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 3, 2026 21:53	Josu San Martin	RUSTrust-1.95.0	Success	3,256
Sep 3, 2026 21:47	Josu San Martin	RUSTrust-1.95.0	Success	3,230+9.56 RP
Sep 3, 2026 20:55	Josu San Martin	RUSTrust-1.95.0	Success	6,167
Sep 3, 2026 20:39	Josu San Martin	CPPg++14.2.0	Success	3,346
Sep 3, 2026 20:24	Josu San Martin	RUSTrust-1.95.0	Success	3,265
Sep 3, 2026 20:08	Josu San Martin	RUSTrust-1.95.0	Success	3,242
Sep 3, 2026 19:57	Josu San Martin	RUSTrust-1.95.0	Success	3,526
Sep 3, 2026 19:42	Josu San Martin	RUSTrust-1.95.0	Success	3,313
Sep 3, 2026 18:47	Josu San Martin	RUSTrust-1.95.0	Success	3,255
Sep 3, 2026 18:31	Josu San Martin	RUSTrust-1.95.0	Success	3,240+17.99 RP
Sep 3, 2026 18:16	Josu San Martin	RUSTrust-1.95.0	Success	3,777
Sep 3, 2026 18:04	Josu San Martin	RUSTrust-1.95.0	Success	15,857
Sep 3, 2026 17:49	Josu San Martin	RUSTrust-1.95.0	Success	3,259+4.70 RP
Sep 3, 2026 17:33	Josu San Martin	RUSTrust-1.95.0	Success	3,329
Sep 3, 2026 17:18	Josu San Martin	RUSTrust-1.95.0	Success	3,264+1.88 RP
Sep 3, 2026 17:03	Josu San Martin	CPPg++14.2.0	Success	3,345
Sep 3, 2026 16:48	Josu San Martin	CPPg++14.2.0	Success	3,366
Sep 3, 2026 16:26	Josu San Martin	CPPg++14.2.0	Success	3,335
Sep 3, 2026 13:21	Josu San Martin	CPPg++14.2.0	Success	3,416
Sep 3, 2026 13:18	Josu San Martin	CPPg++14.2.0	Error
Sep 3, 2026 13:14	Josu San Martin	CPPg++14.2.0	Success	3,453
Sep 3, 2026 13:08	Josu San Martin	CPPg++14.2.0	Success	3,517
Sep 3, 2026 13:01	Josu San Martin	CPPclang++20.1.2	Success	3,342
Sep 3, 2026 12:56	Josu San Martin	CPPg++14.2.0	Success	3,339
Sep 3, 2026 12:52	Josu San Martin	CPPg++14.2.0	Success	3,506
Sep 3, 2026 12:47	Josu San Martin	CPPg++14.2.0	Success	3,683
Sep 3, 2026 12:39	Josu San Martin	CPPg++14.2.0	Success	14,456
Sep 3, 2026 11:59	Josu San Martin	CPPclang++20.1.2	Success	11,080
Sep 3, 2026 11:56	Josu San Martin	RUSTrust-1.95.0	Error
Sep 3, 2026 06:21	Josu San Martin	RUSTrust-1.95.0	Success	11,302
Sep 3, 2026 06:18	Josu San Martin	RUSTrust-1.95.0	Success	3,266+4.68 RP
Sep 3, 2026 06:16	Josu San Martin	RUSTrust-1.95.0	Success	3,271+80.09 RP
Sep 3, 2026 06:08	Josu San Martin	RUSTrust-1.95.0	Success	3,359+4.42 RP
Sep 3, 2026 06:06	Josu San Martin	RUSTrust-1.95.0	Success	3,364+9.69 RP
Sep 3, 2026 06:03	Josu San Martin	RUSTrust-1.95.0	Success	11,429
Sep 3, 2026 05:58	Josu San Martin	RUSTrust-1.95.0	Success	3,410
Sep 3, 2026 05:56	Josu San Martin	RUSTrust-1.95.0	Success	3,439
Sep 3, 2026 05:53	Josu San Martin	RUSTrust-1.95.0	Success	3,484
Sep 3, 2026 05:49	Josu San Martin	RUSTrust-1.95.0	Success	3,494
Sep 3, 2026 05:43	Josu San Martin	RUSTrust-1.95.0	Success	11,409
Sep 3, 2026 05:40	Josu San Martin	RUSTrust-1.95.0	Success	3,538
Sep 3, 2026 05:36	Josu San Martin	RUSTrust-1.95.0	Success	3,563
Sep 3, 2026 05:27	Josu San Martin	CPPg++14.2.0	Success	3,604
Sep 3, 2026 05:24	Josu San Martin	CPPg++14.2.0	Success	18,675
Sep 3, 2026 05:21	Josu San Martin	CPPg++14.2.0	Success	20,886
Sep 3, 2026 05:15	Josu San Martin	CPPg++14.2.0	Success	3,622
Sep 3, 2026 05:12	Josu San Martin	CPPg++14.2.0	Success	3,599
Sep 3, 2026 05:10	Josu San Martin	CPPg++14.2.0	Success	10,870
Sep 3, 2026 05:08	Josu San Martin	CPPg++14.2.0	Success	11,034
