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
Oct 15, 2026 01:33	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 01:28	highload-churner	CPPclang++18.1.3	Success	2,493
Oct 15, 2026 01:25	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 01:18	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 01:13	highload-churner	CPPclang++18.1.3	Success	2,494
Oct 15, 2026 01:08	highload-churner	CPPclang++18.1.3	Success	2,495
Oct 15, 2026 01:01	highload-churner	CPPclang++18.1.3	Success	2,496
Oct 15, 2026 00:59	highload-churner	CPPclang++18.1.3	Success	2,503
Oct 15, 2026 00:56	highload-churner	CPPclang++18.1.3	Success	2,493+6.43 RP
Oct 15, 2026 00:46	highload-churner	CPPclang++18.1.3	Success	2,508
Oct 15, 2026 00:37	highload-churner	CPPclang++18.1.3	Success	2,497+1.60 RP
Oct 15, 2026 00:32	highload-churner	CPPclang++18.1.3	Success	2,506
Oct 15, 2026 00:28	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 15, 2026 00:19	highload-churner	CPPclang++18.1.3	Success	2,500
Oct 15, 2026 00:17	highload-churner	CPPclang++18.1.3	Success	2,500
Oct 15, 2026 00:13	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 13, 2026 14:49	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 13, 2026 14:48	highload-churner	CPPclang++18.1.3	Success	2,502
Oct 13, 2026 14:46	highload-churner	CPPclang++18.1.3	Success	2,498
Oct 13, 2026 14:36	highload-churner	CPPclang++18.1.3	Success	45,770
Oct 13, 2026 14:33	highload-churner	CPPclang++18.1.3	Success	67,320
Oct 13, 2026 14:29	highload-churner	CPPclang++18.1.3	Success	2,503
Oct 13, 2026 14:27	highload-churner	CPPclang++18.1.3	Success	2,498+1.60 RP
Oct 13, 2026 14:26	highload-churner	CPPclang++18.1.3	Success	2,499
Oct 13, 2026 14:23	highload-churner	CPPclang++18.1.3	Success	2,501
Oct 13, 2026 14:18	highload-churner	CPPclang++18.1.3	Success	68,171
Oct 13, 2026 14:13	highload-churner	CPPclang++18.1.3	Success	67,424
Oct 13, 2026 14:09	highload-churner	CPPclang++18.1.3	Success	47,766
Oct 13, 2026 14:06	highload-churner	CPPclang++18.1.3	Success	2,510
Oct 13, 2026 13:46	highload-churner	CPPclang++18.1.3	Success	120,443
Oct 13, 2026 13:38	highload-churner	CPPclang++18.1.3	Success	79,812
Oct 13, 2026 13:02	highload-churner	CPPclang++18.1.3	Success	2,502
Oct 13, 2026 12:59	highload-churner	CPPclang++18.1.3	Success	2,499+3.20 RP
Oct 13, 2026 12:56	highload-churner	CPPclang++18.1.3	Success	67,416
Oct 13, 2026 12:51	highload-churner	CPPclang++18.1.3	Success	469,994
Oct 13, 2026 12:46	highload-churner	CPPclang++18.1.3	Success	2,501+1.60 RP
Oct 13, 2026 12:35	highload-churner	CPPclang++18.1.3	Success	166,108
Oct 13, 2026 12:23	highload-churner	CPPclang++18.1.3	Success	67,452
Oct 13, 2026 12:13	highload-churner	CPPclang++18.1.3	Success	2,505
Oct 13, 2026 12:03	highload-churner	CPPclang++18.1.3	Success	42,793
Oct 13, 2026 11:57	highload-churner	CPPclang++18.1.3	Success	35,726
Oct 13, 2026 11:52	highload-churner	CPPclang++18.1.3	Success	2,502+12.74 RP
Oct 13, 2026 11:48	highload-churner	CPPclang++18.1.3	Success	2,865
Oct 13, 2026 10:53	highload-churner	CPPclang++18.1.3	Success	2,510+11.08 RP
Oct 13, 2026 09:24	highload-churner	CPPclang++18.1.3	Success	2,519
Oct 13, 2026 09:14	highload-churner	CPPclang++18.1.3	Success	2,580
Oct 13, 2026 09:03	highload-churner	CPPclang++18.1.3	Success	2,517+6.30 RP
Oct 13, 2026 08:54	highload-churner	CPPclang++18.1.3	Success	35,647
Oct 13, 2026 08:26	highload-churner	CPPclang++18.1.3	Success	2,521+1.57 RP
