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
Aug 19, 2026 15:09	Victor Mercklé	CPPg++14.2.0	Success	5,405
Aug 19, 2026 14:59	Victor Mercklé	CPPg++14.2.0	Success	5,433
Aug 19, 2026 14:55	Victor Mercklé	CPPg++14.2.0	Success	2,790+15.35 RP
Aug 19, 2026 14:53	Victor Mercklé	CPPg++14.2.0	Success	2,802+8.89 RP
Aug 19, 2026 14:51	Victor Mercklé	CPPg++14.2.0	Success	5,531
Aug 19, 2026 14:50	Victor Mercklé	CPPg++14.2.0	Success	5,379
Aug 19, 2026 14:48	Victor Mercklé	CPPg++14.2.0	Success	5,490
Aug 19, 2026 14:46	Victor Mercklé	CPPg++14.2.0	Success	2,853
Aug 19, 2026 14:44	Victor Mercklé	CPPg++14.2.0	Success	2,817
Aug 19, 2026 14:41	Victor Mercklé	CPPg++14.2.0	Success	5,506
Aug 19, 2026 14:38	Victor Mercklé	CPPg++14.2.0	Success	2,867
Aug 19, 2026 14:37	Victor Mercklé	CPPg++14.2.0	Success	2,809+61.04 RP
Aug 19, 2026 14:30	Victor Mercklé	CPPg++14.2.0	Success	2,938
Aug 19, 2026 14:28	Victor Mercklé	CPPg++14.2.0	Success	2,913
Aug 19, 2026 14:22	Victor Mercklé	CPPg++14.2.0	Success	2,871
Aug 19, 2026 14:20	Victor Mercklé	CPPg++14.2.0	Success	2,866
Aug 19, 2026 14:08	Victor Mercklé	CPPg++14.2.0	Success	5,523
Aug 19, 2026 14:06	Victor Mercklé	CPPg++14.2.0	Success	2,939
Aug 19, 2026 13:45	Victor Mercklé	CPPg++14.2.0	Success	5,467
Aug 19, 2026 13:43	Victor Mercklé	CPPg++14.2.0	Success	5,518
Aug 19, 2026 13:30	Victor Mercklé	CPPg++14.2.0	Success	2,916
Aug 19, 2026 13:24	Victor Mercklé	CPPg++14.2.0	Success	2,996
Aug 19, 2026 13:17	Victor Mercklé	CPPg++14.2.0	Success	2,929
Aug 19, 2026 13:16	Victor Mercklé	CPPg++14.2.0	Success	5,443
Aug 19, 2026 13:09	Victor Mercklé	CPPg++14.2.0	Success	2,953
Aug 19, 2026 13:06	Victor Mercklé	CPPg++14.2.0	Success	5,491
Aug 19, 2026 13:03	Victor Mercklé	CPPg++14.2.0	Success	2,904
Aug 19, 2026 13:01	Victor Mercklé	CPPg++14.2.0	Success	5,487
Aug 19, 2026 10:10	Victor Mercklé	CPPg++14.2.0	Success	5,448
Aug 19, 2026 10:04	Victor Mercklé	CPPg++14.2.0	Success	5,506
Aug 19, 2026 10:01	Victor Mercklé	CPPg++14.2.0	Success	3,013
Aug 19, 2026 10:00	Victor Mercklé	CPPg++14.2.0	Success	2,891
Aug 19, 2026 09:56	Victor Mercklé	CPPg++14.2.0	Success	3,035
Aug 19, 2026 09:50	Victor Mercklé	CPPg++14.2.0	Success	5,457
Aug 19, 2026 09:47	Victor Mercklé	CPPg++14.2.0	Success	5,431
Aug 19, 2026 09:40	Victor Mercklé	CPPg++14.2.0	Success	5,609
Aug 19, 2026 09:37	Victor Mercklé	CPPg++14.2.0	Success	2,971
Aug 19, 2026 09:14	Victor Mercklé	CPPg++14.2.0	Success	2,919
Aug 19, 2026 09:07	Victor Mercklé	CPPg++14.2.0	Success	21,900
Aug 19, 2026 09:03	Victor Mercklé	CPPg++14.2.0	Success	2,910
Aug 19, 2026 08:56	Victor Mercklé	CPPg++14.2.0	Success	2,954
Aug 19, 2026 08:52	Victor Mercklé	CPPg++14.2.0	Success	5,415
Aug 19, 2026 08:48	Victor Mercklé	CPPg++14.2.0	Success	3,123
Aug 19, 2026 08:45	Victor Mercklé	CPPg++14.2.0	Success	3,006
Aug 19, 2026 08:39	Victor Mercklé	CPPg++14.2.0	Success	5,498
Aug 19, 2026 08:38	Victor Mercklé	CPPg++14.2.0	Success	2,941
Aug 18, 2026 15:28	Victor Mercklé	CPPg++14.2.0	Success	5,879
Aug 18, 2026 15:25	Victor Mercklé	CPPg++14.2.0	Success	10,527
Aug 18, 2026 15:15	Victor Mercklé	CPPg++14.2.0	Success	3,044
Aug 18, 2026 15:07	Victor Mercklé	CPPg++14.2.0	Success	2,858+23.11 RP
