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 23, 2026 21:40	Dominique Garmier	CPPg++13.3.0	Success	11,216
Mar 23, 2026 21:22	izotoff	GOgo1.23.3	Success	24,965
Mar 23, 2026 21:21	izotoff	GOgo1.25.4	Success	24,665
Mar 23, 2026 20:37	Dominique Garmier	CPPg++13.3.0	Success	9,547
Mar 23, 2026 20:33	Dominique Garmier	CPPg++13.3.0	Success	10,257
Mar 23, 2026 19:45	Dominique Garmier	CPPg++10.5.0	Success	9,543
Mar 23, 2026 19:44	Dominique Garmier	CPPg++10.5.0	Success	12,576
Mar 23, 2026 18:38	izotoff	GOgo1.25.4	Error
Mar 23, 2026 18:37	izotoff	GOgo1.25.4	Success	24,611
Mar 23, 2026 17:37	Dominique Garmier	CPPg++13.3.0	Success	17,101
Mar 23, 2026 17:03	Dominique Garmier	CPPg++13.3.0	Success	14,959
Mar 23, 2026 17:01	Dominique Garmier	CPPg++13.3.0	Success	9,542+22.57 RP
Mar 23, 2026 16:59	Dominique Garmier	CPPg++13.3.0	Success	9,752+0.84 RP
Mar 23, 2026 16:43	Dominique Garmier	CPPg++13.3.0	Success	9,760+34.10 RP
Mar 23, 2026 16:28	Dominique Garmier	CPPg++13.3.0	Success	19,046
Mar 23, 2026 16:25	Dominique Garmier	CPPg++13.3.0	Success	13,887
Mar 23, 2026 16:24	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 16:23	Dominique Garmier	CPPg++13.3.0	Success	11,849
Mar 23, 2026 16:05	Dominique Garmier	CPPg++13.3.0	Success	10,167
Mar 23, 2026 16:02	Dominique Garmier	CPPg++13.3.0	Success	19,020
Mar 23, 2026 15:16	Dominique Garmier	CPPg++13.3.0	Success	10,134
Mar 23, 2026 15:13	Dominique Garmier	CPPg++13.3.0	Success	15,037
Mar 23, 2026 15:12	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 15:10	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 15:09	Dominique Garmier	CPPclang++18.1.3	Success	10,216
Mar 23, 2026 15:05	Dominique Garmier	CPPg++13.3.0	Success	11,955
Mar 23, 2026 14:47	Dominique Garmier	CPPclang++18.1.3	Success	10,113
Mar 23, 2026 14:44	Dominique Garmier	GOgo1.26.1	Success	14,939+114.33 RP
Mar 23, 2026 14:38	Dominique Garmier	CPPg++13.3.0	Success	10,097
Mar 23, 2026 14:31	Dominique Garmier	CPPg++13.3.0	Success	12,552
Mar 23, 2026 14:26	Dominique Garmier	CPPg++13.3.0	Success	10,096+3.32 RP
Mar 23, 2026 14:23	Dominique Garmier	CPPg++13.3.0	Success	13,173
Mar 23, 2026 14:23	Dominique Garmier	CPPg++13.3.0	Success	13,086
Mar 23, 2026 13:05	Dominique Garmier	CPPg++13.3.0	Success	18,707
Mar 23, 2026 13:02	Dominique Garmier	CPPg++13.3.0	Success	22,673
Mar 23, 2026 12:12	Dominique Garmier	CPPg++13.3.0	Success	36,338
Mar 23, 2026 11:27	Dominique Garmier	CPPg++13.3.0	Success	10,512
Mar 23, 2026 11:24	Dominique Garmier	CPPg++13.3.0	Success	36,790
Mar 23, 2026 11:23	Dominique Garmier	CPPg++13.3.0	Success	10,130+23.59 RP
Mar 23, 2026 11:21	Dominique Garmier	CPPg++13.3.0	Success	11,589
Mar 23, 2026 10:36	Dominique Garmier	CPPg++13.3.0	Success	17,478
Mar 23, 2026 10:34	Dominique Garmier	CPPg++13.3.0	Success	16,385
Mar 23, 2026 07:22	Dominique Garmier	CPPg++13.3.0	Success	10,378+3.33 RP
Mar 23, 2026 07:21	Dominique Garmier	CPPg++13.3.0	Success	11,597
Mar 23, 2026 07:15	Dominique Garmier	CPPg++13.3.0	Success	11,455
Mar 23, 2026 07:14	Dominique Garmier	CPPg++13.3.0	Success	11,838
Mar 23, 2026 07:10	Dominique Garmier	CPPclang++18.1.3	Success	10,429
Mar 23, 2026 07:10	Dominique Garmier	CPPg++13.3.0	Success	10,414+10.13 RP
