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 4, 2026 00:59	olliecrow	CPPclang++18.1.3	Success	12,230
Mar 4, 2026 00:52	olliecrow	CPPclang++18.1.3	Success	12,251
Mar 4, 2026 00:46	olliecrow	CPPclang++18.1.3	Error
Mar 4, 2026 00:42	olliecrow	CPPclang++18.1.3	Success	12,415
Mar 4, 2026 00:38	olliecrow	CPPclang++18.1.3	Success	12,225+15.30 RP
Mar 4, 2026 00:29	olliecrow	CPPclang++18.1.3	Success	12,458+1.09 RP
Mar 4, 2026 00:25	olliecrow	CPPclang++18.1.3	Success	12,475+71.68 RP
Mar 4, 2026 00:19	olliecrow	CPPclang++18.1.3	Success	13,700+164.22 RP
Mar 4, 2026 00:13	olliecrow	CPPclang++18.1.3	Error
Mar 4, 2026 00:05	olliecrow	CPPclang++18.1.3	Success	18,520
Mar 3, 2026 23:40	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 23:31	olliecrow	CPPclang++18.1.3	Success	114,145
Mar 3, 2026 23:28	olliecrow	CPPg++13.3.0	Success	24,625
Mar 3, 2026 23:24	olliecrow	CPPclang++18.1.3	Success	17,677+0.03 RP
Mar 3, 2026 23:20	olliecrow	CPPclang++18.1.3	Success	17,678+160.08 RP
Mar 3, 2026 23:16	olliecrow	CPPg++13.3.0	Success	90,507
Mar 3, 2026 23:13	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 23:09	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 23:05	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 23:01	olliecrow	CPPg++13.3.0	Success	24,655+218.09 RP
Mar 3, 2026 22:55	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:49	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:44	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:41	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:38	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:34	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:29	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:24	olliecrow	CPPg++13.3.0	Success	53,330+187.51 RP
Mar 3, 2026 22:20	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 22:17	olliecrow	CPPg++13.3.0	Error
Mar 3, 2026 20:24	Josu San Martin	CSHARP9.0.13	Success	35,235
Mar 3, 2026 20:23	Josu San Martin	CSHARP9.0.13	Error
Mar 3, 2026 20:18	Josu San Martin	CSHARP9.0.13	Error
Mar 3, 2026 20:18	Josu San Martin	CSHARP9.0.13	Success	4,217+1'934.71 RP
Mar 3, 2026 20:03	Josu San Martin	CSHARP9.0.13	Error
Mar 3, 2026 19:49	Josu San Martin	CSHARP9.0.13	Success	158,178
Mar 3, 2026 19:47	Josu San Martin	CSHARP9.0.13	Error
Mar 3, 2026 05:20	Josu San Martin	CSHARP9.0.13	Success	157,943
Mar 3, 2026 05:03	Josu San Martin	CSHARP9.0.13	Success	157,297
Mar 3, 2026 05:01	Josu San Martin	CSHARP9.0.13	Success	192,291
Mar 3, 2026 04:57	Josu San Martin	CSHARP9.0.13	Success	186,142
Mar 3, 2026 04:55	Josu San Martin	CSHARP9.0.13	Success	419,473
Feb 28, 2026 15:07	Haha Expert	CPPg++13.3.0	Success	119,677+0.72 RP
Feb 28, 2026 15:03	Haha Expert	CPPg++13.3.0	Success	120,713+11.82 RP
Feb 28, 2026 15:01	Haha Expert	CPPg++13.3.0	Error
Feb 28, 2026 14:43	Haha Expert	CSHARP9.0.4	Success	140,811+16.56 RP
Feb 28, 2026 14:27	Haha Expert	CSHARP9.0.4	Error
Feb 28, 2026 14:16	Haha Expert	CSHARP9.0.4	Success	2,030,499
Feb 28, 2026 14:10	Haha Expert	CSHARP9.0.4	Error
Feb 28, 2026 13:56	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 17:17	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 17:15	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 15:12	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 14:59	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 14:54	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 14:48	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 14:45	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 12:36	Haha Expert	CSHARP9.0.4	Error
Feb 27, 2026 12:33	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:57	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:52	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:48	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:27	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:16	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:13	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:10	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 17:03	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 16:57	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 16:42	Haha Expert	CSHARP9.0.4	Error
Feb 26, 2026 16:39	Haha Expert	CSHARP9.0.4	Error
Feb 19, 2026 12:59	Aleksei Shahoika	CPPg++13.3.0	Success	84,473
Feb 19, 2026 12:57	Aleksei Shahoika	CPPg++13.3.0	Success	95,441
Feb 19, 2026 12:56	Aleksei Shahoika	CPPg++13.3.0	Success	95,085
Feb 19, 2026 12:55	Aleksei Shahoika	CPPg++13.3.0	Success	84,198
Feb 19, 2026 10:58	Aleksei Shahoika	CPPg++13.3.0	Error
Feb 19, 2026 10:56	Aleksei Shahoika	CPPg++13.3.0	Error
Feb 19, 2026 10:53	Aleksei Shahoika	CPPg++13.3.0	Error
Feb 19, 2026 10:24	Aleksei Shahoika	CPPg++13.3.0	Success	11,553+123.85 RP
Feb 19, 2026 10:24	Aleksei Shahoika	CPPg++13.3.0	Success	14,736
Feb 19, 2026 10:07	Aleksei Shahoika	CPPg++13.3.0	Error
Feb 19, 2026 10:04	Aleksei Shahoika	CPPg++13.3.0	Error
Feb 19, 2026 09:08	Aleksei Shahoika	CPPg++13.3.0	Success	13,482+741.73 RP
Feb 8, 2026 05:08	Josu San Martin	RUSTrust-1.93.0	Success	11,387
Feb 7, 2026 23:31	Josu San Martin	RUSTrust-1.93.0	Success	11,530
Feb 7, 2026 23:31	Josu San Martin	RUSTrust-1.92.0	Success	11,350
Feb 7, 2026 22:15	Josu San Martin	RUSTrust-1.92.0	Success	3,514
Feb 7, 2026 21:40	Josu San Martin	CPPclang++18.1.3	Success	13,750
Feb 7, 2026 21:05	Josu San Martin	RUSTrust-1.92.0	Success	3,540
Feb 7, 2026 16:32	Josu San Martin	CPPclang++18.1.3	Success	15,073
Feb 7, 2026 14:08	Josu San Martin	RUSTrust-1.92.0	Success	39,777
Feb 7, 2026 05:58	Josu San Martin	CPPclang++18.1.3	Success	3,761
Feb 7, 2026 05:49	Josu San Martin	RUSTrust-1.92.0	Success	11,208
Feb 7, 2026 05:46	Josu San Martin	CPPclang++18.1.3	Success	3,721
Feb 7, 2026 05:18	Josu San Martin	RUSTrust-1.92.0	Success	41,098
Feb 7, 2026 05:17	Josu San Martin	RUSTrust-1.92.0	Success	11,198
Feb 7, 2026 05:15	Josu San Martin	RUSTrust-1.92.0	Success	11,204
Feb 7, 2026 05:14	Josu San Martin	RUSTrust-1.92.0	Success	39,233
Feb 7, 2026 05:11	Josu San Martin	RUSTrust-1.92.0	Success	11,560
Feb 7, 2026 05:06	Josu San Martin	RUSTrust-1.92.0	Success	11,202
Feb 7, 2026 04:59	Josu San Martin	RUSTrust-1.92.0	Success	11,525

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