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
Mar 28, 2026 09:58	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 08:57	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 08:24	Dominique Garmier	ZIG0.13.0	Success	12,302
Mar 28, 2026 07:24	Dominique Garmier	CPPg++13.3.0	Success	15,375
Mar 28, 2026 05:59	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 05:29	Dominique Garmier	CPPg++13.3.0	Success	10,970
Mar 28, 2026 05:28	Dominique Garmier	CPPg++13.3.0	Success	13,177
Mar 28, 2026 04:16	Dominique Garmier	CPPg++13.3.0	Success	9,533
Mar 28, 2026 04:10	Dominique Garmier	CPPclang++18.1.3	Success	10,775
Mar 28, 2026 03:42	Dominique Garmier	CPPg++13.3.0	Success	22,537
Mar 28, 2026 03:41	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 03:22	Dominique Garmier	CPPg++13.3.0	Success	10,090
Mar 28, 2026 03:19	Dominique Garmier	CPPg++13.3.0	Success	9,465
Mar 28, 2026 01:29	Dominique Garmier	CPPg++13.3.0	Success	9,506
Mar 28, 2026 01:28	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 01:27	Dominique Garmier	CPPg++13.3.0	Error
Mar 28, 2026 00:26	Dominique Garmier	RUSTrust-1.94.1	Success	169,633
Mar 28, 2026 00:25	Dominique Garmier	RUSTrust-1.94.1	Success	169,434
Mar 28, 2026 00:23	Dominique Garmier	RUSTrust-1.94.1	Error
Mar 27, 2026 22:27	Dominique Garmier	RUSTrust-1.94.1	Success	96,772
Mar 27, 2026 21:19	Dominique Garmier	CPPg++13.3.0	Success	13,285
Mar 27, 2026 21:17	Dominique Garmier	CPPg++13.3.0	Success	17,801
Mar 27, 2026 17:08	Dominique Garmier	RUSTrust-1.94.0	Success	9,482
Mar 27, 2026 17:08	Dominique Garmier	RUSTrust-1.94.0	Success	12,653
Mar 27, 2026 17:07	Dominique Garmier	RUSTrust-1.94.0	Success	121,997
Mar 27, 2026 16:49	Dominique Garmier	RUSTrust-1.94.1	Success	168,152
Mar 27, 2026 16:45	Dominique Garmier	RUSTrust-1.94.1	Success	95,100
Mar 27, 2026 16:44	Dominique Garmier	RUSTrust-1.94.1	Error
Mar 27, 2026 16:39	Dominique Garmier	ZIG0.13.0	Success	9,545
Mar 27, 2026 16:38	Dominique Garmier	ZIG0.13.0	Success	18,040
Mar 27, 2026 16:09	olliecrow	CPPclang++18.1.3	Success	18,374
Mar 27, 2026 14:50	Dominique Garmier	GOgo1.26.1	Success	18,016
Mar 27, 2026 14:36	Dominique Garmier	RUSTrust-1.94.1	Success	165,339
Mar 27, 2026 14:31	Dominique Garmier	ZIG0.13.0	Success	12,292
Mar 27, 2026 13:40	Dominique Garmier	CPPg++13.3.0	Success	9,414
Mar 27, 2026 13:40	Dominique Garmier	CPPg++13.3.0	Success	10,167
Mar 27, 2026 13:36	Dominique Garmier	CPPg++13.3.0	Success	11,375
Mar 27, 2026 13:34	Dominique Garmier	CPPg++13.3.0	Error
Mar 27, 2026 13:17	Dominique Garmier	RUSTrust-1.94.0	Success	131,753
Mar 27, 2026 13:16	Dominique Garmier	RUSTrust-1.94.0	Success	165,714
Mar 27, 2026 13:15	Dominique Garmier	RUSTrust-1.94.0	Success	123,090
Mar 27, 2026 13:07	Dominique Garmier	ZIG0.13.0	Success	35,315
Mar 27, 2026 12:42	Dominique Garmier	ZIG0.13.0	Success	26,649
Mar 27, 2026 12:39	Dominique Garmier	ZIG0.13.0	Success	11,007
Mar 27, 2026 12:36	Dominique Garmier	ZIG0.13.0	Error
Mar 27, 2026 12:23	Dominique Garmier	RUSTrust-1.94.1	Success	258,055
Mar 27, 2026 11:19	Dominique Garmier	CPPg++13.3.0	Success	11,233
Mar 27, 2026 08:25	Dominique Garmier	RUSTrust-1.94.1	Success	12,279
Mar 27, 2026 08:16	Dominique Garmier	RUSTrust-1.94.1	Success	10,898
Mar 27, 2026 07:53	Dominique Garmier	CPPg++13.3.0	Error
Mar 27, 2026 07:41	Dominique Garmier	CPPg++13.3.0	Success	77,790
