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 20, 2026 01:27	Dominique Garmier	CPPclang++18.1.3	Success	12,648+0.31 RP
Mar 20, 2026 01:22	Dominique Garmier	CPPg++13.3.0	Success	18,624
Mar 20, 2026 01:22	Dominique Garmier	CPPclang++18.1.3	Success	12,653+25.33 RP
Mar 20, 2026 00:47	Dominique Garmier	CPPclang++18.1.3	Success	41,005
Mar 20, 2026 00:08	olliecrow	RUSTrust-1.94.0	Success	19,780
Mar 19, 2026 23:47	olliecrow	CPPclang++18.1.3	Success	18,392
Mar 19, 2026 23:44	olliecrow	CPPclang++18.1.3	Success	18,625
Mar 19, 2026 23:37	olliecrow	CPPclang++18.1.3	Error
Mar 19, 2026 23:36	olliecrow	CPPclang++18.1.3	Success	3,419
Mar 19, 2026 23:08	olliecrow	CPPclang++18.1.3	Success	17,741
Mar 19, 2026 19:01	Dominique Garmier	CPPg++13.3.0	Success	19,112
Mar 19, 2026 19:00	Dominique Garmier	CPPg++13.3.0	Success	42,157
Mar 19, 2026 19:00	Dominique Garmier	CPPg++13.3.0	Success	42,130
Mar 19, 2026 14:38	Dominique Garmier	CPPg++13.3.0	Success	13,635
Mar 19, 2026 14:37	Dominique Garmier	CPPg++13.3.0	Success	23,109
Mar 19, 2026 14:37	Dominique Garmier	CPPg++13.3.0	Success	162,069
Mar 19, 2026 14:37	Dominique Garmier	CPPg++13.3.0	Success	13,143
Mar 19, 2026 13:47	Dominique Garmier	CPPg++13.3.0	Success	13,176
Mar 19, 2026 03:37	Dominique Garmier	CPPclang++18.1.3	Success	13,997
Mar 19, 2026 03:37	Dominique Garmier	CPPclang++18.1.3	Success	14,029
Mar 19, 2026 03:37	Dominique Garmier	CPPg++13.3.0	Success	13,170
Mar 19, 2026 01:17	Dominique Garmier	CPPclang++18.1.3	Success	18,885
Mar 19, 2026 01:16	Dominique Garmier	CPPg++13.3.0	Success	13,203
Mar 19, 2026 01:05	Dominique Garmier	CPPg++13.3.0	Success	20,173
Mar 19, 2026 00:21	Dominique Garmier	CPPg++13.3.0	Success	20,627
Mar 19, 2026 00:14	Dominique Garmier	CPPclang++18.1.3	Success	18,475
Mar 19, 2026 00:00	Dominique Garmier	CPPclang++18.1.3	Success	18,693
Mar 18, 2026 21:59	Dominique Garmier	CPPclang++18.1.3	Success	13,394
Mar 18, 2026 21:58	Dominique Garmier	CPPclang++18.1.3	Success	18,256
Mar 18, 2026 06:40	limanjun99	CPPg++13.3.0	Success	41,747
Mar 18, 2026 06:39	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 06:38	limanjun99	CPPg++13.3.0	Success	42,610
Mar 18, 2026 06:37	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 06:35	limanjun99	CPPg++13.3.0	Success	112,451
Mar 18, 2026 06:34	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 06:33	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 06:30	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 06:29	limanjun99	CPPg++13.3.0	Success	98,112
Mar 18, 2026 06:28	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:55	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:52	limanjun99	CPPg++13.3.0	Success	42,475
Mar 18, 2026 04:51	limanjun99	CPPg++13.3.0	Success	41,844
Mar 18, 2026 04:50	limanjun99	CPPg++13.3.0	Success	41,820
Mar 18, 2026 04:48	limanjun99	CPPg++13.3.0	Success	119,739
Mar 18, 2026 04:47	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:46	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:45	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:41	limanjun99	CPPg++13.3.0	Success	109,750
Mar 18, 2026 04:41	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:39	limanjun99	CPPg++13.3.0	Success	95,823
Mar 18, 2026 04:38	limanjun99	CPPg++13.3.0	Success	104,410
Mar 18, 2026 04:37	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:37	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:36	limanjun99	CPPg++13.3.0	Success	91,702
Mar 18, 2026 04:35	limanjun99	CPPg++13.3.0	Success	103,045
Mar 18, 2026 04:34	limanjun99	CPPg++13.3.0	Success	108,757
Mar 18, 2026 04:33	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:10	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:00	limanjun99	CPPg++13.3.0	Success	119,090
Mar 18, 2026 03:58	limanjun99	CPPg++13.3.0	Success	108,052
Mar 17, 2026 18:09	T Pratham	CPPg++13.3.0	Success	11,685+505.89 RP
Mar 17, 2026 17:52	T Pratham	CPPg++13.3.0	Success	43,130
Mar 17, 2026 17:42	T Pratham	CPPg++13.3.0	Success	42,496
Mar 17, 2026 17:38	T Pratham	CPPg++13.3.0	Success	28,579+257.38 RP
Mar 17, 2026 16:53	T Pratham	CPPg++13.3.0	Success	108,072+92.53 RP
Mar 17, 2026 16:50	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 16:45	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 16:40	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 14:29	limanjun99	CPPg++13.3.0	Success	41,104+0.06 RP
Mar 17, 2026 14:26	limanjun99	CPPg++13.3.0	Success	41,114+3.92 RP
Mar 17, 2026 14:25	limanjun99	CPPg++13.3.0	Success	41,788+129.31 RP
Mar 17, 2026 14:22	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:21	Dominique Garmier	CPPg++13.3.0	Success	18,754
Mar 17, 2026 14:19	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:15	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:14	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:13	limanjun99	CPPg++13.3.0	Success	121,271
Mar 17, 2026 14:12	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:11	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:11	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:06	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:03	limanjun99	CPPg++13.3.0	Success	103,721
Mar 17, 2026 14:02	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:01	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:01	limanjun99	CPPg++13.3.0	Success	103,357
Mar 17, 2026 14:00	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:59	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:57	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:56	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:53	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:48	limanjun99	CPPg++13.3.0	Success	90,917+23.78 RP
Mar 17, 2026 13:38	limanjun99	CPPg++13.3.0	Success	115,996+75.84 RP
Mar 17, 2026 10:56	limanjun99	CPPg++13.3.0	Success	964,669+10.37 RP
Mar 16, 2026 20:06	T Pratham	CPPg++13.3.0	Error
Mar 16, 2026 19:53	T Pratham	CPPg++13.3.0	Error
Mar 16, 2026 11:39	Dominique Garmier	CPPclang++18.1.3	Success	56,069
Mar 16, 2026 11:06	Dominique Garmier	CPPclang++18.1.3	Success	138,122
Mar 15, 2026 10:54	Dominique Garmier	CPPg++13.3.0	Success	13,626
Mar 14, 2026 21:53	Elijah Kin	CPPclang++18.1.3	Success	142,964
Mar 14, 2026 21:52	Elijah Kin	CPPclang++18.1.3	Success	77,741

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