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
Sep 8, 2026 08:23	Victor Mercklé	CPPg++14.2.0	Success	3,055
Sep 8, 2026 08:11	Victor Mercklé	CPPg++14.2.0	Success	2,615
Sep 8, 2026 08:09	Victor Mercklé	CPPg++14.2.0	Success	2,597
Sep 8, 2026 08:07	Victor Mercklé	CPPg++14.2.0	Success	2,593
Sep 8, 2026 08:01	Victor Mercklé	CPPg++14.2.0	Success	3,271
Sep 8, 2026 07:56	Victor Mercklé	CPPg++14.2.0	Success	5,960
Sep 8, 2026 07:48	Victor Mercklé	CPPg++14.2.0	Success	3,750
Sep 8, 2026 07:45	Victor Mercklé	CPPg++14.2.0	Success	22,053
Sep 8, 2026 07:37	Victor Mercklé	CPPg++14.2.0	Success	3,754
Sep 8, 2026 07:32	Victor Mercklé	CPPg++14.2.0	Success	5,333
Sep 8, 2026 07:30	Victor Mercklé	CPPg++14.2.0	Success	2,616
Sep 8, 2026 07:25	Victor Mercklé	CPPg++14.2.0	Success	2,593+2.98 RP
Sep 8, 2026 07:21	Victor Mercklé	CPPg++14.2.0	Success	2,599
Sep 8, 2026 07:18	Victor Mercklé	CPPg++14.2.0	Success	2,622
Sep 8, 2026 07:14	Victor Mercklé	CPPg++14.2.0	Success	2,610
Sep 8, 2026 07:11	Victor Mercklé	CPPg++14.2.0	Success	2,598
Sep 8, 2026 07:09	Victor Mercklé	CPPg++14.2.0	Success	2,595
Sep 8, 2026 07:06	Victor Mercklé	CPPg++14.2.0	Success	2,601
Sep 8, 2026 06:46	Victor Mercklé	CPPg++14.2.0	Success	2,645
Sep 8, 2026 06:13	Victor Mercklé	CPPg++14.2.0	Success	2,595
Sep 8, 2026 06:08	Victor Mercklé	CPPg++14.2.0	Success	2,606
Sep 8, 2026 06:01	Victor Mercklé	CPPg++14.2.0	Success	3,310
Sep 8, 2026 05:54	Victor Mercklé	CPPg++14.2.0	Success	2,600
Sep 8, 2026 05:49	Victor Mercklé	CPPg++14.2.0	Success	4,078
Sep 8, 2026 05:45	Victor Mercklé	CPPg++14.2.0	Success	9,151
Sep 8, 2026 05:41	Victor Mercklé	CPPg++14.2.0	Success	3,871
Sep 7, 2026 17:53	Victor Mercklé	CPPg++14.2.0	Success	2,605
Sep 7, 2026 17:44	Victor Mercklé	CPPg++14.2.0	Success	2,609
Sep 7, 2026 17:37	Victor Mercklé	CPPg++14.2.0	Success	3,213
Sep 7, 2026 17:28	Victor Mercklé	CPPg++14.2.0	Success	2,691
Sep 7, 2026 17:20	Victor Mercklé	CPPg++14.2.0	Success	2,601
Sep 7, 2026 17:15	Victor Mercklé	CPPg++14.2.0	Success	2,634
Sep 7, 2026 17:10	Victor Mercklé	CPPg++14.2.0	Success	2,656
Sep 7, 2026 17:03	Victor Mercklé	CPPg++14.2.0	Success	2,594+20.74 RP
Sep 7, 2026 16:54	Victor Mercklé	CPPg++14.2.0	Success	2,607
Sep 7, 2026 16:47	Victor Mercklé	CPPg++14.2.0	Success	2,714
Sep 7, 2026 16:41	Victor Mercklé	CPPg++14.2.0	Success	2,601+14.76 RP
Sep 7, 2026 16:37	Victor Mercklé	CPPg++14.2.0	Success	2,606+26.42 RP
Sep 7, 2026 16:25	Victor Mercklé	CPPg++14.2.0	Success	6,565
Sep 7, 2026 16:18	Victor Mercklé	CPPg++14.2.0	Success	2,968
Sep 7, 2026 16:06	Victor Mercklé	CPPg++14.2.0	Success	3,206
Sep 7, 2026 15:51	Victor Mercklé	CPPg++14.2.0	Success	5,523
Sep 7, 2026 15:46	Victor Mercklé	CPPg++14.2.0	Success	2,619
Sep 7, 2026 15:40	Victor Mercklé	CPPg++14.2.0	Success	2,632
Sep 7, 2026 14:34	Victor Mercklé	CPPg++14.2.0	Success	6,538
Sep 5, 2026 00:44	Josu San Martin	RUSTrust-1.95.0	Success	3,166
Sep 5, 2026 00:42	Josu San Martin	RUSTrust-1.95.0	Success	3,048
Sep 5, 2026 00:40	Josu San Martin	RUSTrust-1.95.0	Success	3,053
Sep 5, 2026 00:38	Josu San Martin	RUSTrust-1.95.0	Success	3,044+7.54 RP
Sep 5, 2026 00:36	Josu San Martin	RUSTrust-1.95.0	Success	3,058
Sep 5, 2026 00:34	Josu San Martin	RUSTrust-1.95.0	Success	3,052