Mar 23, 2026 07:09	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 07:07	Dominique Garmier	CPPclang++18.1.3	Success	12,404
Mar 23, 2026 07:07	Dominique Garmier	CPPg++13.3.0	Success	13,675
Mar 23, 2026 05:17	Dominique Garmier	CPPg++13.3.0	Success	40,120
Mar 23, 2026 05:17	Dominique Garmier	CPPclang++18.1.3	Success	19,741
Mar 23, 2026 05:16	Dominique Garmier	CPPg++13.3.0	Success	16,713
Mar 23, 2026 04:51	Dominique Garmier	CPPg++13.3.0	Success	26,923
Mar 23, 2026 04:16	Dominique Garmier	CPPg++13.3.0	Success	16,494
Mar 23, 2026 04:16	Dominique Garmier	CPPg++13.3.0	Success	27,135
Mar 23, 2026 03:56	olliecrow	CPPclang++18.1.3	Success	3,527
Mar 23, 2026 03:46	Dominique Garmier	CPPg++13.3.0	Success	26,653
Mar 23, 2026 03:29	Dominique Garmier	CPPg++13.3.0	Success	27,280
Mar 23, 2026 03:29	Dominique Garmier	CPPg++13.3.0	Success	12,507
Mar 23, 2026 01:33	Dominique Garmier	CPPg++13.3.0	Success	12,500
Mar 23, 2026 01:26	Dominique Garmier	CPPg++13.3.0	Error
Mar 23, 2026 01:24	Dominique Garmier	CPPg++13.3.0	Success	16,592
Mar 23, 2026 00:33	izotoff	GOgo1.25.4	Success	24,477+4.11 RP
Mar 23, 2026 00:30	izotoff	GOgo1.25.4	Error
Mar 23, 2026 00:29	izotoff	GOgo1.25.4	Error
Mar 23, 2026 00:17	Dominique Garmier	CPPg++10.5.0	Success	25,818
Mar 23, 2026 00:10	izotoff	GOgo1.25.4	Success	31,529
Mar 23, 2026 00:09	izotoff	GOgo1.25.4	Success	31,105
Mar 23, 2026 00:07	izotoff	GOgo1.25.4	Success	31,334
Mar 23, 2026 00:03	izotoff	GOgo1.25.4	Success	30,360
Mar 22, 2026 23:57	izotoff	GOgo1.25.4	Success	30,399
Mar 22, 2026 23:51	izotoff	GOgo1.25.4	Success	30,240
Mar 22, 2026 23:50	izotoff	GOgo1.25.4	Success	31,117
Mar 22, 2026 23:46	izotoff	GOgo1.25.4	Success	31,729
Mar 22, 2026 23:42	Dominique Garmier	CPPg++13.3.0	Success	16,805
Mar 22, 2026 23:40	izotoff	GOgo1.25.4	Success	40,204
Mar 22, 2026 23:38	Dominique Garmier	CPPg++13.3.0	Success	19,383
Mar 22, 2026 23:37	Dominique Garmier	CPPg++13.3.0	Success	13,567
Mar 22, 2026 23:14	izotoff	GOgo1.25.4	Success	24,728
Mar 22, 2026 23:13	izotoff	GOgo1.25.4	Success	24,774
Mar 22, 2026 23:10	Dominique Garmier	CPPg++13.3.0	Success	13,508
Mar 22, 2026 23:09	Dominique Garmier	CPPg++13.3.0	Error
Mar 22, 2026 23:06	Dominique Garmier	CPPg++13.3.0	Success	28,158
Mar 22, 2026 22:56	Dominique Garmier	CPPg++13.3.0	Success	31,950
Mar 22, 2026 22:53	Dominique Garmier	CPPg++13.3.0	Success	110,571
Mar 22, 2026 22:23	izotoff	GOgo1.25.4	Success	24,726+159.20 RP
Mar 22, 2026 21:51	izotoff	GOgo1.25.4	Success	41,253
Mar 22, 2026 21:44	izotoff	GOgo1.25.4	Success	40,777+146.25 RP
Mar 22, 2026 21:15	Dominique Garmier	CPPg++13.3.0	Success	20,524
Mar 22, 2026 21:15	Dominique Garmier	CPPg++13.3.0	Success	13,817
Mar 22, 2026 21:12	Dominique Garmier	CPPclang++18.1.3	Success	18,636
Mar 22, 2026 21:09	Dominique Garmier	CPPg++13.3.0	Success	31,572
Mar 22, 2026 21:09	Dominique Garmier	CPPclang++18.1.3	Success	27,903
Mar 22, 2026 20:43	Dominique Garmier	CPPclang++18.1.3	Success	21,781
Mar 22, 2026 20:42	Dominique Garmier	CPPclang++18.1.3	Success	18,671
Mar 22, 2026 20:35	Dominique Garmier	CPPg++13.3.0	Success	31,992
Mar 22, 2026 20:22	Dominique Garmier	CPPg++13.3.0	Success	20,625
Mar 22, 2026 20:22	Dominique Garmier	GOgo1.26.1	Success	29,441

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