Oct 13, 2026 08:14	highload-churner	CPPclang++18.1.3	Success	2,522+37.38 RP
Oct 13, 2026 08:06	highload-churner	CPPclang++18.1.3	Success	16,994
Oct 13, 2026 06:13	highload-churner	CPPclang++18.1.3	Success	2,546
Oct 13, 2026 05:50	highload-churner	CPPclang++18.1.3	Success	2,546+83.05 RP
Oct 13, 2026 05:31	highload-churner	CPPclang++18.1.3	Success	7,382
Oct 13, 2026 05:25	highload-churner	CPPclang++18.1.3	Success	2,601+178.99 RP
Oct 13, 2026 00:49	highload-churner	CPPclang++18.1.3	Success	2,777
Oct 13, 2026 00:41	highload-churner	CPPclang++18.1.3	Success	2,734
Oct 13, 2026 00:35	highload-churner	CPPclang++18.1.3	Success	2,753
Oct 13, 2026 00:28	highload-churner	CPPclang++18.1.3	Success	2,728+659.98 RP
Oct 12, 2026 16:10	highload-churner	CPPclang++18.1.3	Error
Oct 12, 2026 16:00	highload-churner	CPPclang++18.1.3	Error
Oct 12, 2026 15:57	highload-churner	CPPclang++18.1.3	Error
Oct 12, 2026 15:53	highload-churner	CPPclang++18.1.3	Error
Oct 12, 2026 15:46	highload-churner	CPPclang++18.1.3	Error
Oct 12, 2026 15:41	highload-churner	CPPclang++18.1.3	Success	26,122
Oct 10, 2026 00:39	highload-churner	CPPclang++18.1.3	Success	3,360
Oct 9, 2026 23:50	highload-churner	CPPclang++18.1.3	Success	3,378
Oct 9, 2026 23:34	highload-churner	CPPclang++18.1.3	Success	3,327+70.58 RP
Oct 9, 2026 23:05	highload-churner	CPPclang++18.1.3	Success	3,509
Oct 9, 2026 22:21	highload-churner	CPPclang++18.1.3	Success	3,502
Oct 9, 2026 22:03	highload-churner	CPPclang++18.1.3	Success	3,407+68.98 RP
Oct 9, 2026 21:56	highload-churner	CPPclang++18.1.3	Success	3,614
Oct 9, 2026 21:56	highload-churner	CPPclang++18.1.3	Success	3,820
Oct 9, 2026 21:44	highload-churner	CPPclang++18.1.3	Success	3,499
Oct 9, 2026 21:33	janwww	CPPclang++20.1.2	Success	3,191+3'123.50 RP
Oct 9, 2026 21:22	highload-churner	CPPclang++18.1.3	Success	3,756
Oct 9, 2026 21:16	highload-churner	CPPclang++18.1.3	Success	3,489+200.20 RP
Oct 9, 2026 20:25	highload-churner	CPPclang++18.1.3	Success	3,886
Oct 9, 2026 20:17	highload-churner	CPPg++14.2.0	Success	4,210
Oct 9, 2026 17:36	highload-churner	CPPclang++18.1.3	Success	6,404
Oct 9, 2026 17:27	highload-churner	CPPclang++18.1.3	Success	3,751+81.98 RP
Oct 9, 2026 17:23	Karthik Reddy	GOgo1.26.2	Success	2,543
Oct 9, 2026 17:23	Karthik Reddy	ZIG0.15.1	Success	2,541
Oct 9, 2026 17:23	Karthik Reddy	RUSTrust-1.95.0	Success	2,539
Oct 9, 2026 17:18	highload-churner	CPPclang++18.1.3	Success	3,870+241.51 RP
Oct 9, 2026 16:35	highload-churner	CPPclang++18.1.3	Success	4,269+387.82 RP
Oct 9, 2026 16:35	highload-churner	CPPclang++18.1.3	Success	5,116+41.87 RP
Oct 9, 2026 15:41	Karthik Reddy	GOgo1.26.2	Success	2,545
Oct 9, 2026 15:41	Karthik Reddy	ZIG0.15.1	Success	2,540
Oct 9, 2026 15:41	Karthik Reddy	RUSTrust-1.95.0	Success	2,543
Oct 9, 2026 14:29	Karthik Reddy	GOgo1.26.2	Success	2,549
Oct 9, 2026 14:28	Karthik Reddy	ZIG0.15.1	Success	2,536
Oct 9, 2026 14:28	Karthik Reddy	RUSTrust-1.95.0	Success	2,540
Oct 9, 2026 13:32	Karthik Reddy	GOgo1.26.2	Success	2,542
Oct 9, 2026 13:31	Karthik Reddy	ZIG0.15.1	Success	2,538
Oct 9, 2026 13:31	Karthik Reddy	RUSTrust-1.95.0	Success	2,542
Oct 9, 2026 12:43	Karthik Reddy	GOgo1.26.2	Success	2,542
Oct 9, 2026 12:42	Karthik Reddy	ZIG0.15.1	Success	2,536
Oct 9, 2026 12:42	Karthik Reddy	RUSTrust-1.95.0	Success	2,537
Oct 9, 2026 11:39	Karthik Reddy	GOgo1.26.2	Success	2,544

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