Sep 3, 2026 05:05	Josu San Martin	CPPg++14.2.0	Success	3,602
Sep 3, 2026 05:02	Josu San Martin	CPPg++14.2.0	Success	11,092
Sep 3, 2026 04:59	Josu San Martin	CPPg++14.2.0	Success	3,620
Sep 3, 2026 04:56	Josu San Martin	CPPg++14.2.0	Success	11,673
Sep 3, 2026 04:53	Josu San Martin	CPPg++14.2.0	Success	3,738
Sep 3, 2026 04:46	Josu San Martin	CPPclang++20.1.2	Success	3,800
Sep 3, 2026 04:43	Josu San Martin	CPPg++14.2.0	Success	3,806
Sep 3, 2026 04:40	Josu San Martin	CPPg++14.2.0	Success	4,146
Sep 3, 2026 04:38	Josu San Martin	CPPg++14.2.0	Success	3,922
Sep 3, 2026 04:34	Josu San Martin	RUSTrust-1.95.0	Success	11,438
Sep 3, 2026 04:29	Josu San Martin	CPPg++14.2.0	Success	4,275
Sep 3, 2026 04:25	Josu San Martin	CPPg++14.2.0	Success	4,068
Sep 3, 2026 04:23	Josu San Martin	CPPg++14.2.0	Success	4,889
Sep 3, 2026 04:20	Josu San Martin	CPPg++14.2.0	Success	4,169
Sep 3, 2026 04:18	Josu San Martin	CPPg++14.2.0	Success	3,964
Sep 3, 2026 04:16	Josu San Martin	CPPg++14.2.0	Success	4,083
Sep 3, 2026 04:14	Josu San Martin	CPPg++14.2.0	Success	4,177
Sep 3, 2026 04:04	Josu San Martin	CPPg++14.2.0	Success	4,141
Sep 3, 2026 04:01	Josu San Martin	CPPg++14.2.0	Success	5,268
Sep 3, 2026 03:59	Josu San Martin	CPPg++14.2.0	Success	4,562
Sep 3, 2026 03:46	Josu San Martin	CPPg++14.2.0	Success	4,291
Sep 3, 2026 03:43	Josu San Martin	CPPg++14.2.0	Success	4,492
Sep 2, 2026 19:25	Josu San Martin	CPPg++14.2.0	Success	4,511+5.00 RP
Sep 2, 2026 11:22	Haha Expert	CSHARP9.0.19	Error
Sep 2, 2026 11:18	Haha Expert	CSHARP9.0.19	Error
Sep 2, 2026 10:45	Haha Expert	CSHARP9.0.19	Success	125,555
Sep 2, 2026 10:25	Haha Expert	CSHARP9.0.19	Success	126,028
Sep 2, 2026 10:16	Haha Expert	CSHARP9.0.19	Success	109,667+7.63 RP
Sep 2, 2026 10:12	Haha Expert	CSHARP9.0.19	Error
Sep 2, 2026 09:52	Haha Expert	CSHARP9.0.19	Success	124,695
Sep 2, 2026 09:26	Haha Expert	CSHARP9.0.19	Success	156,109
Sep 2, 2026 07:42	Haha Expert	CSHARP9.0.19	Success	150,101
Sep 2, 2026 07:35	Haha Expert	CSHARP9.0.19	Success	153,603+5.00 RP
Sep 1, 2026 14:46	Victor Mercklé	CPPg++14.2.0	Success	2,624
Sep 1, 2026 14:35	Victor Mercklé	CPPg++14.2.0	Success	2,626
Sep 1, 2026 14:34	Victor Mercklé	CSHARP10.0.7	Success	2,674+370.44 RP
Sep 1, 2026 14:31	Victor Mercklé	CPPg++14.2.0	Success	2,627
Sep 1, 2026 14:28	Victor Mercklé	CPPg++14.2.0	Success	2,643
Sep 1, 2026 14:24	Victor Mercklé	ZIG0.16.0	Success	2,635+84.49 RP
Sep 1, 2026 14:23	Victor Mercklé	RUSTrust-1.95.0	Success	2,637+146.54 RP
Sep 1, 2026 14:20	Victor Mercklé	GOgo1.26.2	Success	2,673+178.59 RP
Sep 1, 2026 14:19	Victor Mercklé	CPPg++14.2.0	Success	2,624+5.80 RP
Sep 1, 2026 14:13	Victor Mercklé	CPPg++14.2.0	Success	2,626+23.14 RP
Sep 1, 2026 14:08	Victor Mercklé	CSHARP10.0.7	Success	5,333
Sep 1, 2026 14:08	Victor Mercklé	CPPg++14.2.0	Success	2,640
Sep 1, 2026 14:04	Victor Mercklé	CPPg++14.2.0	Success	2,637
Sep 1, 2026 14:00	Victor Mercklé	CPPg++14.2.0	Success	3,066
Sep 1, 2026 13:54	Victor Mercklé	CPPg++14.2.0	Success	2,654
Sep 1, 2026 13:48	Victor Mercklé	CPPg++14.2.0	Success	2,634+17.26 RP
Sep 1, 2026 13:28	Victor Mercklé	CPPg++14.2.0	Success	5,304
Sep 1, 2026 13:25	Victor Mercklé	CPPg++14.2.0	Success	2,640+5.74 RP

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