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 21, 2026 22:22	Dominique Garmier	CPPg++13.3.0	Error
Mar 21, 2026 22:22	Dominique Garmier	CPPclang++18.1.3	Error
Mar 21, 2026 22:20	Dominique Garmier	CPPg++13.3.0	Error
Mar 21, 2026 22:20	Dominique Garmier	CPPclang++18.1.3	Error
Mar 21, 2026 22:18	Dominique Garmier	CPPg++13.3.0	Success	24,961
Mar 21, 2026 22:18	Dominique Garmier	CPPclang++18.1.3	Success	23,559
Mar 21, 2026 22:16	Dominique Garmier	CPPg++13.3.0	Error
Mar 21, 2026 22:16	Dominique Garmier	CPPclang++18.1.3	Error
Mar 21, 2026 22:14	Dominique Garmier	CPPg++13.3.0	Success	29,198
Mar 21, 2026 22:14	Dominique Garmier	CPPclang++18.1.3	Success	29,555
Mar 21, 2026 22:12	Dominique Garmier	CPPg++13.3.0	Success	12,930
Mar 21, 2026 22:12	Dominique Garmier	CPPclang++18.1.3	Success	13,191
Mar 21, 2026 20:38	Dominique Garmier	CPPclang++18.1.3	Success	13,316
Mar 21, 2026 20:36	Dominique Garmier	CPPclang++18.1.3	Success	12,651
Mar 21, 2026 20:35	Dominique Garmier	CPPclang++18.1.3	Success	13,256
Mar 21, 2026 20:31	Dominique Garmier	CPPclang++18.1.3	Success	21,338
Mar 21, 2026 20:29	Dominique Garmier	CPPclang++18.1.3	Success	15,622
Mar 21, 2026 20:27	Dominique Garmier	CPPclang++18.1.3	Success	13,152
Mar 21, 2026 20:25	Dominique Garmier	CPPclang++18.1.3	Success	14,000
Mar 21, 2026 20:24	Dominique Garmier	CPPclang++18.1.3	Success	20,370
Mar 21, 2026 20:23	Dominique Garmier	CPPclang++18.1.3	Success	13,140
Mar 21, 2026 19:42	Dominique Garmier	GOgo1.26.1	Success	42,155
Mar 21, 2026 17:32	Dominique Garmier	RUSTrust-1.94.0	Success	12,441+13.16 RP
Mar 21, 2026 16:07	Dominique Garmier	RUSTrust-1.94.0	Success	18,613
Mar 21, 2026 15:51	Dominique Garmier	RUSTrust-1.94.0	Success	18,383
Mar 21, 2026 14:33	Dominique Garmier	RUSTrust-1.94.0	Success	116,624
Mar 21, 2026 13:41	Dominique Garmier	CPPg++13.3.0	Success	13,489
Mar 21, 2026 13:34	olliecrow	ZIG0.14.0	Success	16,064
Mar 21, 2026 13:14	Dominique Garmier	CPPg++13.3.0	Success	16,325
Mar 21, 2026 13:04	olliecrow	CPPclang++18.1.3	Success	18,290
Mar 21, 2026 12:59	Dominique Garmier	CPPclang++18.1.3	Success	13,272
Mar 21, 2026 12:58	Dominique Garmier	CPPclang++18.1.3	Success	15,649
Mar 21, 2026 12:35	Dominique Garmier	CPPg++13.3.0	Success	14,251
Mar 21, 2026 12:34	Dominique Garmier	CPPclang++18.1.3	Success	13,229
Mar 21, 2026 11:39	Dominique Garmier	CPPclang++18.1.3	Success	13,007
Mar 21, 2026 11:37	Dominique Garmier	CPPclang++18.1.3	Success	22,945
Mar 21, 2026 11:35	Dominique Garmier	CPPclang++18.1.3	Success	17,415
Mar 21, 2026 11:32	Dominique Garmier	CPPg++13.3.0	Success	12,873
Mar 21, 2026 10:18	Dominique Garmier	CSHARP9.0.14	Success	482,344
Mar 21, 2026 09:26	Dominique Garmier	ZIG0.13.0	Success	119,146
Mar 21, 2026 04:55	Yuriy Lyfenko	CPPg++13.3.0	Success	4,175
Mar 21, 2026 04:50	Yuriy Lyfenko	CPPg++13.3.0	Success	4,097
Mar 21, 2026 04:40	Yuriy Lyfenko	CPPg++13.3.0	Error
Mar 21, 2026 04:35	Yuriy Lyfenko	CPPg++13.3.0	Success	4,122
Mar 21, 2026 04:32	Yuriy Lyfenko	CPPg++13.3.0	Success	4,087
Mar 21, 2026 04:26	Yuriy Lyfenko	CPPclang++18.1.3	Success	4,338
Mar 21, 2026 04:16	olliecrow	GOgo1.26.1	Success	32,645
Mar 21, 2026 03:12	Dominique Garmier	GOgo1.26.1	Success	62,236
