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
Feb 21, 2024 09:05	Huy Duc Le	CPPclang++10.0.0	Error
Feb 21, 2024 07:33	Huy Duc Le	CPPclang++10.0.0	Success	15,842
Feb 21, 2024 07:15	Huy Duc Le	CPPclang++10.0.0	Error
Feb 21, 2024 07:14	Huy Duc Le	CPPclang++10.0.0	Error
Feb 21, 2024 07:07	Huy Duc Le	CPPclang++10.0.0	Error
Feb 21, 2024 07:06	Huy Duc Le	CPPclang++10.0.0	Success	16,821
Feb 21, 2024 04:03	Huy Duc Le	CPPclang++10.0.0	Error
Feb 21, 2024 04:01	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 15:36	Huy Duc Le	CPPclang++10.0.0	Success	10,413+262.70 RP
Feb 20, 2024 15:20	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 15:16	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:51	Huy Duc Le	CPPclang++10.0.0	Success	15,594
Feb 20, 2024 14:50	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:36	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:35	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:34	Huy Duc Le	CPPclang++10.0.0	Success	15,208
Feb 20, 2024 14:33	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:22	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 14:20	Huy Duc Le	CPPclang++10.0.0	Success	14,334+369.29 RP
Feb 20, 2024 14:18	Huy Duc Le	CPPclang++10.0.0	Success	30,455+2.15 RP
Feb 20, 2024 13:40	Huy Duc Le	CPPclang++10.0.0	Success	35,890
Feb 20, 2024 13:36	Huy Duc Le	CPPclang++10.0.0	Success	34,183
Feb 20, 2024 13:34	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 13:28	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 13:24	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 13:17	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 12:58	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 11:10	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 11:09	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 11:08	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 11:02	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:54	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:51	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:50	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:49	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:47	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:44	Huy Duc Le	CPPclang++10.0.0	Success	30,656+1.29 RP
Feb 20, 2024 10:43	Huy Duc Le	CPPclang++10.0.0	Success	31,093
Feb 20, 2024 10:43	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:41	Huy Duc Le	CPPclang++10.0.0	Success	30,778+89.72 RP
Feb 20, 2024 10:37	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:34	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:33	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:31	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:29	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:28	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:26	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:25	Huy Duc Le	CPPclang++10.0.0	Success	42,520+71.86 RP
Feb 20, 2024 10:24	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:17	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:13	Huy Duc Le	CPPg++9.4.0	Success	64,025
Feb 20, 2024 10:09	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 10:06	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 10:04	Huy Duc Le	CPPg++9.4.0	Success	61,230+66.05 RP
Feb 20, 2024 10:01	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 10:00	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 09:58	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 09:55	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 09:45	Huy Duc Le	CPPclang++10.0.0	Success	128,090
Feb 20, 2024 09:34	Huy Duc Le	CPPclang++10.0.0	Success	141,223
Feb 20, 2024 09:30	Huy Duc Le	CPPclang++10.0.0	Success	103,500
Feb 20, 2024 09:17	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 09:05	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 09:02	Huy Duc Le	CPPclang++10.0.0	Error
Feb 20, 2024 08:59	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:56	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:52	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:49	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:48	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:46	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:45	Huy Duc Le	CPPg++9.4.0	Error
Feb 20, 2024 08:37	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 16:00	Huy Duc Le	CPPclang++10.0.0	Error
Feb 17, 2024 05:20	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 05:18	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 05:18	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 05:16	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 05:14	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 05:08	Huy Duc Le	CPPg++9.4.0	Success	110,874
Feb 17, 2024 01:39	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 01:37	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 01:34	Huy Duc Le	CPPg++9.4.0	Success	102,804+2.49 RP
Feb 17, 2024 01:34	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 01:28	Huy Duc Le	CPPg++9.4.0	Error
Feb 17, 2024 01:27	Huy Duc Le	CPPg++9.4.0	Success	105,503+84.79 RP
Feb 17, 2024 01:07	Huy Duc Le	CPPg++9.4.0	Success	1,000,396+10.00 RP
Jan 26, 2024 21:52	Jonathan Allen Grant	CPPg++9.4.0	Error
Jan 26, 2024 21:51	Jonathan Allen Grant	CPPg++9.4.0	Error
Jan 26, 2024 21:49	Jonathan Allen Grant	CPPclang++10.0.0	Error
Jan 26, 2024 21:46	Jonathan Allen Grant	CPPclang++10.0.0	Error
Jan 26, 2024 21:45	Jonathan Allen Grant	CPPclang++10.0.0	Error
Jan 26, 2024 21:44	Jonathan Allen Grant	CPPclang++10.0.0	Error
Jan 26, 2024 21:40	Jonathan Allen Grant	CPPclang++10.0.0	Error
Jan 26, 2024 21:38	Jonathan Allen Grant	CPPclang++10.0.0	Success	958,013
Jan 26, 2024 21:38	Jonathan Allen Grant	CPPclang++10.0.0	Success	965,222
Jan 26, 2024 21:37	Jonathan Allen Grant	CPPg++9.4.0	Success	980,381
Jan 26, 2024 21:35	Jonathan Allen Grant	CPPg++9.4.0	Success	977,158
Jan 26, 2024 21:34	Jonathan Allen Grant	CPPg++9.4.0	Success	961,680
Jan 26, 2024 21:31	Jonathan Allen Grant	CPPg++9.4.0	Success	969,076
Jan 26, 2024 21:03	Jonathan Allen Grant	CPPg++9.4.0	Error

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