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 1, 2026 10:16	Victor Mercklé	CPPg++14.2.0	Success	2,739
Sep 1, 2026 10:12	Victor Mercklé	CPPg++14.2.0	Success	2,760
Sep 1, 2026 10:01	Victor Mercklé	CPPg++14.2.0	Success	2,773
Sep 1, 2026 09:50	Victor Mercklé	CPPg++14.2.0	Success	5,425
Sep 1, 2026 06:07	Victor Mercklé	CPPg++14.2.0	Success	5,384
Sep 1, 2026 06:04	Victor Mercklé	CPPg++14.2.0	Success	5,498
Sep 1, 2026 05:59	Victor Mercklé	CPPg++14.2.0	Success	2,819
Sep 1, 2026 05:53	Victor Mercklé	CPPg++14.2.0	Success	5,739
Sep 1, 2026 05:46	Victor Mercklé	CPPg++14.2.0	Success	2,949
Sep 1, 2026 05:32	Victor Mercklé	CPPg++14.2.0	Success	5,440
Sep 1, 2026 04:18	Victor Mercklé	CPPg++14.2.0	Success	5,414
Aug 31, 2026 16:57	Victor Mercklé	CPPg++14.2.0	Success	2,871
Aug 31, 2026 16:40	Victor Mercklé	CPPg++14.2.0	Success	2,783
Aug 31, 2026 16:20	Victor Mercklé	CPPg++14.2.0	Success	2,750
Aug 31, 2026 15:34	Victor Mercklé	CPPg++14.2.0	Success	2,889
Aug 31, 2026 14:40	Victor Mercklé	CPPg++14.2.0	Success	2,748
Aug 31, 2026 14:22	Victor Mercklé	CPPg++14.2.0	Success	5,404
Aug 31, 2026 12:44	Victor Mercklé	CPPg++14.2.0	Success	5,363
Aug 31, 2026 12:40	Victor Mercklé	CPPg++14.2.0	Success	2,825
Aug 31, 2026 12:34	Victor Mercklé	CPPg++14.2.0	Success	5,414
Aug 31, 2026 12:20	Victor Mercklé	CPPg++14.2.0	Success	2,790
Aug 31, 2026 12:13	Victor Mercklé	CPPg++14.2.0	Success	2,754
Aug 31, 2026 12:07	Victor Mercklé	CPPg++14.2.0	Success	2,757
Aug 29, 2026 14:05	Victor Mercklé	CPPg++14.2.0	Success	2,743
Aug 29, 2026 14:02	Victor Mercklé	CPPg++14.2.0	Success	2,737+6.66 RP
Aug 29, 2026 13:59	Victor Mercklé	CPPg++14.2.0	Success	2,765
Aug 29, 2026 13:55	Victor Mercklé	CPPg++14.2.0	Success	5,383
Aug 29, 2026 13:52	Victor Mercklé	CPPg++14.2.0	Success	5,404
Aug 29, 2026 13:47	Victor Mercklé	CPPg++14.2.0	Success	2,819
Aug 29, 2026 13:45	Victor Mercklé	CPPg++14.2.0	Success	2,807
Aug 29, 2026 13:43	Victor Mercklé	CPPg++14.2.0	Success	5,351
Aug 29, 2026 13:37	Victor Mercklé	CPPg++14.2.0	Success	2,820
Aug 29, 2026 13:31	Victor Mercklé	CPPg++14.2.0	Success	2,799
Aug 29, 2026 13:27	Victor Mercklé	CPPg++14.2.0	Success	2,770
Aug 29, 2026 13:24	Victor Mercklé	CPPg++14.2.0	Success	5,397
Aug 29, 2026 13:22	Victor Mercklé	CPPg++14.2.0	Success	2,754
Aug 29, 2026 13:21	Victor Mercklé	CPPg++14.2.0	Success	2,769
Aug 29, 2026 13:18	Victor Mercklé	CPPg++14.2.0	Success	5,344
Aug 29, 2026 13:14	Victor Mercklé	CPPg++14.2.0	Success	5,378
Aug 29, 2026 13:13	Victor Mercklé	CPPg++14.2.0	Success	2,761
Aug 29, 2026 13:11	Victor Mercklé	CPPg++14.2.0	Success	2,752
Aug 29, 2026 13:06	Victor Mercklé	CPPg++14.2.0	Success	2,762
Aug 29, 2026 13:05	Victor Mercklé	CPPg++14.2.0	Success	2,756
Aug 29, 2026 12:59	Victor Mercklé	CPPg++14.2.0	Success	6,165
Aug 29, 2026 12:52	Victor Mercklé	CPPg++14.2.0	Success	2,822
Aug 29, 2026 12:48	Victor Mercklé	CPPg++14.2.0	Success	2,752
Aug 29, 2026 12:44	Victor Mercklé	CPPg++14.2.0	Error
Aug 29, 2026 12:39	Victor Mercklé	CPPg++14.2.0	Success	2,753
Aug 29, 2026 12:31	Victor Mercklé	CPPg++14.2.0	Success	5,390
Aug 29, 2026 12:26	Victor Mercklé	CPPg++14.2.0	Success	2,757