Mar 21, 2026 01:12	Dominique Garmier	CPPg++13.3.0	Success	14,157
Mar 21, 2026 01:12	Dominique Garmier	CPPclang++18.1.3	Success	13,109
Mar 21, 2026 01:09	Dominique Garmier	CPPclang++18.1.3	Success	13,651
Mar 21, 2026 01:08	Dominique Garmier	CPPclang++18.1.3	Success	23,614
Mar 21, 2026 01:06	Dominique Garmier	RUSTrust-1.94.0	Success	157,797
Mar 20, 2026 15:14	olliecrow	ZIG0.14.0	Success	3,312
Mar 20, 2026 15:05	olliecrow	ZIG0.14.0	Success	21,330
Mar 20, 2026 14:58	olliecrow	ZIG0.14.0	Success	3,292
Mar 20, 2026 14:46	olliecrow	ZIG0.14.0	Success	3,287
Mar 20, 2026 14:40	olliecrow	ZIG0.14.0	Success	3,402
Mar 20, 2026 14:24	olliecrow	ZIG0.14.0	Success	21,296
Mar 20, 2026 14:22	olliecrow	ZIG0.14.0	Success	21,478
Mar 20, 2026 14:18	olliecrow	ZIG0.14.0	Success	21,271
Mar 20, 2026 14:13	olliecrow	ZIG0.14.0	Success	21,141
Mar 20, 2026 14:07	olliecrow	ZIG0.14.0	Success	3,278
Mar 20, 2026 14:03	olliecrow	ZIG0.14.0	Success	3,276+2'708.61 RP
Mar 20, 2026 13:47	olliecrow	ZIG0.14.0	Error
Mar 20, 2026 11:17	Dominique Garmier	CPPg++13.3.0	Success	13,988
Mar 20, 2026 11:07	Dominique Garmier	CPPg++13.3.0	Success	15,101
Mar 20, 2026 11:07	Dominique Garmier	CPPg++13.3.0	Success	13,258
Mar 20, 2026 08:51	Dominique Garmier	CPPclang++18.1.3	Success	13,148
Mar 20, 2026 07:47	Dominique Garmier	CPPclang++18.1.3	Success	13,100
Mar 20, 2026 05:51	olliecrow	ZIG0.14.0	Success	170,483
Mar 20, 2026 05:07	olliecrow	ZIG0.14.0	Success	21,973
Mar 20, 2026 05:04	olliecrow	ZIG0.14.0	Success	21,206+0.29 RP
Mar 20, 2026 05:00	olliecrow	ZIG0.14.0	Success	23,566
Mar 20, 2026 04:56	olliecrow	ZIG0.14.0	Success	21,298
Mar 20, 2026 04:45	olliecrow	ZIG0.14.0	Success	21,219+395.32 RP
Mar 20, 2026 04:43	olliecrow	ZIG0.14.0	Success	131,661+66.64 RP
Mar 20, 2026 04:23	olliecrow	RUSTrust-1.94.0	Success	3,467
Mar 20, 2026 04:21	olliecrow	RUSTrust-1.94.0	Success	23,007
Mar 20, 2026 04:18	olliecrow	RUSTrust-1.94.0	Success	3,437
Mar 20, 2026 04:16	olliecrow	RUSTrust-1.94.0	Success	3,492
Mar 20, 2026 04:15	olliecrow	RUSTrust-1.94.0	Success	3,666
Mar 20, 2026 04:11	olliecrow	RUSTrust-1.94.0	Success	23,075
Mar 20, 2026 04:03	olliecrow	RUSTrust-1.94.0	Success	3,496
Mar 20, 2026 04:00	olliecrow	RUSTrust-1.87.0	Success	3,599
Mar 20, 2026 03:59	olliecrow	RUSTrust-1.94.0	Success	3,534
Mar 20, 2026 03:57	olliecrow	RUSTrust-1.94.0	Success	3,636
Mar 20, 2026 03:53	olliecrow	RUSTrust-1.94.0	Success	23,026
Mar 20, 2026 03:41	olliecrow	RUSTrust-1.94.0	Success	22,730
Mar 20, 2026 03:38	olliecrow	RUSTrust-1.94.0	Success	30,711
Mar 20, 2026 03:29	olliecrow	RUSTrust-1.94.0	Success	17,642
Mar 20, 2026 03:15	olliecrow	CPPclang++18.1.3	Success	18,420
Mar 20, 2026 03:08	olliecrow	CPPclang++18.1.3	Success	3,589
Mar 20, 2026 03:06	olliecrow	CPPclang++18.1.3	Success	3,536
Mar 20, 2026 02:59	olliecrow	CPPclang++18.1.3	Success	18,330
Mar 20, 2026 02:42	Dominique Garmier	CPPclang++18.1.3	Success	12,935
Mar 20, 2026 02:34	Dominique Garmier	CPPclang++18.1.3	Success	27,484
Mar 20, 2026 02:32	Dominique Garmier	CPPclang++18.1.3	Success	12,902
Mar 20, 2026 02:31	Dominique Garmier	CPPclang++18.1.3	Success	13,108
Mar 20, 2026 02:17	Dominique Garmier	CPPclang++18.1.3	Success	18,771

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