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
Jul 30, 2021 20:10	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 20:09	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 19:56	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 19:56	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 19:52	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 19:31	Prisyazhnyuk Alexander	GO	Error
Jul 30, 2021 19:29	Prisyazhnyuk Alexander	GO	Error
Jul 21, 2021 15:36	Mikhail Shirokov	CPP	Success	99,176
Jul 21, 2021 15:16	Mikhail Shirokov	CPP	Success	83,284+8.16 RP
Jul 21, 2021 15:14	Mikhail Shirokov	CPP	Success	90,321
Jul 21, 2021 15:14	Mikhail Shirokov	CPP	Success	114,446
Jul 21, 2021 15:11	Mikhail Shirokov	CPP	Success	976,151
Jul 21, 2021 14:59	Mikhail Shirokov	CPP	Error
Jul 15, 2021 22:34	Mikhail Shirokov	CPP	Success	96,512
Jul 9, 2021 13:34	Yuriy Lyfenko	GO	Error
Jul 8, 2021 21:08	Vitaliy F.	GO	Success	134,196+67.76 RP
Jul 8, 2021 21:07	Vitaliy F.	GO	Error
Jul 5, 2021 21:36	Vitaliy F.	GO	Error
Jul 5, 2021 21:34	Vitaliy F.	GO	Error
Jul 5, 2021 21:20	Vitaliy F.	GO	Error
Jul 4, 2021 22:22	Vitaliy F.	GO	Error
Jul 4, 2021 22:21	Vitaliy F.	GO	Error
Jul 4, 2021 22:18	Vitaliy F.	GO	Error
Jul 4, 2021 22:03	Vitaliy F.	GO	Error
Jul 4, 2021 22:02	Vitaliy F.	GO	Error
Jul 4, 2021 22:00	Vitaliy F.	GO	Error
Jul 4, 2021 21:31	Vitaliy F.	GO	Error
Jul 4, 2021 21:10	Vitaliy F.	GO	Error
Jul 4, 2021 09:49	Vitaliy F.	GO	Error
Jul 4, 2021 09:49	Vitaliy F.	GO	Error
Jul 4, 2021 09:48	Vitaliy F.	GO	Error
Jul 4, 2021 09:37	Vitaliy F.	GO	Success	1,480,551+6.75 RP
Jul 4, 2021 09:26	Vitaliy F.	GO	Error
Jul 4, 2021 01:49	Egor Sergeev	CPP	Success	109,426
Jul 4, 2021 01:42	Egor Sergeev	CPP	Success	125,858
Jul 4, 2021 01:21	Egor Sergeev	CPP	Success	84,733+4.10 RP
Jul 4, 2021 01:17	Egor Sergeev	CPP	Error
Jul 4, 2021 01:12	Egor Sergeev	CPP	Error
Jul 4, 2021 00:59	Egor Sergeev	CPP	Error
Jul 4, 2021 00:55	Egor Sergeev	CPP	Success	107,560
Jul 4, 2021 00:51	Egor Sergeev	CPP	Error
Jul 4, 2021 00:42	Egor Sergeev	CPP	Success	87,780+113.92 RP
Jun 29, 2021 20:24	alex3d	CPP	Success	177,372
Jun 29, 2021 19:59	alex3d	CPP	Success	194,637
Jun 29, 2021 19:57	alex3d	CPP	Success	190,135
Jun 29, 2021 19:49	alex3d	CPP	Success	172,135
Jun 29, 2021 19:44	alex3d	CPP	Success	194,290
Jun 29, 2021 19:43	alex3d	CPP	Success	177,299
Jun 29, 2021 19:39	alex3d	CPP	Success	193,951
Jun 29, 2021 15:54	alex3d	CPP	Success	192,620
Jun 29, 2021 15:48	alex3d	CPP	Success	177,604
Jun 29, 2021 15:39	alex3d	CPP	Success	193,094
Jun 29, 2021 15:22	alex3d	CPP	Success	173,280
Jun 29, 2021 15:15	alex3d	CPP	Success	184,737
Jun 28, 2021 18:15	alex3d	CPP	Success	183,036
Jun 28, 2021 18:13	alex3d	CPP	Success	189,629
Jun 28, 2021 18:11	alex3d	CPP	Success	196,211
Jun 28, 2021 18:04	alex3d	CPP	Success	169,880
Jun 28, 2021 18:02	alex3d	CPP	Success	144,670
Jun 27, 2021 20:30	alex3d	CPP	Success	138,855
Jun 27, 2021 20:26	alex3d	CPP	Success	140,260
Jun 27, 2021 20:25	alex3d	CPP	Error
Jun 27, 2021 19:50	alex3d	CPP	Success	136,271
Jun 27, 2021 19:47	alex3d	CPP	Success	133,766
Jun 27, 2021 18:54	gchebanov	CPP	Error
Jun 27, 2021 18:52	gchebanov	CPP	Error
Jun 27, 2021 18:52	gchebanov	CPP	Error
Jun 27, 2021 18:44	gchebanov	CPP	Success	32,587
Jun 27, 2021 18:23	gchebanov	CPP	Success	33,528
Jun 27, 2021 18:18	gchebanov	CPP	Success	31,625
Jun 27, 2021 18:16	gchebanov	CPP	Error
Jun 27, 2021 18:15	gchebanov	CPP	Error
Jun 27, 2021 18:13	gchebanov	CPP	Error
Jun 27, 2021 18:10	gchebanov	CPP	Success	29,993
Jun 27, 2021 18:08	gchebanov	CPP	Success	29,421+8.59 RP
Jun 27, 2021 18:08	gchebanov	CPP	Success	30,564
Jun 27, 2021 18:05	gchebanov	CPP	Error
Jun 27, 2021 18:05	gchebanov	CPP	Error
Jun 27, 2021 17:43	gchebanov	CPP	Success	47,272
Jun 27, 2021 17:43	gchebanov	CPP	Error
Jun 27, 2021 17:42	gchebanov	CPP	Success	47,739
Jun 27, 2021 17:25	gchebanov	CPP	Success	30,248
Jun 27, 2021 17:18	gchebanov	CPP	Success	30,184+19.89 RP
Jun 27, 2021 17:06	gchebanov	CPP	Success	32,112+5.10 RP
Jun 27, 2021 07:16	gchebanov	CPP	Success	32,647+220.99 RP
Jun 27, 2021 07:15	gchebanov	CPP	Success	117,208+85.32 RP
Jun 27, 2021 02:18	gchebanov	CPP	Error
Jun 27, 2021 02:12	gchebanov	CPP	Error
Jun 21, 2021 15:42	Dmitry Dolgopolov	CPP	Success	28,910+86.63 RP
Jun 21, 2021 15:41	Dmitry Dolgopolov	CPP	Error
Jun 21, 2021 15:27	Dmitry Dolgopolov	CPP	Success	39,104
Jun 21, 2021 07:35	Andrey Tsvetkov	GO	Error
Jun 21, 2021 07:08	Andrey Tsvetkov	GO	Error
Jun 21, 2021 07:07	Andrey Tsvetkov	GO	Error
Jun 21, 2021 07:05	Andrey Tsvetkov	GO	Error
Jun 21, 2021 07:03	Andrey Tsvetkov	GO	Error
Jun 21, 2021 06:58	Andrey Tsvetkov	GO	Error
Jun 21, 2021 06:57	Andrey Tsvetkov	GO	Error
Jun 21, 2021 06:53	Andrey Tsvetkov	GO	Error
Jun 21, 2021 06:49	Andrey Tsvetkov	GO	Error

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