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 12, 2026 08:01	Haha Expert	CPPg++14.2.0	Success	32,051+0.17 RP
Sep 12, 2026 07:58	Haha Expert	CPPg++14.2.0	Success	32,068+0.54 RP
Sep 12, 2026 07:55	Haha Expert	CPPg++14.2.0	Error
Sep 12, 2026 07:45	Haha Expert	CPPg++14.2.0	Success	54,410
Sep 12, 2026 07:43	Haha Expert	CPPg++14.2.0	Success	32,124+213.68 RP
Sep 12, 2026 07:40	Haha Expert	CPPg++14.2.0	Success	104,431
Sep 12, 2026 07:37	Haha Expert	CPPg++14.2.0	Success	102,442+3.12 RP
Sep 12, 2026 07:30	Haha Expert	CPPg++14.2.0	Success	105,821+8.31 RP
Sep 10, 2026 03:13	Andrew Epstein	CPPclang++20.1.2	Success	5,159+223.09 RP
Sep 10, 2026 03:07	Andrew Epstein	CPPclang++20.1.2	Success	5,830+1'180.05 RP
Sep 10, 2026 03:00	Andrew Epstein	CPPclang++20.1.2	Success	18,684+146.19 RP
Sep 9, 2026 13:37	Victor Mercklé	CPPg++14.2.0	Success	2,565
Sep 8, 2026 20:41	Victor Mercklé	CPPg++14.2.0	Success	2,749
Sep 8, 2026 20:35	Victor Mercklé	CPPg++14.2.0	Success	2,629
Sep 8, 2026 20:31	Victor Mercklé	CPPg++14.2.0	Success	2,674
Sep 8, 2026 20:29	Victor Mercklé	CPPg++14.2.0	Success	2,556+3.06 RP
Sep 8, 2026 20:26	Victor Mercklé	CPPg++14.2.0	Success	2,617
Sep 8, 2026 20:22	Victor Mercklé	CPPg++14.2.0	Success	2,617
Sep 8, 2026 20:14	Victor Mercklé	CPPg++14.2.0	Success	2,669
Sep 8, 2026 20:10	Victor Mercklé	CPPg++14.2.0	Success	2,626
Sep 8, 2026 20:03	Victor Mercklé	CPPg++14.2.0	Success	2,638
Sep 8, 2026 19:57	Victor Mercklé	CPPg++14.2.0	Success	2,630
Sep 8, 2026 19:51	Victor Mercklé	CPPg++14.2.0	Success	2,625
Sep 8, 2026 19:43	Victor Mercklé	CPPg++14.2.0	Success	2,655
Sep 8, 2026 19:32	Victor Mercklé	CPPg++14.2.0	Success	2,565
Sep 8, 2026 19:26	Victor Mercklé	CPPg++14.2.0	Success	2,658
Sep 8, 2026 19:20	Victor Mercklé	CPPg++14.2.0	Success	2,652
Sep 8, 2026 19:14	Victor Mercklé	CPPg++14.2.0	Success	2,647
Sep 8, 2026 19:02	Victor Mercklé	CPPg++14.2.0	Success	2,649
Sep 8, 2026 18:56	Victor Mercklé	CPPg++14.2.0	Success	2,567
Sep 8, 2026 18:51	Victor Mercklé	CPPg++14.2.0	Success	2,718
Sep 8, 2026 18:43	Victor Mercklé	CPPg++14.2.0	Success	2,562
Sep 8, 2026 18:26	Victor Mercklé	CPPg++14.2.0	Success	2,559
Sep 8, 2026 18:18	Victor Mercklé	CPPg++14.2.0	Success	2,568
Sep 8, 2026 18:07	Victor Mercklé	CPPg++14.2.0	Success	2,557+15.26 RP
Sep 8, 2026 18:00	Victor Mercklé	CPPg++14.2.0	Success	2,578
Sep 8, 2026 17:55	Victor Mercklé	CPPg++14.2.0	Success	2,628
Sep 8, 2026 17:43	Victor Mercklé	CPPg++14.2.0	Success	2,567
Sep 8, 2026 17:39	Victor Mercklé	CPPg++14.2.0	Success	2,586
Sep 8, 2026 17:22	Victor Mercklé	CPPg++14.2.0	Success	3,510
Sep 8, 2026 17:07	Victor Mercklé	CPPg++14.2.0	Success	2,575
Sep 8, 2026 16:53	Victor Mercklé	CPPg++14.2.0	Success	2,627
Sep 8, 2026 16:40	Victor Mercklé	CPPg++14.2.0	Success	2,666
Sep 8, 2026 16:24	Victor Mercklé	CPPg++14.2.0	Success	2,619
Sep 8, 2026 16:09	Victor Mercklé	CPPg++14.2.0	Success	2,643
Sep 8, 2026 15:57	Victor Mercklé	CPPg++14.2.0	Success	2,657
Sep 8, 2026 15:43	Victor Mercklé	CPPg++14.2.0	Success	2,659
Sep 8, 2026 15:32	Victor Mercklé	CPPg++14.2.0	Success	2,651
Sep 8, 2026 15:16	Victor Mercklé	CPPg++14.2.0	Success	5,363