Sep 5, 2026 00:32	Josu San Martin	RUSTrust-1.95.0	Success	3,068
Sep 5, 2026 00:30	Josu San Martin	RUSTrust-1.95.0	Success	3,059
Sep 4, 2026 10:04	Victor Mercklé	CPPg++14.2.0	Success	2,626
Sep 4, 2026 09:25	Victor Mercklé	CPPg++14.2.0	Success	2,617
Sep 4, 2026 08:56	Victor Mercklé	CPPg++14.2.0	Success	2,649
Sep 4, 2026 08:50	Victor Mercklé	CPPg++14.2.0	Success	2,779
Sep 4, 2026 08:30	Victor Mercklé	CPPg++14.2.0	Success	2,717
Sep 4, 2026 08:18	Victor Mercklé	CPPg++14.2.0	Success	5,636
Sep 4, 2026 07:59	Victor Mercklé	CPPg++14.2.0	Success	5,277
Sep 4, 2026 07:21	Josu San Martin	RUSTrust-1.95.0	Success	3,061
Sep 4, 2026 07:18	Josu San Martin	RUSTrust-1.95.0	Success	3,090
Sep 4, 2026 07:12	Josu San Martin	RUSTrust-1.95.0	Success	3,075
Sep 4, 2026 07:08	Josu San Martin	RUSTrust-1.95.0	Success	3,068
Sep 4, 2026 07:04	Josu San Martin	RUSTrust-1.95.0	Success	3,068
Sep 4, 2026 06:59	Josu San Martin	RUSTrust-1.95.0	Success	3,089
Sep 4, 2026 06:57	Victor Mercklé	CPPg++14.2.0	Success	2,615+26.24 RP
Sep 4, 2026 06:55	Josu San Martin	RUSTrust-1.95.0	Success	3,075
Sep 4, 2026 06:51	Josu San Martin	RUSTrust-1.95.0	Success	3,080
Sep 4, 2026 06:47	Josu San Martin	RUSTrust-1.95.0	Success	3,079
Sep 4, 2026 06:43	Josu San Martin	RUSTrust-1.95.0	Success	3,072
Sep 4, 2026 06:40	Josu San Martin	RUSTrust-1.95.0	Success	3,067
Sep 4, 2026 06:35	Josu San Martin	RUSTrust-1.95.0	Success	3,089
Sep 4, 2026 06:31	Josu San Martin	RUSTrust-1.95.0	Success	3,070
Sep 4, 2026 06:27	Josu San Martin	RUSTrust-1.95.0	Success	3,063
Sep 4, 2026 06:20	Josu San Martin	RUSTrust-1.95.0	Success	14,132
Sep 4, 2026 06:16	Josu San Martin	RUSTrust-1.95.0	Success	3,077
Sep 4, 2026 00:20	Josu San Martin	CPPg++14.2.0	Success	3,051+1.07 RP
Sep 4, 2026 00:16	Josu San Martin	RUSTrust-1.95.0	Success	3,081
Sep 4, 2026 00:10	Josu San Martin	RUSTrust-1.95.0	Success	15,264
Sep 4, 2026 00:06	Josu San Martin	RUSTrust-1.95.0	Success	3,078
Sep 4, 2026 00:01	Josu San Martin	RUSTrust-1.95.0	Success	3,052+20.27 RP
Sep 3, 2026 23:54	Josu San Martin	RUSTrust-1.95.0	Success	3,175
Sep 3, 2026 23:44	Josu San Martin	RUSTrust-1.95.0	Success	15,199
Sep 3, 2026 23:37	Josu San Martin	RUSTrust-1.95.0	Success	3,141
Sep 3, 2026 23:32	Josu San Martin	RUSTrust-1.95.0	Success	3,076
Sep 3, 2026 23:20	Josu San Martin	RUSTrust-1.95.0	Success	3,311
Sep 3, 2026 23:16	Josu San Martin	RUSTrust-1.95.0	Success	3,071+48.06 RP
Sep 3, 2026 23:12	Josu San Martin	RUSTrust-1.95.0	Success	3,624
Sep 3, 2026 23:08	Josu San Martin	RUSTrust-1.95.0	Success	3,117+112.24 RP
Sep 3, 2026 23:02	Josu San Martin	RUSTrust-1.95.0	Success	15,486
Sep 3, 2026 22:56	Josu San Martin	RUSTrust-1.95.0	Success	3,251
Sep 3, 2026 22:32	Josu San Martin	RUSTrust-1.95.0	Success	3,255
Sep 3, 2026 22:27	Josu San Martin	RUSTrust-1.95.0	Success	15,527
Sep 3, 2026 22:23	Josu San Martin	RUSTrust-1.95.0	Success	3,293
Sep 3, 2026 22:17	Josu San Martin	RUSTrust-1.95.0	Success	3,248
Sep 3, 2026 22:13	Josu San Martin	RUSTrust-1.95.0	Success	15,397
Sep 3, 2026 22:08	Josu San Martin	RUSTrust-1.95.0	Success	3,248
Sep 3, 2026 22:03	Josu San Martin	RUSTrust-1.95.0	Success	15,412
Sep 3, 2026 21:58	Josu San Martin	RUSTrust-1.95.0	Success	4,022

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