Aug 29, 2026 12:22	Victor Mercklé	CPPg++14.2.0	Success	2,770
Aug 29, 2026 12:19	Victor Mercklé	CPPg++14.2.0	Success	5,340
Aug 29, 2026 12:12	Victor Mercklé	CPPg++14.2.0	Success	2,762
Aug 29, 2026 12:08	Victor Mercklé	CPPg++14.2.0	Success	2,751
Aug 29, 2026 12:04	Victor Mercklé	CPPg++14.2.0	Success	5,371
Aug 29, 2026 12:00	Victor Mercklé	CPPg++14.2.0	Success	5,357
Aug 29, 2026 11:52	Victor Mercklé	CPPg++14.2.0	Success	5,361
Aug 29, 2026 11:45	Victor Mercklé	CPPg++14.2.0	Success	2,825
Aug 29, 2026 11:21	Victor Mercklé	CPPg++14.2.0	Success	2,781
Aug 29, 2026 11:13	Victor Mercklé	CPPg++14.2.0	Success	5,388
Aug 29, 2026 11:05	Victor Mercklé	CPPg++14.2.0	Success	5,376
Aug 29, 2026 10:57	Victor Mercklé	CPPclang++20.1.2	Success	2,839
Aug 29, 2026 10:34	Victor Mercklé	CPPg++14.2.0	Success	2,750
Aug 29, 2026 10:25	Victor Mercklé	CPPg++14.2.0	Success	2,742+6.64 RP
Aug 29, 2026 10:18	Victor Mercklé	CPPg++14.2.0	Success	2,815
Aug 29, 2026 10:15	Victor Mercklé	CPPg++14.2.0	Success	2,747+19.77 RP
Aug 29, 2026 10:05	Victor Mercklé	CPPg++14.2.0	Success	2,762
Aug 29, 2026 09:55	Victor Mercklé	CPPg++14.2.0	Success	5,356
Aug 29, 2026 09:47	Victor Mercklé	CPPg++14.2.0	Success	5,370
Aug 29, 2026 09:24	Victor Mercklé	CPPg++14.2.0	Success	5,465
Aug 29, 2026 09:10	Victor Mercklé	CPPg++14.2.0	Success	2,906
Aug 29, 2026 09:01	Victor Mercklé	CPPg++14.2.0	Success	2,869
Aug 29, 2026 08:52	Victor Mercklé	CPPg++14.2.0	Success	5,507
Aug 29, 2026 08:34	Victor Mercklé	CPPg++14.2.0	Success	30,774
Aug 27, 2026 11:19	Haha Expert	CSHARP9.0.15	Error
Aug 27, 2026 11:12	Haha Expert	CSHARP8.0.29	Error
Aug 23, 2026 22:05	Andrew Epstein	CPPg++14.2.0	Success	25,705+62.84 RP
Aug 23, 2026 19:42	Victor Mercklé	CPPg++14.2.0	Success	2,766
Aug 23, 2026 19:30	Victor Mercklé	CPPg++14.2.0	Success	5,697
Aug 23, 2026 19:20	Victor Mercklé	CPPg++14.2.0	Success	5,419
Aug 23, 2026 19:17	Victor Mercklé	CPPg++14.2.0	Success	5,417
Aug 23, 2026 19:14	Victor Mercklé	CPPg++14.2.0	Success	5,433
Aug 23, 2026 19:12	Victor Mercklé	CPPg++14.2.0	Success	5,444
Aug 23, 2026 19:09	Victor Mercklé	CPPg++14.2.0	Success	5,663
Aug 23, 2026 19:07	Victor Mercklé	CPPg++14.2.0	Success	3,146
Aug 23, 2026 19:04	Victor Mercklé	CPPg++14.2.0	Success	5,377
Aug 23, 2026 18:59	Victor Mercklé	CPPg++14.2.0	Success	5,444
Aug 23, 2026 18:50	Victor Mercklé	CPPg++14.2.0	Success	2,867
Aug 23, 2026 18:44	Victor Mercklé	CPPg++14.2.0	Success	5,364
Aug 23, 2026 18:34	Victor Mercklé	CPPg++14.2.0	Success	5,375
Aug 23, 2026 18:29	Victor Mercklé	CPPg++14.2.0	Success	2,809
Aug 23, 2026 18:25	Victor Mercklé	CPPg++14.2.0	Success	2,847
Aug 23, 2026 18:22	Victor Mercklé	CPPg++14.2.0	Success	2,787
Aug 23, 2026 18:18	Victor Mercklé	CPPg++14.2.0	Success	2,775
Aug 23, 2026 18:14	Victor Mercklé	CPPg++14.2.0	Success	2,904
Aug 23, 2026 18:12	Victor Mercklé	CPPg++14.2.0	Success	5,394
Aug 23, 2026 18:07	Victor Mercklé	CPPg++14.2.0	Success	2,905
Aug 23, 2026 18:04	Victor Mercklé	CPPg++14.2.0	Success	5,416
Aug 23, 2026 18:01	Victor Mercklé	CPPg++14.2.0	Success	5,510
Aug 23, 2026 17:59	Victor Mercklé	CPPg++14.2.0	Success	2,894

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