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	1:20.1.2-0ubuntu1~24.04.2	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.
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	3.0.13-0ubuntu3.9	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 18, 2026 04:10	limanjun99	CPPg++13.3.0	Error
Mar 18, 2026 04:00	limanjun99	CPPg++13.3.0	Success	119,090
Mar 18, 2026 03:58	limanjun99	CPPg++13.3.0	Success	108,052
Mar 17, 2026 18:09	T Pratham	CPPg++13.3.0	Success	11,685+505.89 RP
Mar 17, 2026 17:52	T Pratham	CPPg++13.3.0	Success	43,130
Mar 17, 2026 17:42	T Pratham	CPPg++13.3.0	Success	42,496
Mar 17, 2026 17:38	T Pratham	CPPg++13.3.0	Success	28,579+257.38 RP
Mar 17, 2026 16:53	T Pratham	CPPg++13.3.0	Success	108,072+92.53 RP
Mar 17, 2026 16:50	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 16:45	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 16:40	T Pratham	CPPg++13.3.0	Error
Mar 17, 2026 14:29	limanjun99	CPPg++13.3.0	Success	41,104+0.06 RP
Mar 17, 2026 14:26	limanjun99	CPPg++13.3.0	Success	41,114+3.92 RP
Mar 17, 2026 14:25	limanjun99	CPPg++13.3.0	Success	41,788+129.31 RP
Mar 17, 2026 14:22	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:21	Dominique Garmier	CPPg++13.3.0	Success	18,754
Mar 17, 2026 14:19	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:15	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:14	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:13	limanjun99	CPPg++13.3.0	Success	121,271
Mar 17, 2026 14:12	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:11	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:11	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:06	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:03	limanjun99	CPPg++13.3.0	Success	103,721
Mar 17, 2026 14:02	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:01	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 14:01	limanjun99	CPPg++13.3.0	Success	103,357
Mar 17, 2026 14:00	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:59	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:57	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:56	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:53	limanjun99	CPPg++13.3.0	Error
Mar 17, 2026 13:48	limanjun99	CPPg++13.3.0	Success	90,917+23.78 RP
Mar 17, 2026 13:38	limanjun99	CPPg++13.3.0	Success	115,996+75.84 RP
Mar 17, 2026 10:56	limanjun99	CPPg++13.3.0	Success	964,669+10.37 RP
Mar 16, 2026 20:06	T Pratham	CPPg++13.3.0	Error
Mar 16, 2026 19:53	T Pratham	CPPg++13.3.0	Error
Mar 16, 2026 11:39	Dominique Garmier	CPPclang++18.1.3	Success	56,069
Mar 16, 2026 11:06	Dominique Garmier	CPPclang++18.1.3	Success	138,122
Mar 15, 2026 10:54	Dominique Garmier	CPPg++13.3.0	Success	13,626
Mar 14, 2026 21:53	Elijah Kin	CPPclang++18.1.3	Success	142,964
Mar 14, 2026 21:52	Elijah Kin	CPPclang++18.1.3	Success	77,741
Mar 14, 2026 21:51	Elijah Kin	CPPclang++18.1.3	Success	70,611
Mar 14, 2026 21:46	Elijah Kin	CPPclang++18.1.3	Success	97,644
Mar 14, 2026 21:42	Elijah Kin	CPPclang++18.1.3	Error
Mar 14, 2026 21:39	Elijah Kin	CPPclang++18.1.3	Success	65,730
Mar 14, 2026 21:30	Elijah Kin	CPPclang++18.1.3	Success	65,404+46.96 RP
Mar 14, 2026 21:01	Elijah Kin	CPPclang++18.1.3	Success	101,209
Mar 14, 2026 20:55	Elijah Kin	CPPclang++18.1.3	Success	103,906
Mar 14, 2026 20:49	Elijah Kin	CPPclang++18.1.3	Success	94,396+9.29 RP
