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
Mar 24, 2026 12:12	Dominique Garmier	CPPclang++18.1.3	Error
Mar 24, 2026 12:07	Dominique Garmier	CPPg++13.3.0	Success	95,128
Mar 24, 2026 12:07	Dominique Garmier	CPPclang++18.1.3	Success	10,410
Mar 24, 2026 12:07	Dominique Garmier	CPPclang++18.1.3	Success	11,110
Mar 24, 2026 11:37	Dominique Garmier	CPPg++13.3.0	Success	13,025
Mar 24, 2026 11:34	Dominique Garmier	CPPg++13.3.0	Success	22,446
Mar 24, 2026 10:53	Dominique Garmier	GOgo1.26.1	Success	16,016
Mar 24, 2026 10:38	Dominique Garmier	GOgo1.26.1	Success	14,819+5.42 RP
Mar 24, 2026 10:26	Dominique Garmier	RUSTrust-1.94.0	Success	10,063
Mar 24, 2026 10:13	Dominique Garmier	CPPg++13.3.0	Error
Mar 24, 2026 09:42	Dominique Garmier	CPPclang++18.1.3	Success	10,376
Mar 24, 2026 09:40	Dominique Garmier	CPPg++13.3.0	Success	13,220
Mar 24, 2026 09:40	Dominique Garmier	CPPg++13.3.0	Success	99,601
Mar 24, 2026 09:09	Dominique Garmier	GOgo1.26.1	Success	15,750
Mar 24, 2026 08:59	Dominique Garmier	RUSTrust-1.82.0	Success	10,093
Mar 24, 2026 08:25	Dominique Garmier	RUSTrust-1.94.0	Success	158,377
Mar 24, 2026 08:11	Dominique Garmier	CPPg++13.3.0	Success	16,769
Mar 24, 2026 08:11	Dominique Garmier	CPPg++13.3.0	Success	27,260
Mar 24, 2026 08:11	Dominique Garmier	CPPclang++18.1.3	Success	12,782
Mar 24, 2026 07:32	Dominique Garmier	CPPg++13.3.0	Success	10,484
Mar 24, 2026 07:31	Dominique Garmier	CPPg++13.3.0	Error
Mar 24, 2026 07:30	Dominique Garmier	CPPclang++18.1.3	Success	20,018
Mar 24, 2026 07:28	Dominique Garmier	CPPclang++18.1.3	Success	10,483
Mar 24, 2026 07:27	Dominique Garmier	CPPclang++18.1.3	Success	103,710
Mar 24, 2026 07:26	Dominique Garmier	CPPclang++18.1.3	Success	10,366
Mar 24, 2026 07:08	Dominique Garmier	CPPclang++18.1.3	Success	10,373
Mar 24, 2026 06:33	Dominique Garmier	RUSTrust-1.94.0	Success	10,506
Mar 24, 2026 06:07	Dominique Garmier	CPPg++13.3.0	Success	10,461
Mar 24, 2026 06:06	Dominique Garmier	CPPg++13.3.0	Success	10,337
Mar 24, 2026 06:05	Dominique Garmier	CPPg++13.3.0	Success	16,836
Mar 24, 2026 05:34	Dominique Garmier	CPPg++13.3.0	Success	14,468
Mar 24, 2026 05:31	Dominique Garmier	CPPg++13.3.0	Error
Mar 24, 2026 05:29	Dominique Garmier	CPPg++13.3.0	Success	18,788
Mar 24, 2026 05:27	Dominique Garmier	CPPclang++18.1.3	Success	10,003
Mar 24, 2026 05:27	Dominique Garmier	CPPg++13.3.0	Success	9,866
Mar 24, 2026 05:25	Dominique Garmier	CPPg++13.3.0	Success	19,043
Mar 24, 2026 05:24	Dominique Garmier	CPPg++13.3.0	Success	18,051
Mar 24, 2026 04:27	Dominique Garmier	GOgo1.26.1	Success	20,155
Mar 24, 2026 04:23	Dominique Garmier	RUSTrust-1.94.0	Success	10,536
Mar 24, 2026 04:23	Dominique Garmier	RUSTrust-1.94.0	Success	191,566
Mar 24, 2026 04:08	Dominique Garmier	CPPg++13.3.0	Success	10,108
Mar 24, 2026 04:06	Dominique Garmier	CPPg++13.3.0	Success	16,475
Mar 24, 2026 04:03	Dominique Garmier	CPPclang++18.1.3	Success	12,471
Mar 24, 2026 03:34	Dominique Garmier	CPPg++13.3.0	Success	89,065
Mar 24, 2026 03:33	Dominique Garmier	CPPg++13.3.0	Success	9,706
Mar 24, 2026 03:32	Dominique Garmier	CPPg++13.3.0	Success	9,694
Mar 24, 2026 03:31	Dominique Garmier	CPPg++13.3.0	Success	10,235
Mar 24, 2026 03:27	Dominique Garmier	CPPg++13.3.0	Success	10,302
Mar 24, 2026 02:26	Dominique Garmier	GOgo1.26.1	Success	17,083
Mar 24, 2026 02:25	Dominique Garmier	GOgo1.26.1	Success	22,032
