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
May 2, 2026 13:02	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 13:01	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 13:01	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 13:00	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:58	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:58	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:57	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:48	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:44	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:43	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:42	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:39	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:38	Pavel Skripkin	RUSTrust-1.95.0	Error
May 2, 2026 12:37	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 22:01	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	22,523+4.24 RP
May 1, 2026 21:56	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	64,744
May 1, 2026 21:37	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	22,740+126.59 RP
May 1, 2026 21:32	Mehdi-Dehghan-Fooladi	CPPg++10.5.0	Success	107,240
May 1, 2026 21:25	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	32,379
May 1, 2026 21:17	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	41,198
May 1, 2026 20:23	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	31,932+0.79 RP
May 1, 2026 20:08	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Error
May 1, 2026 19:46	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Error
May 1, 2026 19:44	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Error
May 1, 2026 18:15	Pavel Skripkin	RUSTrust-1.95.0	Success	14,336
May 1, 2026 18:13	Pavel Skripkin	RUSTrust-1.95.0	Success	11,989+6.83 RP
May 1, 2026 18:12	Pavel Skripkin	RUSTrust-1.95.0	Success	12,728
May 1, 2026 18:11	Pavel Skripkin	RUSTrust-1.95.0	Success	12,858
May 1, 2026 18:08	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 18:04	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:57	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:56	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:55	Pavel Skripkin	RUSTrust-1.95.0	Success	12,876
May 1, 2026 17:54	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:53	Mehdi-Dehghan-Fooladi	CPPg++10.5.0	Success	32,013+301.27 RP
May 1, 2026 17:50	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:47	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:39	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:09	Mehdi-Dehghan-Fooladi	CPPg++10.5.0	Error
May 1, 2026 17:08	Victor Mercklé	CPPg++14.2.0	Success	3,754+119.94 RP
May 1, 2026 17:06	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:05	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:04	Pavel Skripkin	RUSTrust-1.95.0	Success	13,870
May 1, 2026 17:02	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 17:01	Mehdi-Dehghan-Fooladi	CPPg++10.5.0	Error
May 1, 2026 17:01	Pavel Skripkin	RUSTrust-1.95.0	Success	12,088+4.83 RP
May 1, 2026 16:59	Pavel Skripkin	RUSTrust-1.95.0	Success	12,159+6.58 RP
May 1, 2026 16:58	Pavel Skripkin	RUSTrust-1.95.0	Success	12,367
May 1, 2026 16:56	Pavel Skripkin	RUSTrust-1.95.0	Error
May 1, 2026 16:54	Pavel Skripkin	RUSTrust-1.95.0	Success	12,257+369.71 RP
May 1, 2026 16:51	Victor Mercklé	GOgo1.26.2	Success	3,931+1'667.75 RP
May 1, 2026 16:42	Mehdi-Dehghan-Fooladi	CPPg++10.5.0	Error
May 1, 2026 16:36	Pavel Skripkin	RUSTrust-1.95.0	Success	22,414+193.03 RP
May 1, 2026 16:30	Victor Mercklé	CPPg++14.2.0	Success	4,522+1'313.58 RP
May 1, 2026 15:32	Pavel Skripkin	RUSTrust-1.95.0	Success	43,765
May 1, 2026 15:07	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	900,762+11.10 RP
May 1, 2026 15:06	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Error
May 1, 2026 14:32	Pavel Skripkin	RUSTrust-1.95.0	Success	39,507+68.80 RP
May 1, 2026 14:15	Pavel Skripkin	RUSTrust-1.95.0	Success	54,986
May 1, 2026 13:41	Pavel Skripkin	RUSTrust-1.95.0	Success	54,255+89.19 RP
May 1, 2026 12:40	Pavel Skripkin	RUSTrust-1.95.0	Success	105,128+95.12 RP
May 1, 2026 11:38	Victor Mercklé	CPPg++14.2.0	Success	14,946
May 1, 2026 10:41	Victor Mercklé	CPPg++14.2.0	Success	66,372
May 1, 2026 09:58	Victor Mercklé	CPPg++14.2.0	Success	14,220
May 1, 2026 05:21	Charles Cabergs	CPPg++13.3.0	Success	8,959
Apr 30, 2026 23:21	Charles Cabergs	CPPg++13.3.0	Success	4,739
Apr 30, 2026 20:48	Charles Cabergs	CPPg++13.3.0	Success	4,736+5.00 RP
Apr 30, 2026 12:18	olliecrow	CPPg++10.5.0	Success	24,151
Apr 30, 2026 10:38	Victor Mercklé	CPPg++14.2.0	Success	11,138+581.77 RP
Apr 30, 2026 09:31	Victor Mercklé	CPPg++14.2.0	Success	112,680
Apr 30, 2026 09:13	Victor Mercklé	CPPg++14.2.0	Success	91,289
Apr 30, 2026 09:06	Victor Mercklé	CPPg++14.2.0	Success	36,284
Apr 30, 2026 08:49	Victor Mercklé	CPPg++14.2.0	Success	82,524
Apr 30, 2026 08:20	Victor Mercklé	CPPg++14.2.0	Success	36,040
Apr 30, 2026 08:06	Victor Mercklé	CPPg++14.2.0	Success	87,645
Apr 30, 2026 07:44	Victor Mercklé	CPPg++14.2.0	Success	79,956
Apr 30, 2026 07:28	Victor Mercklé	CPPg++14.2.0	Success	77,853+5.00 RP
Apr 30, 2026 07:08	olliecrow	CPPg++10.5.0	Success	23,758
Apr 30, 2026 06:09	olliecrow	CPPg++10.5.0	Success	24,787
Apr 30, 2026 03:10	olliecrow	CPPg++10.5.0	Success	25,427+5.00 RP
Apr 29, 2026 22:47	olliecrow	CPPg++10.5.0	Success	24,072
Apr 29, 2026 16:06	Charles Cabergs	CPPg++13.3.0	Success	4,735
Apr 29, 2026 14:32	olliecrow	CPPg++10.5.0	Success	3,339
Apr 29, 2026 13:56	TudyM	CPPclang++18.1.3	Success	17,487
Apr 29, 2026 13:53	TudyM	CPPg++14.2.0	Success	20,381
Apr 29, 2026 13:50	TudyM	CPPclang++18.1.3	Success	17,532
Apr 29, 2026 13:48	TudyM	CPPclang++18.1.3	Success	17,329+4.56 RP
Apr 29, 2026 13:45	TudyM	CPPclang++20.1.2	Success	17,542
Apr 29, 2026 13:40	TudyM	CPPclang++18.1.3	Success	104,881
Apr 29, 2026 13:36	TudyM	CPPclang++18.1.3	Success	17,473
Apr 29, 2026 13:33	TudyM	CPPclang++18.1.3	Success	124,307
Apr 29, 2026 07:27	olliecrow	CPPg++10.5.0	Success	25,366
Apr 29, 2026 07:25	olliecrow	CPPg++10.5.0	Success	23,775
Apr 29, 2026 07:15	olliecrow	CPPg++10.5.0	Success	3,315
Apr 29, 2026 06:24	olliecrow	CPPg++10.5.0	Success	23,839
Apr 29, 2026 05:21	Charles Cabergs	CPPg++13.3.0	Success	9,598
Apr 29, 2026 02:58	olliecrow	CPPclang++18.1.3	Success	20,310
Apr 29, 2026 01:51	olliecrow	CPPclang++18.1.3	Success	23,019
Apr 29, 2026 00:41	olliecrow	CPPg++10.5.0	Success	3,457
Apr 28, 2026 23:35	olliecrow	CPPg++10.5.0	Success	23,769

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