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
Jun 27, 2026 13:23	Victor Mercklé	RUSTrust-1.95.0	Success	12,103
Jun 27, 2026 13:12	Victor Mercklé	RUSTrust-1.95.0	Success	3,214+132.54 RP
Jun 27, 2026 12:04	Victor Mercklé	GOgo1.26.2	Success	3,300+194.23 RP
Jun 27, 2026 11:43	Victor Mercklé	GOgo1.26.2	Success	12,800
Jun 27, 2026 11:21	Victor Mercklé	GOgo1.26.2	Success	12,793
Jun 27, 2026 10:58	Victor Mercklé	GOgo1.26.2	Success	12,827
Jun 26, 2026 09:20	Zhou180	RUSTrust-1.95.0	Success	3,488+42.91 RP
Jun 26, 2026 09:14	Zhou180	RUSTrust-1.95.0	Success	22,119
Jun 26, 2026 09:13	Zhou180	RUSTrust-1.95.0	Success	22,071
Jun 26, 2026 09:11	Zhou180	RUSTrust-1.95.0	Success	21,700
Jun 26, 2026 09:09	Zhou180	RUSTrust-1.95.0	Success	21,918
Jun 26, 2026 09:07	Zhou180	RUSTrust-1.95.0	Success	22,025
Jun 26, 2026 09:06	Zhou180	RUSTrust-1.95.0	Success	21,853
Jun 26, 2026 09:05	Zhou180	RUSTrust-1.95.0	Success	21,851
Jun 26, 2026 09:03	Zhou180	RUSTrust-1.95.0	Success	21,565
Jun 26, 2026 09:00	Zhou180	RUSTrust-1.95.0	Success	21,989
Jun 26, 2026 08:58	Zhou180	RUSTrust-1.95.0	Success	21,843
Jun 26, 2026 08:54	Zhou180	RUSTrust-1.95.0	Success	3,739
Jun 26, 2026 08:52	Zhou180	RUSTrust-1.95.0	Success	3,739
Jun 26, 2026 08:48	Zhou180	RUSTrust-1.95.0	Success	22,066
Jun 26, 2026 08:44	Zhou180	RUSTrust-1.95.0	Success	22,096
Jun 26, 2026 08:41	Zhou180	RUSTrust-1.95.0	Success	21,797
Jun 26, 2026 08:38	Zhou180	RUSTrust-1.95.0	Success	22,097
Jun 26, 2026 08:37	Zhou180	RUSTrust-1.95.0	Success	22,081
Jun 26, 2026 08:33	Zhou180	RUSTrust-1.95.0	Success	21,817
Jun 26, 2026 08:32	Zhou180	RUSTrust-1.95.0	Success	21,911
Jun 26, 2026 08:28	Zhou180	RUSTrust-1.95.0	Success	3,880
Jun 26, 2026 08:26	Zhou180	RUSTrust-1.95.0	Success	3,857
Jun 26, 2026 08:25	Zhou180	RUSTrust-1.95.0	Success	21,617
Jun 26, 2026 08:22	Zhou180	RUSTrust-1.95.0	Success	21,903
Jun 26, 2026 08:21	Zhou180	RUSTrust-1.95.0	Success	21,641
Jun 26, 2026 08:10	Zhou180	RUSTrust-1.95.0	Success	21,267
Jun 26, 2026 08:08	Zhou180	RUSTrust-1.95.0	Success	21,830
Jun 26, 2026 08:06	Zhou180	RUSTrust-1.95.0	Success	3,581
Jun 26, 2026 08:05	Zhou180	RUSTrust-1.95.0	Success	21,797
Jun 26, 2026 08:03	Zhou180	RUSTrust-1.95.0	Success	21,359
Jun 26, 2026 08:01	Zhou180	RUSTrust-1.94.1	Success	21,752
Jun 26, 2026 07:58	Zhou180	RUSTrust-1.96.0	Success	22,134
Jun 26, 2026 07:57	Zhou180	RUSTrust-1.95.0	Success	21,847
Jun 26, 2026 07:54	Zhou180	RUSTrust-1.95.0	Success	21,767
Jun 26, 2026 07:53	Zhou180	RUSTrust-1.95.0	Success	21,233
Jun 26, 2026 07:51	Zhou180	RUSTrust-1.95.0	Success	21,450
Jun 26, 2026 07:50	Zhou180	RUSTrust-1.95.0	Success	21,474
Jun 26, 2026 07:48	Zhou180	RUSTrust-1.95.0	Success	21,556
Jun 26, 2026 07:46	Zhou180	RUSTrust-1.95.0	Success	3,541+47.83 RP
Jun 26, 2026 07:44	Zhou180	RUSTrust-1.95.0	Success	21,582
Jun 26, 2026 07:42	Zhou180	RUSTrust-1.78.0	Success	21,820
Jun 26, 2026 07:39	Zhou180	RUSTrust-1.95.0	Success	21,873
Jun 26, 2026 07:37	Zhou180	RUSTrust-1.95.0	Success	22,197
Jun 26, 2026 07:36	Zhou180	RUSTrust-1.95.0	Success	22,027
Jun 26, 2026 07:34	Zhou180	RUSTrust-1.95.0	Success	3,603