Mar 24, 2026 02:12	Dominique Garmier	CPPg++13.3.0	Success	21,393
Mar 24, 2026 01:47	Dominique Garmier	CPPg++13.3.0	Success	27,793
Mar 24, 2026 01:01	olliecrow	RUSTrust-1.94.0	Success	3,537
Mar 24, 2026 00:18	Dominique Garmier	CPPg++13.3.0	Success	12,567
Mar 23, 2026 23:24	Dominique Garmier	CPPclang++18.1.3	Success	13,584
Mar 23, 2026 23:24	Dominique Garmier	CPPg++13.3.0	Success	13,656
Mar 23, 2026 21:44	izotoff	GOgo1.26.1	Success	24,823
Mar 23, 2026 21:40	Dominique Garmier	CPPg++13.3.0	Success	11,216
Mar 23, 2026 21:22	izotoff	GOgo1.23.3	Success	24,965
Mar 23, 2026 21:21	izotoff	GOgo1.25.4	Success	24,665
Mar 23, 2026 20:37	Dominique Garmier	CPPg++13.3.0	Success	9,547
Mar 23, 2026 20:33	Dominique Garmier	CPPg++13.3.0	Success	10,257
Mar 23, 2026 19:45	Dominique Garmier	CPPg++10.5.0	Success	9,543
Mar 23, 2026 19:44	Dominique Garmier	CPPg++10.5.0	Success	12,576
Mar 23, 2026 18:38	izotoff	GOgo1.25.4	Error
Mar 23, 2026 18:37	izotoff	GOgo1.25.4	Success	24,611
Mar 23, 2026 17:37	Dominique Garmier	CPPg++13.3.0	Success	17,101
Mar 23, 2026 17:03	Dominique Garmier	CPPg++13.3.0	Success	14,959
Mar 23, 2026 17:01	Dominique Garmier	CPPg++13.3.0	Success	9,542+22.57 RP
Mar 23, 2026 16:59	Dominique Garmier	CPPg++13.3.0	Success	9,752+0.84 RP
Mar 23, 2026 16:43	Dominique Garmier	CPPg++13.3.0	Success	9,760+34.10 RP
Mar 23, 2026 16:28	Dominique Garmier	CPPg++13.3.0	Success	19,046
Mar 23, 2026 16:25	Dominique Garmier	CPPg++13.3.0	Success	13,887
Mar 23, 2026 16:24	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 16:23	Dominique Garmier	CPPg++13.3.0	Success	11,849
Mar 23, 2026 16:05	Dominique Garmier	CPPg++13.3.0	Success	10,167
Mar 23, 2026 16:02	Dominique Garmier	CPPg++13.3.0	Success	19,020
Mar 23, 2026 15:16	Dominique Garmier	CPPg++13.3.0	Success	10,134
Mar 23, 2026 15:13	Dominique Garmier	CPPg++13.3.0	Success	15,037
Mar 23, 2026 15:12	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 15:10	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 15:09	Dominique Garmier	CPPclang++18.1.3	Success	10,216
Mar 23, 2026 15:05	Dominique Garmier	CPPg++13.3.0	Success	11,955
Mar 23, 2026 14:47	Dominique Garmier	CPPclang++18.1.3	Success	10,113
Mar 23, 2026 14:44	Dominique Garmier	GOgo1.26.1	Success	14,939+114.33 RP
Mar 23, 2026 14:38	Dominique Garmier	CPPg++13.3.0	Success	10,097
Mar 23, 2026 14:31	Dominique Garmier	CPPg++13.3.0	Success	12,552
Mar 23, 2026 14:26	Dominique Garmier	CPPg++13.3.0	Success	10,096+3.32 RP
Mar 23, 2026 14:23	Dominique Garmier	CPPg++13.3.0	Success	13,173
Mar 23, 2026 14:23	Dominique Garmier	CPPg++13.3.0	Success	13,086
Mar 23, 2026 13:05	Dominique Garmier	CPPg++13.3.0	Success	18,707
Mar 23, 2026 13:02	Dominique Garmier	CPPg++13.3.0	Success	22,673
Mar 23, 2026 12:12	Dominique Garmier	CPPg++13.3.0	Success	36,338
Mar 23, 2026 11:27	Dominique Garmier	CPPg++13.3.0	Success	10,512
Mar 23, 2026 11:24	Dominique Garmier	CPPg++13.3.0	Success	36,790
Mar 23, 2026 11:23	Dominique Garmier	CPPg++13.3.0	Success	10,130+23.59 RP
Mar 23, 2026 11:21	Dominique Garmier	CPPg++13.3.0	Success	11,589
Mar 23, 2026 10:36	Dominique Garmier	CPPg++13.3.0	Success	17,478
Mar 23, 2026 10:34	Dominique Garmier	CPPg++13.3.0	Success	16,385
Mar 23, 2026 07:22	Dominique Garmier	CPPg++13.3.0	Success	10,378+3.33 RP

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