victor Mercklé	ZIG0.16.0	Success	3,441
Jun 12, 2026 09:00	Victor Mercklé	ZIG0.16.0	Success	3,435
Jun 12, 2026 06:37	Victor Mercklé	RUSTrust-1.95.0	Success	3,369+21.86 RP
Jun 12, 2026 06:32	Victor Mercklé	RUSTrust-1.95.0	Success	3,424
Jun 12, 2026 06:16	Victor Mercklé	RUSTrust-1.95.0	Success	3,394+1.74 RP
Jun 11, 2026 05:40	Victor Mercklé	GOgo1.26.2	Success	3,625
Jun 11, 2026 05:31	Victor Mercklé	GOgo1.26.2	Success	3,526+4.02 RP
Jun 11, 2026 05:25	Victor Mercklé	GOgo1.26.2	Success	3,531+44.21 RP
Jun 11, 2026 05:20	Victor Mercklé	GOgo1.26.2	Success	3,587+243.96 RP
Jun 8, 2026 16:20	Victor Mercklé	CPPg++14.2.0	Success	6,529
Jun 8, 2026 16:15	Victor Mercklé	CPPg++14.2.0	Success	6,314
Jun 8, 2026 16:10	Victor Mercklé	CPPg++14.2.0	Success	6,321
Jun 8, 2026 15:58	Victor Mercklé	CPPg++14.2.0	Success	3,848
Jun 8, 2026 15:49	Victor Mercklé	CPPg++14.2.0	Success	3,430
Jun 7, 2026 16:12	Victor Mercklé	CPPg++14.2.0	Success	3,414
Jun 7, 2026 16:07	Victor Mercklé	CPPg++14.2.0	Success	3,396+2.60 RP
Jun 7, 2026 16:02	Victor Mercklé	CPPg++14.2.0	Success	3,476
Jun 7, 2026 15:48	Victor Mercklé	CPPg++14.2.0	Success	4,773
Jun 7, 2026 15:37	Victor Mercklé	CPPg++14.2.0	Success	5,112
Jun 6, 2026 01:30	Victor Mercklé	CPPg++14.2.0	Success	3,423
Jun 6, 2026 01:19	Victor Mercklé	CPPg++14.2.0	Success	3,431
Jun 6, 2026 01:13	Victor Mercklé	CPPg++14.2.0	Success	3,445

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