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
Nov 8, 2026 13:08	janwww	CPPclang++18.1.3	Success	3,106
Nov 8, 2026 11:48	janwww	CPPg++14.2.0	Success	3,885
Nov 5, 2026 04:32	e1011	CPPg++14.2.0	Success	14,339
Nov 5, 2026 04:30	e1011	CPPclang++20.1.2	Success	13,954+13.06 RP
Nov 5, 2026 04:23	e1011	CPPg++14.2.0	Success	22,868
Nov 5, 2026 04:19	e1011	CPPg++14.2.0	Success	19,728
Nov 5, 2026 04:18	e1011	CPPg++10.5.0	Success	23,119
Nov 5, 2026 04:17	e1011	CPPg++10.5.0	Success	22,899
Nov 5, 2026 04:16	e1011	CPPg++10.5.0	Success	23,191
Nov 5, 2026 01:31	e1011	CPPg++10.5.0	Success	15,962
Nov 5, 2026 01:31	e1011	CPPg++10.5.0	Success	43,957
Nov 5, 2026 01:31	e1011	CPPg++10.5.0	Success	17,102
Nov 5, 2026 01:31	e1011	CPPg++10.5.0	Success	16,747
Nov 5, 2026 01:30	e1011	CPPg++10.5.0	Success	16,797
Nov 4, 2026 22:05	e1011	CPPg++10.5.0	Success	15,633
Nov 4, 2026 22:03	e1011	CPPg++10.5.0	Success	14,288
Nov 4, 2026 22:03	e1011	CPPg++10.5.0	Success	15,090
Nov 4, 2026 22:01	e1011	CPPg++10.5.0	Success	16,110
Nov 4, 2026 21:58	e1011	CPPg++10.5.0	Success	14,213+108.56 RP
Nov 4, 2026 21:56	e1011	CPPg++10.5.0	Error
Nov 4, 2026 21:54	e1011	CPPg++10.5.0	Error
Nov 4, 2026 21:41	e1011	CPPg++10.5.0	Success	17,811
Nov 4, 2026 21:39	e1011	CPPg++10.5.0	Success	17,983
Nov 4, 2026 21:39	e1011	CPPg++10.5.0	Success	18,299
Nov 4, 2026 21:39	e1011	CPPg++10.5.0	Success	17,018
Nov 4, 2026 21:38	e1011	CPPg++10.5.0	Success	17,071
Nov 4, 2026 21:38	e1011	CPPg++10.5.0	Success	16,806+37.64 RP
Nov 4, 2026 21:35	e1011	CPPg++10.5.0	Success	17,941+252.31 RP
Nov 4, 2026 20:50	e1011	CPPg++10.5.0	Success	32,779+89.38 RP
Nov 4, 2026 20:40	e1011	CPPg++10.5.0	Success	191,874
Nov 4, 2026 20:30	e1011	CPPg++10.5.0	Success	46,362+47.89 RP
Nov 4, 2026 20:06	e1011	CPPg++10.5.0	Success	59,592+36.19 RP
Nov 4, 2026 19:53	e1011	CPPg++10.5.0	Success	142,589
Nov 4, 2026 19:38	e1011	CPPg++10.5.0	Success	75,978+33.37 RP
Nov 4, 2026 19:38	e1011	CPPg++10.5.0	Success	112,353
Nov 4, 2026 19:35	e1011	CPPg++10.5.0	Success	130,852
Nov 4, 2026 19:25	e1011	CPPg++10.5.0	Success	130,481
Nov 4, 2026 19:11	e1011	CPPg++10.5.0	Success	112,218
Nov 4, 2026 19:08	e1011	CPPg++10.5.0	Success	123,191
Nov 4, 2026 19:06	e1011	CPPg++10.5.0	Success	125,280
Nov 4, 2026 18:59	e1011	CPPg++10.5.0	Error
Nov 4, 2026 18:55	e1011	CPPg++10.5.0	Error
Nov 4, 2026 18:40	e1011	CPPg++10.5.0	Success	109,350
Nov 4, 2026 18:27	e1011	CPPg++10.5.0	Error
Nov 4, 2026 04:53	e1011	CPPg++10.5.0	Success	120,784
Nov 4, 2026 04:51	e1011	CPPg++10.5.0	Success	129,546
Nov 4, 2026 04:42	e1011	CPPg++10.5.0	Success	161,629
Nov 4, 2026 04:31	e1011	CPPg++10.5.0	Success	109,302
Nov 4, 2026 04:27	e1011	CPPg++10.5.0	Error
Nov 4, 2026 04:23	e1011	CPPg++10.5.0	Success	141,261
Nov 4, 2026 04:22	e1011	CPPg++10.5.0	Error
Nov 4, 2026 04:09	e1011	CPPg++10.5.0	Error
Oct 26, 2026 19:35	Nico	RUSTrust-1.95.0	Success	6,212
Oct 26, 2026 07:50	e1011	CPPg++10.5.0	Success	101,783+68.27 RP
Oct 26, 2026 07:47	e1011	CPPg++10.5.0	Error