Jun 26, 2026 07:30	Zhou180	RUSTrust-1.95.0	Success	3,602+26.72 RP
Jun 26, 2026 07:28	Zhou180	RUSTrust-1.95.0	Success	21,738
Jun 26, 2026 07:25	Zhou180	RUSTrust-1.95.0	Success	21,766
Jun 26, 2026 07:23	Zhou180	RUSTrust-1.95.0	Success	22,082
Jun 26, 2026 07:22	Zhou180	RUSTrust-1.95.0	Success	3,652
Jun 26, 2026 07:19	Zhou180	RUSTrust-1.95.0	Success	21,079
Jun 26, 2026 07:17	Zhou180	RUSTrust-1.95.0	Success	3,637+69.27 RP
Jun 26, 2026 07:15	Zhou180	RUSTrust-1.95.0	Success	21,979
Jun 26, 2026 07:14	Zhou180	RUSTrust-1.95.0	Success	3,731+123.36 RP
Jun 26, 2026 07:10	Zhou180	RUSTrust-1.95.0	Success	21,829
Jun 26, 2026 07:06	Zhou180	RUSTrust-1.95.0	Success	4,106
Jun 26, 2026 07:04	Zhou180	RUSTrust-1.95.0	Success	3,917
Jun 26, 2026 07:01	Zhou180	RUSTrust-1.93.0	Success	3,945
Jun 26, 2026 06:59	Zhou180	RUSTrust-1.95.0	Success	3,916
Jun 26, 2026 06:53	Zhou180	RUSTrust-1.95.0	Success	21,719
Jun 26, 2026 06:51	Zhou180	RUSTrust-1.95.0	Success	3,918
Jun 26, 2026 06:47	Zhou180	RUSTrust-1.93.0	Success	3,911+23.96 RP
Jun 26, 2026 06:40	Zhou180	RUSTrust-1.95.0	Success	4,092
Jun 26, 2026 06:34	Zhou180	RUSTrust-1.95.0	Success	3,990
Jun 26, 2026 06:32	Zhou180	RUSTrust-1.95.0	Success	4,280
Jun 26, 2026 06:28	Zhou180	RUSTrust-1.95.0	Success	22,145
Jun 25, 2026 16:01	Zhou180	RUSTrust-1.95.0	Success	3,948+91.52 RP
Jun 25, 2026 16:00	Zhou180	RUSTrust-1.95.0	Success	4,096+210.76 RP
Jun 25, 2026 15:57	Zhou180	RUSTrust-1.95.0	Success	4,483+284.75 RP
Jun 25, 2026 15:55	Zhou180	RUSTrust-1.95.0	Success	5,139+173.48 RP
Jun 25, 2026 15:54	Zhou180	RUSTrust-1.95.0	Success	5,642+262.08 RP
Jun 25, 2026 15:51	Zhou180	RUSTrust-1.95.0	Success	6,621+802.03 RP
Jun 25, 2026 15:49	Zhou180	RUSTrust-1.95.0	Success	14,118+278.00 RP
Jun 25, 2026 15:39	Zhou180	RUSTrust-1.95.0	Success	24,339
Jun 25, 2026 15:34	Zhou180	RUSTrust-1.95.0	Success	23,382
Jun 25, 2026 15:32	Zhou180	RUSTrust-1.95.0	Success	23,239+31.89 RP
Jun 25, 2026 15:28	Zhou180	RUSTrust-1.95.0	Success	25,099+3.24 RP
Jun 25, 2026 15:25	Zhou180	RUSTrust-1.95.0	Success	25,305+395.18 RP
Jun 23, 2026 23:59	Victor Mercklé	CPPg++14.2.0	Success	12,025
Jun 23, 2026 23:54	Victor Mercklé	CPPg++14.2.0	Success	9,878
Jun 23, 2026 23:48	Victor Mercklé	CPPg++14.2.0	Success	3,127
Jun 23, 2026 23:43	Victor Mercklé	CPPg++14.2.0	Success	3,099
Jun 23, 2026 23:38	Victor Mercklé	CPPg++14.2.0	Success	12,126
Jun 23, 2026 23:33	Victor Mercklé	CPPg++14.2.0	Success	11,991
Jun 23, 2026 23:28	Victor Mercklé	CPPg++14.2.0	Success	11,971
Jun 23, 2026 23:21	Victor Mercklé	CPPg++14.2.0	Success	3,100
Jun 23, 2026 23:16	Victor Mercklé	CPPg++14.2.0	Success	3,393
Jun 23, 2026 23:11	Victor Mercklé	CPPg++14.2.0	Success	3,079
Jun 23, 2026 22:14	Victor Mercklé	CPPg++14.2.0	Success	3,140
Jun 23, 2026 22:09	Victor Mercklé	CPPg++14.2.0	Success	3,129
Jun 23, 2026 22:04	Victor Mercklé	CPPg++14.2.0	Success	3,132
Jun 23, 2026 21:59	Victor Mercklé	CPPg++14.2.0	Success	12,088
Jun 23, 2026 21:49	Victor Mercklé	CPPg++14.2.0	Success	3,078+2.11 RP
Jun 23, 2026 21:44	Victor Mercklé	CPPg++14.2.0	Success	12,010

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