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 26, 2026 22:19	Dominique Garmier	RUSTrust-1.94.1	Success	211,873
Mar 26, 2026 22:07	Dominique Garmier	RUSTrust-1.94.0	Success	9,409
Mar 26, 2026 22:02	Dominique Garmier	CPPg++13.3.0	Success	17,200
Mar 26, 2026 21:59	Dominique Garmier	CPPg++13.3.0	Success	10,218
Mar 26, 2026 21:58	Dominique Garmier	CPPg++13.3.0	Error
Mar 26, 2026 21:47	Dominique Garmier	CPPg++13.3.0	Success	9,408
Mar 26, 2026 21:44	Dominique Garmier	CPPg++13.3.0	Success	18,772
Mar 26, 2026 21:38	Dominique Garmier	CPPclang++18.1.3	Success	10,590
Mar 26, 2026 21:33	Dominique Garmier	CPPg++13.3.0	Success	10,030
Mar 26, 2026 21:27	Dominique Garmier	CPPg++13.3.0	Success	10,019
Mar 26, 2026 21:23	Dominique Garmier	CPPg++13.3.0	Success	9,385
Mar 26, 2026 21:20	Dominique Garmier	CPPg++13.3.0	Success	9,333+23.47 RP
Mar 26, 2026 21:07	Dominique Garmier	CPPg++13.3.0	Error
Mar 26, 2026 20:59	Dominique Garmier	RUSTrust-1.94.1	Success	209,943
Mar 26, 2026 19:52	Dominique Garmier	CPPg++10.5.0	Success	10,201
Mar 26, 2026 19:28	Dominique Garmier	CPPg++13.3.0	Success	10,090
Mar 26, 2026 19:16	Dominique Garmier	CPPclang++18.1.3	Success	10,123
Mar 26, 2026 18:55	Dominique Garmier	RUSTrust-1.94.1	Success	160,166
Mar 26, 2026 18:23	Arseniy Korobenko	CPPclang++18.1.3	Success	9,762+9.77 RP
Mar 26, 2026 18:20	Arseniy Korobenko	CPPclang++18.1.3	Success	9,856+0.82 RP
Mar 26, 2026 18:13	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 17:22	Arseniy Korobenko	CPPclang++18.1.3	Success	9,864+11.28 RP
Mar 26, 2026 16:54	Dominique Garmier	RUSTrust-1.94.1	Success	216,741
Mar 26, 2026 16:38	Dominique Garmier	RUSTrust-1.94.1	Success	212,965
Mar 26, 2026 14:47	Dominique Garmier	CPPclang++18.1.3	Success	10,828
Mar 26, 2026 14:45	Dominique Garmier	CPPg++13.3.0	Success	10,372
Mar 26, 2026 14:44	Dominique Garmier	CPPclang++18.1.3	Success	10,860
Mar 26, 2026 14:34	Arseniy Korobenko	CPPclang++18.1.3	Success	9,975+6.59 RP
Mar 26, 2026 14:32	Arseniy Korobenko	CPPclang++18.1.3	Success	10,068
Mar 26, 2026 14:31	Arseniy Korobenko	CPPclang++18.1.3	Success	11,627
Mar 26, 2026 14:25	Arseniy Korobenko	CPPclang++18.1.3	Success	10,041+259.59 RP
Mar 26, 2026 14:04	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 14:03	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 14:01	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 13:44	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 13:10	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 13:02	Dominique Garmier	CPPg++13.3.0	Success	10,133
Mar 26, 2026 12:58	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 26, 2026 11:42	Dominique Garmier	CPPg++13.3.0	Success	12,513
Mar 26, 2026 11:02	Dominique Garmier	ZIG0.13.0	Success	12,658
Mar 26, 2026 11:02	Dominique Garmier	ZIG0.13.0	Success	12,441
Mar 26, 2026 10:57	Dominique Garmier	RUSTrust-1.94.0	Success	12,481
Mar 26, 2026 10:44	Dominique Garmier	ZIG0.13.0	Success	41,501
Mar 26, 2026 10:41	Dominique Garmier	ZIG0.13.0	Success	12,700
Mar 26, 2026 09:44	Arseniy Korobenko	CPPclang++18.1.3	Success	13,581+635.66 RP
Mar 25, 2026 21:41	Dominique Garmier	ZIG0.13.0	Success	10,494
Mar 25, 2026 20:41	Dominique Garmier	ZIG0.13.0	Success	10,540
Mar 25, 2026 20:34	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 25, 2026 20:30	Arseniy Korobenko	CPPclang++18.1.3	Error
Mar 25, 2026 20:26	Dominique Garmier	ZIG0.13.0	Success	13,630
