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
Jan 15, 2025 07:27	Ian Mckibben	CPPclang++18.1.3	Success	249,749
Jan 15, 2025 07:03	Ian Mckibben	CPPclang++18.1.3	Success	108,069
Jan 15, 2025 06:58	Ian Mckibben	CPPclang++18.1.3	Success	48,676+73.04 RP
Jan 10, 2025 08:15	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:09	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:07	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:06	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:03	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:03	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:02	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:02	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:02	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 08:02	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 07:10	Ian Mckibben	CPPclang++18.1.3	Success	75,529+11.89 RP
Jan 10, 2025 07:07	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:12	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:11	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:10	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:09	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:08	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:07	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:05	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:04	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:03	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:02	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 06:01	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 05:59	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 05:58	Ian Mckibben	CPPclang++18.1.3	Error
Jan 10, 2025 05:51	Ian Mckibben	CPPclang++18.1.3	Success	95,068
Jan 10, 2025 05:41	Ian Mckibben	CPPg++13.2.0	Success	98,321
Jan 10, 2025 05:40	Ian Mckibben	CPPg++13.2.0	Error
Jan 10, 2025 05:35	Ian Mckibben	CPPg++13.2.0	Error
Jan 10, 2025 05:34	Ian Mckibben	CPPg++13.2.0	Error
Jan 10, 2025 05:33	Ian Mckibben	CPPg++13.2.0	Error
Jan 9, 2025 09:38	Ian Mckibben	CPPclang++18.1.3	Success	85,464
Jan 9, 2025 09:37	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:33	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:26	Ian Mckibben	CPPclang++18.1.3	Success	84,690
Jan 9, 2025 09:24	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:21	Ian Mckibben	CPPclang++18.1.3	Success	82,982+21.81 RP
Jan 9, 2025 09:20	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:19	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:18	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:17	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:15	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:09	Ian Mckibben	CPPclang++18.1.3	Success	969,343
Jan 9, 2025 09:08	Ian Mckibben	CPPclang++18.1.3	Success	970,436
Jan 9, 2025 09:06	Ian Mckibben	CPPclang++18.1.3	Success	971,454
Jan 9, 2025 09:05	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:03	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 09:01	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:54	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:53	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:52	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:51	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:49	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:48	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:46	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:44	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:33	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:32	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:27	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:26	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:25	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:22	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:20	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:18	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:18	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:16	Ian Mckibben	CPPclang++18.1.3	Success	110,282
Jan 9, 2025 08:13	Ian Mckibben	CPPclang++18.1.3	Success	108,041
Jan 9, 2025 08:10	Ian Mckibben	CPPclang++18.1.3	Success	101,319+2.19 RP
Jan 9, 2025 08:10	Ian Mckibben	CPPclang++18.1.3	Success	106,952
Jan 9, 2025 08:10	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:09	Ian Mckibben	CPPclang++18.1.3	Error
Jan 9, 2025 08:04	Ian Mckibben	CPPclang++18.1.3	Success	103,613+86.24 RP
Jan 9, 2025 08:01	Ian Mckibben	CPPclang++18.1.3	Success	973,234+10.28 RP
Dec 30, 2024 01:02	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:55	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:53	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:52	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:48	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:46	Joad Nacer	CPPclang++18.1.3	Error
Dec 30, 2024 00:44	Joad Nacer	CPPclang++18.1.3	Error
Dec 25, 2024 22:45	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 19:57	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 19:55	Joad Nacer	CPPg++13.2.0	Success	3,689+80.57 RP
Dec 25, 2024 19:51	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 19:47	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:46	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:44	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:39	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:35	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:31	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 12:23	Joad Nacer	CPPclang++18.1.3	Error
Dec 25, 2024 12:14	Joad Nacer	CPPclang++18.1.3	Error
Dec 25, 2024 12:10	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 11:26	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 11:18	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 11:01	Joad Nacer	CPPg++13.2.0	Error
Dec 25, 2024 10:42	Joad Nacer	CPPg++13.2.0	Error

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