Sep 8, 2026 15:00	Victor Mercklé	CPPg++14.2.0	Success	2,849
Sep 8, 2026 14:49	Victor Mercklé	CPPg++14.2.0	Success	2,563
Sep 8, 2026 14:32	Victor Mercklé	CPPg++14.2.0	Success	2,632
Sep 8, 2026 14:13	Victor Mercklé	CPPg++14.2.0	Success	2,638
Sep 8, 2026 13:53	Victor Mercklé	CPPg++14.2.0	Success	2,712
Sep 8, 2026 13:39	Victor Mercklé	CPPg++14.2.0	Success	2,573
Sep 8, 2026 13:23	Victor Mercklé	CPPg++14.2.0	Success	2,569
Sep 8, 2026 13:07	Victor Mercklé	CPPg++14.2.0	Success	2,638
Sep 8, 2026 13:01	Victor Mercklé	CPPg++14.2.0	Success	2,644
Sep 8, 2026 12:56	Victor Mercklé	CPPg++14.2.0	Success	2,645
Sep 8, 2026 12:48	Victor Mercklé	CPPg++14.2.0	Success	5,373
Sep 8, 2026 12:46	Victor Mercklé	CPPg++14.2.0	Success	2,563
Sep 8, 2026 12:40	Victor Mercklé	CPPg++14.2.0	Success	2,583
Sep 8, 2026 12:34	Victor Mercklé	CPPg++14.2.0	Success	2,562+21.28 RP
Sep 8, 2026 12:22	Victor Mercklé	CPPg++14.2.0	Success	2,569+72.06 RP
Sep 8, 2026 12:12	Victor Mercklé	CPPg++14.2.0	Success	3,087
Sep 8, 2026 12:04	Victor Mercklé	CPPg++14.2.0	Success	4,129
Sep 8, 2026 11:58	Victor Mercklé	CPPg++14.2.0	Success	2,645
Sep 8, 2026 11:55	Victor Mercklé	CPPg++14.2.0	Success	2,645
Sep 8, 2026 11:53	Victor Mercklé	CPPg++14.2.0	Success	2,637
Sep 8, 2026 11:46	Victor Mercklé	CPPg++14.2.0	Success	2,634
Sep 8, 2026 11:35	Victor Mercklé	CPPg++14.2.0	Success	2,630
Sep 8, 2026 11:32	Victor Mercklé	CPPg++14.2.0	Success	2,760
Sep 8, 2026 11:20	Victor Mercklé	CPPg++14.2.0	Success	2,598
Sep 8, 2026 11:11	Victor Mercklé	CPPg++14.2.0	Success	2,623
Sep 8, 2026 11:07	Victor Mercklé	CPPg++14.2.0	Success	2,864
Sep 8, 2026 11:01	Victor Mercklé	CPPg++14.2.0	Success	2,638
Sep 8, 2026 10:55	Victor Mercklé	CPPg++14.2.0	Success	2,708
Sep 8, 2026 10:51	Victor Mercklé	CPPg++14.2.0	Success	2,637
Sep 8, 2026 10:43	Victor Mercklé	CPPg++14.2.0	Success	2,779
Sep 8, 2026 10:37	Victor Mercklé	CPPg++14.2.0	Success	2,603
Sep 8, 2026 10:33	Victor Mercklé	CPPg++14.2.0	Success	2,599
Sep 8, 2026 10:28	Victor Mercklé	CPPg++14.2.0	Success	3,088
Sep 8, 2026 10:24	Victor Mercklé	CPPg++14.2.0	Success	2,932
Sep 8, 2026 10:14	Victor Mercklé	CPPg++14.2.0	Success	3,110
Sep 8, 2026 10:10	Victor Mercklé	CPPg++14.2.0	Success	2,650
Sep 8, 2026 10:03	Victor Mercklé	CPPg++14.2.0	Success	2,599
Sep 8, 2026 09:59	Victor Mercklé	CPPg++14.2.0	Success	2,653
Sep 8, 2026 09:43	Victor Mercklé	CPPg++14.2.0	Success	4,815
Sep 8, 2026 09:39	Victor Mercklé	CPPg++14.2.0	Success	2,621
Sep 8, 2026 09:32	Victor Mercklé	CPPg++14.2.0	Success	2,597
Sep 8, 2026 09:29	Victor Mercklé	CPPg++14.2.0	Success	2,602
Sep 8, 2026 09:25	Victor Mercklé	CPPg++14.2.0	Success	2,755
Sep 8, 2026 09:11	Victor Mercklé	CPPg++14.2.0	Success	2,602
Sep 8, 2026 09:00	Victor Mercklé	CPPg++14.2.0	Success	5,397
Sep 8, 2026 08:56	Victor Mercklé	CPPg++14.2.0	Success	2,729
Sep 8, 2026 08:47	Victor Mercklé	CPPg++14.2.0	Success	5,610
Sep 8, 2026 08:44	Victor Mercklé	CPPg++14.2.0	Success	2,903
Sep 8, 2026 08:40	Victor Mercklé	CPPg++14.2.0	Success	2,615
Sep 8, 2026 08:35	Victor Mercklé	CPPg++14.2.0	Success	2,611
Sep 8, 2026 08:31	Victor Mercklé	CPPg++14.2.0	Success	2,595

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