Mar 14, 2026 20:45	Elijah Kin	CPPclang++18.1.3	Success	103,473+86.36 RP
Mar 14, 2026 20:37	Elijah Kin	CPPclang++18.1.3	Success	975,265
Mar 14, 2026 20:32	Elijah Kin	CPPg++13.3.0	Success	972,189+10.29 RP
Mar 14, 2026 11:20	Dominique Garmier	CPPg++13.3.0	Success	14,138
Mar 14, 2026 11:08	Dominique Garmier	CPPclang++18.1.3	Success	13,072+232.23 RP
Mar 14, 2026 11:02	Dominique Garmier	CPPclang++18.1.3	Success	18,833
Mar 13, 2026 16:16	Dominique Garmier	CPPclang++18.1.3	Success	18,814
Mar 13, 2026 15:57	Dominique Garmier	CPPclang++18.1.3	Success	40,777
Mar 13, 2026 15:33	Dominique Garmier	CPPclang++18.1.3	Success	41,107
Mar 13, 2026 15:01	Dominique Garmier	CPPclang++18.1.3	Success	18,770+183.53 RP
Mar 13, 2026 14:26	Dominique Garmier	CPPclang++18.1.3	Success	28,634+241.05 RP
Mar 13, 2026 11:20	Dominique Garmier	CPPg++13.3.0	Success	92,433+108.19 RP
Mar 13, 2026 02:15	Josu San Martin	RUSTrust-1.93.0	Success	11,194
Mar 13, 2026 02:15	Josu San Martin	RUSTrust-1.93.0	Success	11,221
Mar 13, 2026 02:15	Josu San Martin	RUSTrust-1.93.0	Success	4,056
Mar 13, 2026 02:15	Josu San Martin	RUSTrust-1.93.0	Success	11,641
Mar 12, 2026 23:42	Viktor Varbanov	CPPg++13.3.0	Success	973,195+10.28 RP
Mar 12, 2026 22:10	Josu San Martin	RUSTrust-1.93.0	Success	11,220
Mar 12, 2026 22:10	Josu San Martin	RUSTrust-1.93.0	Success	11,220
Mar 12, 2026 22:09	Josu San Martin	RUSTrust-1.93.0	Success	11,201
Mar 12, 2026 22:05	Josu San Martin	RUSTrust-1.93.0	Success	3,660
Mar 12, 2026 22:05	Josu San Martin	RUSTrust-1.93.0	Success	3,640
Mar 12, 2026 22:04	Josu San Martin	RUSTrust-1.93.0	Success	11,187
Mar 12, 2026 22:04	Josu San Martin	RUSTrust-1.93.0	Success	3,764
Mar 12, 2026 21:46	Josu San Martin	CPPclang++18.1.3	Error
Mar 12, 2026 21:44	Josu San Martin	RUSTrust-1.93.0	Success	11,140
Mar 12, 2026 21:36	Josu San Martin	RUSTrust-1.93.0	Success	11,223
Mar 12, 2026 21:36	Josu San Martin	RUSTrust-1.93.0	Success	11,275
Mar 12, 2026 21:36	Josu San Martin	RUSTrust-1.93.0	Success	3,405+27.48 RP
Mar 12, 2026 21:36	Josu San Martin	RUSTrust-1.93.0	Success	11,305
Mar 12, 2026 20:39	Josu San Martin	RUSTrust-1.93.0	Success	11,206
Mar 12, 2026 20:36	Josu San Martin	RUSTrust-1.93.0	Success	3,828
Mar 12, 2026 20:35	Josu San Martin	RUSTrust-1.93.0	Success	11,209
Mar 12, 2026 20:35	Josu San Martin	RUSTrust-1.93.0	Success	11,194
Mar 12, 2026 20:35	Josu San Martin	RUSTrust-1.93.0	Error
Mar 12, 2026 20:34	Josu San Martin	RUSTrust-1.93.0	Error
Mar 12, 2026 20:16	Josu San Martin	RUSTrust-1.93.0	Success	11,189
Mar 12, 2026 20:16	Josu San Martin	RUSTrust-1.93.0	Success	11,195
Mar 12, 2026 20:16	Josu San Martin	RUSTrust-1.93.0	Success	17,770
Mar 12, 2026 20:15	Josu San Martin	RUSTrust-1.93.0	Success	12,403
Mar 12, 2026 20:15	Josu San Martin	RUSTrust-1.93.0	Success	11,205
Mar 12, 2026 16:19	Josu San Martin	RUSTrust-1.93.0	Success	4,635
Mar 12, 2026 16:19	Josu San Martin	RUSTrust-1.93.0	Success	15,097
Mar 12, 2026 16:19	Josu San Martin	RUSTrust-1.93.0	Success	4,530
Mar 12, 2026 16:18	Josu San Martin	RUSTrust-1.93.0	Success	4,513
Mar 12, 2026 16:03	Josu San Martin	RUSTrust-1.93.0	Success	4,468
Mar 11, 2026 02:43	Sergey Serebryakov	CPPg++13.3.0	Success	13,458+743.05 RP
Mar 10, 2026 23:22	olliecrow	CPPclang++18.1.3	Success	3,419+8.53 RP
Mar 10, 2026 22:52	olliecrow	CPPclang++18.1.3	Success	9,269

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