Aug 18, 2026 14:55	Victor Mercklé	CPPg++14.2.0	Success	11,647
Aug 18, 2026 14:22	Victor Mercklé	GOgo1.26.2	Success	12,922
Aug 18, 2026 14:06	Victor Mercklé	GOgo1.26.2	Success	3,227
Aug 18, 2026 14:02	Victor Mercklé	GOgo1.26.2	Success	3,187
Aug 18, 2026 11:21	Josu San Martin	RUSTrust-1.95.0	Success	11,440
Aug 18, 2026 10:53	Josu San Martin	RUSTrust-1.95.0	Success	3,390
Aug 18, 2026 09:42	Josu San Martin	RUSTrust-1.95.0	Success	3,406
Aug 18, 2026 09:18	Josu San Martin	CPPclang++20.1.2	Success	3,822
Aug 18, 2026 09:00	Josu San Martin	CPPclang++20.1.2	Success	3,853
Aug 18, 2026 07:14	Josu San Martin	ZIG0.15.1	Success	8,056
Aug 18, 2026 07:11	Josu San Martin	GOgo1.26.2	Success	5,122
Aug 18, 2026 06:29	Josu San Martin	ZIG0.15.1	Error
Aug 18, 2026 06:28	Josu San Martin	GOgo1.26.2	Error
Aug 18, 2026 06:26	Josu San Martin	CPPg++13.3.0	Success	3,686
Aug 18, 2026 06:07	Josu San Martin	RUSTrust-1.95.0	Success	3,375+26.11 RP
Aug 18, 2026 06:03	Josu San Martin	ZIG0.15.1	Error
Aug 18, 2026 06:02	Josu San Martin	CSHARP10.0.7	Success	11,656
Aug 18, 2026 05:52	Josu San Martin	GOgo1.26.2	Error
Aug 18, 2026 05:49	Josu San Martin	CPPg++13.3.0	Error
Aug 17, 2026 11:49	Tomislav Tunkovic	GOgo1.26.2	Success	2,807+324.18 RP
Aug 17, 2026 10:55	Tomislav Tunkovic	CSHARP9.0.15	Success	2,971
Aug 17, 2026 10:33	Tomislav Tunkovic	CSHARP9.0.15	Success	2,968+181.51 RP
Aug 17, 2026 01:33	Victor Mercklé	CPPg++14.2.0	Success	29,636
Aug 16, 2026 23:11	Tomislav Tunkovic	GOgo1.26.2	Success	53,253
Aug 16, 2026 23:11	Tomislav Tunkovic	ZIG0.15.1	Success	2,695+362.73 RP
Aug 16, 2026 23:10	Tomislav Tunkovic	RUSTrust-1.95.0	Success	2,743+251.21 RP
Aug 16, 2026 13:15	marko1597	CPPg++13.3.0	Success	7,502
Aug 16, 2026 13:15	marko1597	CPPclang++20.1.2	Success	2,948
Aug 16, 2026 12:58	marko1597	CPPg++13.3.0	Success	158,957
Aug 16, 2026 12:52	marko1597	CPPg++11.5.0	Success	7,150
Aug 16, 2026 12:52	marko1597	CPPclang++17.0.6	Success	6,964
Aug 16, 2026 12:51	marko1597	CPPg++14.2.0	Success	39,527
Aug 16, 2026 12:45	marko1597	CPPg++12.4.0	Success	7,203
Aug 16, 2026 12:44	marko1597	CPPclang++19.1.1	Success	6,403
Aug 16, 2026 12:33	marko1597	CPPclang++18.1.3	Success	6,973
Aug 16, 2026 12:33	marko1597	CPPg++13.3.0	Success	293,635
Aug 16, 2026 12:15	marko1597	CPPg++14.2.0	Success	7,526
Aug 16, 2026 11:57	marko1597	CPPg++13.3.0	Success	282,146
Aug 16, 2026 11:49	marko1597	CPPg++13.3.0	Success	2,753
Aug 16, 2026 11:48	marko1597	CPPclang++20.1.2	Success	2,745+56.19 RP
Aug 16, 2026 11:24	marko1597	CPPg++13.3.0	Success	376,517
Aug 16, 2026 11:14	marko1597	CPPg++13.3.0	Success	2,788+44.47 RP
Aug 16, 2026 11:13	marko1597	CPPclang++20.1.2	Success	6,960
Aug 16, 2026 11:00	marko1597	CPPg++13.3.0	Success	404,902
Aug 16, 2026 10:45	marko1597	CPPg++13.3.0	Success	2,876
Aug 16, 2026 10:45	marko1597	CPPclang++20.1.2	Success	7,437
Aug 16, 2026 10:35	marko1597	CPPg++13.3.0	Success	2,854
Aug 16, 2026 10:35	marko1597	CPPclang++20.1.2	Success	6,993
Aug 16, 2026 10:07	marko1597	CPPclang++20.1.2	Success	2,840
Aug 16, 2026 09:52	marko1597	CPPclang++20.1.2	Success	7,005

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