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 14, 2026 21:03	Tomislav Tunkovic	CPPclang++20.1.2	Success	2,822+7.52 RP
Aug 14, 2026 20:54	Tomislav Tunkovic	CPPclang++20.1.2	Success	2,828+39.56 RP
Aug 14, 2026 20:48	Tomislav Tunkovic	CPPclang++20.1.2	Success	2,860+264.44 RP
Aug 14, 2026 20:41	Tomislav Tunkovic	CPPclang++20.1.2	Success	3,094+529.36 RP
Aug 14, 2026 20:34	marko1597	CPPg++12.4.0	Success	3,586
Aug 14, 2026 20:34	marko1597	CPPclang++20.1.2	Success	3,558+22.72 RP
Aug 14, 2026 20:33	marko1597	CPPg++14.2.0	Success	3,597
Aug 14, 2026 20:23	Tomislav Tunkovic	CPPclang++20.1.2	Success	10,853
Aug 14, 2026 20:18	marko1597	CPPg++13.3.0	Success	3,587+126.86 RP
Aug 14, 2026 20:05	Tomislav Tunkovic	CPPclang++20.1.2	Success	3,700+221.93 RP
Aug 14, 2026 19:50	Tomislav Tunkovic	CPPclang++20.1.2	Success	4,031+2'161.17 RP
Aug 14, 2026 19:45	marko1597	CPPg++13.3.0	Success	3,889
Aug 14, 2026 19:07	marko1597	CPPg++13.3.0	Success	3,836
Aug 14, 2026 19:00	Tomislav Tunkovic	CPPclang++20.1.2	Success	31,289+324.60 RP
Aug 14, 2026 18:50	marko1597	CPPg++13.3.0	Success	56,034
Aug 14, 2026 18:43	marko1597	CPPg++13.3.0	Success	3,948
Aug 14, 2026 18:34	marko1597	CPPclang++18.1.3	Success	3,808
Aug 14, 2026 18:33	marko1597	CPPg++13.3.0	Success	3,758+47.29 RP
Aug 14, 2026 18:33	marko1597	CPPclang++20.1.2	Success	3,842
Aug 14, 2026 18:27	marko1597	CPPg++14.2.0	Success	3,826+10.21 RP
Aug 14, 2026 18:21	marko1597	CPPg++14.2.0	Success	3,841+234.38 RP
Aug 14, 2026 18:12	marko1597	CPPg++14.2.0	Success	4,221+664.37 RP
Aug 14, 2026 18:06	marko1597	CPPg++14.2.0	Success	106,256
Aug 14, 2026 17:55	marko1597	CPPg++14.2.0	Success	86,255
Aug 14, 2026 17:50	marko1597	CPPg++14.2.0	Success	5,866+1'685.43 RP
Aug 14, 2026 17:29	marko1597	CPPg++14.2.0	Success	596,736
Aug 14, 2026 17:18	marko1597	CPPg++14.2.0	Success	597,705
Aug 14, 2026 15:28	marko1597	CPPg++14.2.0	Success	517,908+24.31 RP
Aug 3, 2026 13:56	Victor Mercklé	CPPg++14.2.0	Success	3,208
Aug 3, 2026 13:51	Victor Mercklé	CPPg++14.2.0	Success	3,287
Aug 3, 2026 13:46	Victor Mercklé	CPPg++14.2.0	Success	3,377
Aug 3, 2026 13:41	Victor Mercklé	CPPg++14.2.0	Success	3,392
Aug 2, 2026 21:44	Tony	CPPg++10.5.0	Success	1,007,427+5.00 RP
Aug 2, 2026 19:35	Yiheng He	CPPg++10.5.0	Success	1,003,578+14.96 RP
Jul 31, 2026 06:14	Tony	CPPg++10.5.0	Success	1,000,731+9.99 RP
Jul 18, 2026 21:25	Andrew Tsibin	RUSTrust-1.95.0	Success	2,994+914.59 RP
Jul 18, 2026 20:11	Andrew Tsibin	RUSTrust-1.95.0	Success	4,123+2'425.42 RP
Jul 15, 2026 17:21	Maya Rebholz	CPPg++10.5.0	Success	5,362
Jul 15, 2026 17:11	Maya Rebholz	CPPg++10.5.0	Error
Jul 15, 2026 17:07	Maya Rebholz	CPPg++10.5.0	Error
Jul 15, 2026 16:57	Maya Rebholz	CPPg++10.5.0	Error	+692.19 RP
Jul 15, 2026 16:53	Maya Rebholz	CPPg++10.5.0	Success	7,866+57.55 RP
Jul 15, 2026 16:48	Maya Rebholz	CPPg++10.5.0	Success	8,239+182.71 RP
Jul 15, 2026 16:42	Maya Rebholz	CPPg++10.5.0	Error
Jul 15, 2026 16:40	Maya Rebholz	CPPg++10.5.0	Error
Jul 15, 2026 16:38	Maya Rebholz	CPPg++10.5.0	Error
Jul 14, 2026 19:40	Victor Mercklé	CPPg++14.2.0	Success	2,974
Jul 14, 2026 19:35	Victor Mercklé	CPPg++14.2.0	Success	3,011
Jul 14, 2026 19:30	Victor Mercklé	CPPg++14.2.0	Success	3,204