Mar 25, 2026 19:59	Dominique Garmier	ZIG0.13.0	Success	10,455
Mar 25, 2026 18:19	Dominique Garmier	RUSTrust-1.94.0	Success	22,341
Mar 25, 2026 17:58	Dominique Garmier	ZIG0.13.0	Success	55,685
Mar 25, 2026 17:12	Dominique Garmier	RUSTrust-1.94.0	Success	209,902
Mar 25, 2026 15:59	Dominique Garmier	ZIG0.13.0	Success	31,482
Mar 25, 2026 15:41	Dominique Garmier	ZIG0.13.0	Success	73,916
Mar 25, 2026 15:39	Dominique Garmier	ZIG0.13.0	Success	17,109
Mar 25, 2026 15:22	Dominique Garmier	RUSTrust-1.94.0	Success	28,529
Mar 25, 2026 15:15	Dominique Garmier	ZIG0.13.0	Success	17,865
Mar 25, 2026 14:33	olliecrow	CPPclang++18.1.3	Success	15,365
Mar 25, 2026 14:20	Dominique Garmier	ZIG0.13.0	Success	74,543
Mar 25, 2026 14:08	Dominique Garmier	ZIG0.13.0	Success	36,482
Mar 25, 2026 13:17	Dominique Garmier	CPPclang++18.1.3	Success	37,567
Mar 25, 2026 13:06	Dominique Garmier	CPPclang++18.1.3	Success	33,137
Mar 25, 2026 13:05	Dominique Garmier	CPPclang++18.1.3	Success	17,108
Mar 25, 2026 13:05	Dominique Garmier	CPPclang++18.1.3	Success	16,118
Mar 25, 2026 12:53	Dominique Garmier	ZIG0.13.0	Success	46,480
Mar 25, 2026 12:52	Dominique Garmier	ZIG0.13.0	Success	43,559
Mar 25, 2026 12:49	Dominique Garmier	ZIG0.13.0	Success	57,788
Mar 25, 2026 12:37	Dominique Garmier	RUSTrust-1.94.0	Success	14,434
Mar 25, 2026 11:48	Dominique Garmier	CPPg++13.3.0	Success	16,311
Mar 25, 2026 11:47	Dominique Garmier	CPPg++13.3.0	Success	12,446
Mar 25, 2026 11:38	Dominique Garmier	CPPg++13.3.0	Success	13,789
Mar 25, 2026 11:36	Dominique Garmier	CPPg++13.3.0	Success	11,836
Mar 25, 2026 10:37	Dominique Garmier	RUSTrust-1.94.0	Success	27,329
Mar 25, 2026 10:18	Dominique Garmier	RUSTrust-1.94.0	Success	12,736
Mar 25, 2026 10:16	Dominique Garmier	RUSTrust-1.94.0	Success	12,455
Mar 25, 2026 09:34	Dominique Garmier	CPPg++13.3.0	Success	30,814
Mar 25, 2026 09:32	Dominique Garmier	CPPg++13.3.0	Success	21,616
Mar 25, 2026 09:30	Dominique Garmier	CPPg++13.3.0	Success	14,723
Mar 25, 2026 08:57	Dominique Garmier	RUSTrust-1.94.0	Success	13,966
Mar 25, 2026 08:44	Dominique Garmier	GOgo1.26.1	Success	14,122+3.89 RP
Mar 25, 2026 08:24	Dominique Garmier	RUSTrust-1.94.0	Success	10,334
Mar 25, 2026 07:59	Dominique Garmier	CPPg++13.3.0	Success	15,111
Mar 25, 2026 07:30	Dominique Garmier	CPPg++13.3.0	Success	18,819
Mar 25, 2026 07:27	Dominique Garmier	CPPg++13.3.0	Success	10,093
Mar 25, 2026 07:25	Dominique Garmier	CPPg++13.3.0	Success	17,812
Mar 25, 2026 06:48	Dominique Garmier	GOgo1.26.1	Success	14,200+2.72 RP
Mar 25, 2026 06:48	Dominique Garmier	GOgo1.26.1	Error
Mar 25, 2026 06:47	Dominique Garmier	GOgo1.26.1	Success	15,755
Mar 25, 2026 06:17	Dominique Garmier	GOgo1.26.1	Error
Mar 25, 2026 06:16	Dominique Garmier	GOgo1.26.1	Success	14,980
Mar 25, 2026 05:46	Dominique Garmier	CPPg++13.3.0	Success	100,682
Mar 25, 2026 05:44	Dominique Garmier	CPPg++13.3.0	Success	31,507
Mar 25, 2026 05:43	Dominique Garmier	CPPg++13.3.0	Success	11,526
Mar 25, 2026 05:16	Dominique Garmier	CPPg++13.3.0	Success	13,781
Mar 25, 2026 05:16	Dominique Garmier	CPPclang++18.1.3	Success	13,824
Mar 25, 2026 05:04	Dominique Garmier	CPPg++13.3.0	Success	11,651
Mar 25, 2026 05:01	Dominique Garmier	CPPclang++18.1.3	Success	10,142
Mar 25, 2026 05:01	Dominique Garmier	CPPg++13.3.0	Success	10,134

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