Mar 27, 2026 07:35	Dominique Garmier	CPPg++13.3.0	Success	9,510
Mar 27, 2026 07:31	Dominique Garmier	CPPg++13.3.0	Success	11,210
Mar 27, 2026 02:45	Dominique Garmier	RUSTrust-1.94.1	Success	122,513
Mar 27, 2026 02:16	Dominique Garmier	CPPclang++	Success	12,534
Mar 27, 2026 02:14	Dominique Garmier	CPPg++10.5.0	Error
Mar 27, 2026 02:05	Dominique Garmier	CPPg++10.5.0	Success	12,452
Mar 27, 2026 01:58	Dominique Garmier	CPPg++10.5.0	Success	12,465
Mar 27, 2026 01:42	Dominique Garmier	CPPg++13.3.0	Success	28,141
Mar 26, 2026 23:13	Dominique Garmier	CPPclang++18.1.3	Success	9,644
Mar 26, 2026 23:11	Dominique Garmier	RUSTrust-1.94.1	Success	136,921
Mar 26, 2026 23:07	Dominique Garmier	RUSTrust-1.94.1	Success	160,783
Mar 26, 2026 23:03	Dominique Garmier	RUSTrust-1.94.1	Success	213,364
Mar 26, 2026 22:52	Dominique Garmier	RUSTrust-1.94.1	Error
Mar 26, 2026 22:21	Dominique Garmier	RUSTrust-1.94.0	Success	211,797
Mar 26, 2026 22:20	Dominique Garmier	RUSTrust-1.94.0	Success	211,844
Mar 26, 2026 22:19	Dominique Garmier	RUSTrust-1.94.1	Success	211,873
Mar 26, 2026 22:07	Dominique Garmier	RUSTrust-1.94.0	Success	9,409
Mar 26, 2026 22:02	Dominique Garmier	CPPg++13.3.0	Success	17,200
Mar 26, 2026 21:59	Dominique Garmier	CPPg++13.3.0	Success	10,218
Mar 26, 2026 21:58	Dominique Garmier	CPPg++13.3.0	Error
Mar 26, 2026 21:47	Dominique Garmier	CPPg++13.3.0	Success	9,408
Mar 26, 2026 21:44	Dominique Garmier	CPPg++13.3.0	Success	18,772
Mar 26, 2026 21:38	Dominique Garmier	CPPclang++18.1.3	Success	10,590
Mar 26, 2026 21:33	Dominique Garmier	CPPg++13.3.0	Success	10,030
Mar 26, 2026 21:27	Dominique Garmier	CPPg++13.3.0	Success	10,019
Mar 26, 2026 21:23	Dominique Garmier	CPPg++13.3.0	Success	9,385
Mar 26, 2026 21:20	Dominique Garmier	CPPg++13.3.0	Success	9,333+23.47 RP
Mar 26, 2026 21:07	Dominique Garmier	CPPg++13.3.0	Error
Mar 26, 2026 20:59	Dominique Garmier	RUSTrust-1.94.1	Success	209,943
Mar 26, 2026 19:52	Dominique Garmier	CPPg++10.5.0	Success	10,201
Mar 26, 2026 19:28	Dominique Garmier	CPPg++13.3.0	Success	10,090
Mar 26, 2026 19:16	Dominique Garmier	CPPclang++18.1.3	Success	10,123
Mar 26, 2026 18:55	Dominique Garmier	RUSTrust-1.94.1	Success	160,166
Mar 26, 2026 18:23	Arseniy Korobenko	CPPclang++18.1.3	Success	9,762+9.77 RP
Mar 26, 2026 18:20	Arseniy Korobenko	CPPclang++18.1.3	Success	9,856+0.82 RP
Mar 26, 2026 18:13	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 17:22	Arseniy Korobenko	CPPclang++18.1.3	Success	9,864+11.28 RP
Mar 26, 2026 16:54	Dominique Garmier	RUSTrust-1.94.1	Success	216,741
Mar 26, 2026 16:38	Dominique Garmier	RUSTrust-1.94.1	Success	212,965
Mar 26, 2026 14:47	Dominique Garmier	CPPclang++18.1.3	Success	10,828
Mar 26, 2026 14:45	Dominique Garmier	CPPg++13.3.0	Success	10,372
Mar 26, 2026 14:44	Dominique Garmier	CPPclang++18.1.3	Success	10,860
Mar 26, 2026 14:34	Arseniy Korobenko	CPPclang++18.1.3	Success	9,975+6.59 RP
Mar 26, 2026 14:32	Arseniy Korobenko	CPPclang++18.1.3	Success	10,068
Mar 26, 2026 14:31	Arseniy Korobenko	CPPclang++18.1.3	Success	11,627
Mar 26, 2026 14:25	Arseniy Korobenko	CPPclang++18.1.3	Success	10,041+259.59 RP
Mar 26, 2026 14:04	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 14:03	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 14:01	Arseniy Korobenko	CPPclang++18.1.3	Error

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