Jul 14, 2026 19:25	Victor Mercklé	CPPg++14.2.0	Success	3,008
Jul 14, 2026 19:20	Victor Mercklé	CPPg++14.2.0	Success	11,848
Jul 10, 2026 19:06	Genos0	CPPg++10.5.0	Success	108,587+82.11 RP
Jul 10, 2026 18:23	Genos0	CPPg++10.5.0	Success	1,001,318+9.99 RP
Jul 9, 2026 18:41	Victor Mercklé	CPPg++14.2.0	Success	12,880
Jul 9, 2026 18:28	Victor Mercklé	CPPg++14.2.0	Success	11,784
Jul 9, 2026 18:23	Victor Mercklé	CPPg++14.2.0	Success	2,929
Jul 9, 2026 18:16	Victor Mercklé	CPPg++14.2.0	Success	3,136
Jul 9, 2026 18:11	Victor Mercklé	CPPg++14.2.0	Success	2,979
Jul 9, 2026 18:04	Victor Mercklé	CPPg++14.2.0	Success	11,734
Jul 9, 2026 17:54	Victor Mercklé	CPPg++14.2.0	Success	11,759
Jul 9, 2026 07:33	Victor Mercklé	CPPg++14.2.0	Success	2,968
Jul 9, 2026 07:20	Victor Mercklé	CPPg++14.2.0	Success	2,940
Jul 9, 2026 07:15	Victor Mercklé	CPPg++14.2.0	Success	2,911
Jul 9, 2026 07:09	Victor Mercklé	CPPg++14.2.0	Success	2,940
Jul 9, 2026 07:04	Victor Mercklé	CPPg++14.2.0	Success	2,877+9.64 RP
Jul 9, 2026 06:59	Victor Mercklé	CPPg++14.2.0	Success	9,261
Jul 9, 2026 06:53	Victor Mercklé	CPPg++14.2.0	Success	2,905
Jul 9, 2026 06:48	Victor Mercklé	CPPg++14.2.0	Success	2,890
Jul 9, 2026 06:41	Victor Mercklé	CPPg++14.2.0	Success	3,037
Jul 8, 2026 12:48	Victor Mercklé	CPPg++14.2.0	Success	3,257
Jul 8, 2026 12:38	Victor Mercklé	CPPg++14.2.0	Success	3,055
Jul 8, 2026 12:33	Victor Mercklé	CPPg++14.2.0	Success	2,898
Jul 8, 2026 12:26	Victor Mercklé	CPPg++14.2.0	Success	2,925
Jul 8, 2026 12:15	Victor Mercklé	CPPg++14.2.0	Success	2,905
Jul 8, 2026 12:08	Victor Mercklé	CPPg++14.2.0	Success	2,913
Jul 8, 2026 03:43	Victor Mercklé	RUSTrust-1.95.0	Success	11,696
Jul 8, 2026 03:38	Victor Mercklé	RUSTrust-1.95.0	Success	11,770
Jul 8, 2026 03:33	Victor Mercklé	RUSTrust-1.95.0	Success	2,992
Jul 8, 2026 03:28	Victor Mercklé	RUSTrust-1.95.0	Success	2,946+31.96 RP
Jul 8, 2026 03:23	Victor Mercklé	RUSTrust-1.95.0	Success	2,974+203.92 RP
Jul 8, 2026 03:18	Victor Mercklé	RUSTrust-1.95.0	Success	12,006
Jul 8, 2026 02:34	Victor Mercklé	GOgo1.26.2	Success	3,088+208.04 RP
Jul 8, 2026 01:51	Victor Mercklé	RUSTrust-1.95.0	Success	3,205
Jul 8, 2026 01:44	Victor Mercklé	GOgo1.26.2	Success	12,553
Jul 7, 2026 16:57	Victor Mercklé	CPPg++14.2.0	Success	2,891
Jul 7, 2026 16:46	Victor Mercklé	CPPg++14.2.0	Success	2,944
Jul 7, 2026 13:09	Victor Mercklé	CPPg++14.2.0	Success	16,709
Jul 7, 2026 12:59	Victor Mercklé	CPPg++14.2.0	Success	2,962
Jul 7, 2026 12:54	Victor Mercklé	CPPg++14.2.0	Success	2,957
Jul 7, 2026 12:45	Victor Mercklé	CPPg++14.2.0	Success	12,298
Jul 7, 2026 12:21	Victor Mercklé	CPPg++14.2.0	Success	2,890
Jul 7, 2026 12:15	Victor Mercklé	CPPg++14.2.0	Success	3,065
Jul 7, 2026 12:10	Victor Mercklé	CPPg++14.2.0	Success	2,914
Jul 7, 2026 12:02	Victor Mercklé	CPPg++14.2.0	Success	5,668
Jul 7, 2026 11:51	Victor Mercklé	CPPg++14.2.0	Success	2,938
Jul 7, 2026 11:46	Victor Mercklé	CPPg++14.2.0	Success	2,896
Jul 7, 2026 11:34	Victor Mercklé	CPPg++14.2.0	Success	2,894
Jul 7, 2026 11:29	Victor Mercklé	CPPg++14.2.0	Success	11,672
Jul 7, 2026 11:24	Victor Mercklé	CPPg++14.2.0	Success	2,940
Jul 7, 2026 11:14	Victor Mercklé	CPPg++14.2.0	Success	2,937

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