Oct 25, 2026 10:26	e1011	CPPg++10.5.0	Success	333,536+6.55 RP
Oct 21, 2026 14:46	e1011	CPPg++10.5.0	Success	426,789+23.43 RP
Oct 21, 2026 14:34	e1011	CPPg++10.5.0	Error
Oct 21, 2026 14:30	e1011	CPPg++10.5.0	Error
Oct 21, 2026 14:24	e1011	CPPg++10.5.0	Error
Oct 19, 2026 04:09	zayd-ansari-code	CPPg++10.5.0	Success	1,003,342+9.97 RP
Oct 17, 2026 09:08	Kacpxer	CPPg++10.5.0	Success	4,366+2'290.43 RP
Oct 16, 2026 22:35	janwww	ZIG0.15.1	Success	3,038+83.43 RP
Oct 16, 2026 20:58	janwww	RUSTrust-1.95.0	Success	3,117+74.40 RP
Oct 15, 2026 05:14	highload-churner	CPPclang++18.1.3	Success	2,491+4.83 RP
Oct 15, 2026 05:09	highload-churner	CPPclang++18.1.3	Success	2,498
Oct 15, 2026 05:03	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 05:00	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 04:55	highload-churner	CPPclang++18.1.3	Success	2,493
Oct 15, 2026 04:36	highload-churner	CPPclang++18.1.3	Success	24,058
Oct 15, 2026 04:21	highload-churner	CPPclang++18.1.3	Success	2,497
Oct 15, 2026 04:00	highload-churner	CPPclang++18.1.3	Success	2,494
Oct 15, 2026 03:55	highload-churner	CPPclang++18.1.3	Success	21,608
Oct 15, 2026 03:47	highload-churner	CPPclang++18.1.3	Success	2,497
Oct 15, 2026 03:43	highload-churner	CPPclang++18.1.3	Success	2,500
Oct 15, 2026 03:34	highload-churner	CPPclang++18.1.3	Success	2,504
Oct 15, 2026 03:34	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 03:22	highload-churner	CPPclang++18.1.3	Success	2,497
Oct 15, 2026 03:12	highload-churner	CPPclang++18.1.3	Success	2,493
Oct 15, 2026 03:05	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 03:02	highload-churner	CPPclang++18.1.3	Success	2,497
Oct 15, 2026 02:50	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 15, 2026 02:47	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 02:43	highload-churner	CPPclang++19.1.1	Success	2,496
Oct 15, 2026 02:41	highload-churner	CPPclang++18.1.3	Success	2,510
Oct 15, 2026 02:39	highload-churner	CPPclang++18.1.3	Success	2,503
Oct 15, 2026 02:33	highload-churner	CPPclang++18.1.3	Success	2,500
Oct 15, 2026 02:15	highload-churner	CPPclang++18.1.3	Success	2,497
Oct 15, 2026 02:15	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 15, 2026 02:15	highload-churner	CPPclang++18.1.3	Success	2,506
Oct 15, 2026 02:13	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 02:05	highload-churner	CPPclang++18.1.3	Success	16,911
Oct 15, 2026 02:01	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 01:58	highload-churner	CPPclang++18.1.3	Success	2,501
Oct 15, 2026 01:55	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 01:51	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 15, 2026 01:49	highload-churner	CPPclang++18.1.3	Success	2,504
Oct 15, 2026 01:39	highload-churner	CPPclang++18.1.3	Success	2,500
Oct 15, 2026 01:37	highload-churner	CPPclang++18.1.3	Success	2,504
Oct 15, 2026 01:35	highload-churner	CPPclang++18.1.3	Success	2,495

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