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	1:20.1.2-0ubuntu1~24.04.2	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.
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	3.0.13-0ubuntu3.9	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
May 1, 2026 15:07	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Success	900,762+11.10 RP
May 1, 2026 15:06	Mehdi-Dehghan-Fooladi	CPPg++14.2.0	Error
May 1, 2026 14:32	Pavel Skripkin	RUSTrust-1.95.0	Success	39,507+68.80 RP
May 1, 2026 14:15	Pavel Skripkin	RUSTrust-1.95.0	Success	54,986
May 1, 2026 13:41	Pavel Skripkin	RUSTrust-1.95.0	Success	54,255+89.19 RP
May 1, 2026 12:40	Pavel Skripkin	RUSTrust-1.95.0	Success	105,128+95.12 RP
May 1, 2026 11:38	Victor Mercklé	CPPg++14.2.0	Success	14,946
May 1, 2026 10:41	Victor Mercklé	CPPg++14.2.0	Success	66,372
May 1, 2026 09:58	Victor Mercklé	CPPg++14.2.0	Success	14,220
May 1, 2026 05:21	Charles Cabergs	CPPg++13.3.0	Success	8,959
Apr 30, 2026 23:21	Charles Cabergs	CPPg++13.3.0	Success	4,739
Apr 30, 2026 20:48	Charles Cabergs	CPPg++13.3.0	Success	4,736+5.00 RP
Apr 30, 2026 12:18	olliecrow	CPPg++10.5.0	Success	24,151
Apr 30, 2026 10:38	Victor Mercklé	CPPg++14.2.0	Success	11,138+581.77 RP
Apr 30, 2026 09:31	Victor Mercklé	CPPg++14.2.0	Success	112,680
Apr 30, 2026 09:13	Victor Mercklé	CPPg++14.2.0	Success	91,289
Apr 30, 2026 09:06	Victor Mercklé	CPPg++14.2.0	Success	36,284
Apr 30, 2026 08:49	Victor Mercklé	CPPg++14.2.0	Success	82,524
Apr 30, 2026 08:20	Victor Mercklé	CPPg++14.2.0	Success	36,040
Apr 30, 2026 08:06	Victor Mercklé	CPPg++14.2.0	Success	87,645
Apr 30, 2026 07:44	Victor Mercklé	CPPg++14.2.0	Success	79,956
Apr 30, 2026 07:28	Victor Mercklé	CPPg++14.2.0	Success	77,853+5.00 RP
Apr 30, 2026 07:08	olliecrow	CPPg++10.5.0	Success	23,758
Apr 30, 2026 06:09	olliecrow	CPPg++10.5.0	Success	24,787
Apr 30, 2026 03:10	olliecrow	CPPg++10.5.0	Success	25,427+5.00 RP
Apr 29, 2026 22:47	olliecrow	CPPg++10.5.0	Success	24,072
Apr 29, 2026 16:06	Charles Cabergs	CPPg++13.3.0	Success	4,735
Apr 29, 2026 14:32	olliecrow	CPPg++10.5.0	Success	3,339
Apr 29, 2026 13:56	TudyM	CPPclang++18.1.3	Success	17,487
Apr 29, 2026 13:53	TudyM	CPPg++14.2.0	Success	20,381
Apr 29, 2026 13:50	TudyM	CPPclang++18.1.3	Success	17,532
Apr 29, 2026 13:48	TudyM	CPPclang++18.1.3	Success	17,329+4.56 RP
Apr 29, 2026 13:45	TudyM	CPPclang++20.1.2	Success	17,542
Apr 29, 2026 13:40	TudyM	CPPclang++18.1.3	Success	104,881
Apr 29, 2026 13:36	TudyM	CPPclang++18.1.3	Success	17,473
Apr 29, 2026 13:33	TudyM	CPPclang++18.1.3	Success	124,307
Apr 29, 2026 07:27	olliecrow	CPPg++10.5.0	Success	25,366
Apr 29, 2026 07:25	olliecrow	CPPg++10.5.0	Success	23,775
Apr 29, 2026 07:15	olliecrow	CPPg++10.5.0	Success	3,315
Apr 29, 2026 06:24	olliecrow	CPPg++10.5.0	Success	23,839
Apr 29, 2026 05:21	Charles Cabergs	CPPg++13.3.0	Success	9,598
Apr 29, 2026 02:58	olliecrow	CPPclang++18.1.3	Success	20,310
Apr 29, 2026 01:51	olliecrow	CPPclang++18.1.3	Success	23,019
Apr 29, 2026 00:41	olliecrow	CPPg++10.5.0	Success	3,457
Apr 28, 2026 23:35	olliecrow	CPPg++10.5.0	Success	23,769
Apr 28, 2026 21:37	olliecrow	CPPg++10.5.0	Success	3,419
Apr 28, 2026 20:27	olliecrow	CPPclang++18.1.3	Success	23,875
Apr 28, 2026 19:30	olliecrow	CPPg++10.5.0	Success	3,797
Apr 28, 2026 08:52	Victor Mercklé	CPPg++14.2.0	Success	32,221
Apr 28, 2026 01:03	Charles Cabergs	CPPg++12.4.0	Success	9,951
Apr 27, 2026 22:41	TudyM	CPPclang++18.1.3	Success	17,484
Apr 27, 2026 22:36	TudyM	CPPclang++18.1.3	Success	24,707
Apr 27, 2026 22:31	TudyM	CPPclang++18.1.3	Success	24,700
Apr 27, 2026 22:27	TudyM	CPPclang++18.1.3	Success	19,274
Apr 27, 2026 22:18	TudyM	CPPclang++18.1.3	Success	17,467+0.26 RP
Apr 27, 2026 22:12	TudyM	CPPclang++18.1.3	Success	21,122
Apr 27, 2026 22:07	TudyM	CPPclang++18.1.3	Success	17,475+0.82 RP
Apr 27, 2026 22:01	TudyM	CPPclang++18.1.3	Success	17,508
Apr 27, 2026 21:56	TudyM	CPPclang++18.1.3	Success	17,500+1.73 RP
Apr 27, 2026 21:51	TudyM	CPPclang++20.1.2	Success	28,256
Apr 27, 2026 21:47	TudyM	CPPclang++20.1.2	Success	19,362
Apr 27, 2026 21:43	TudyM	CPPclang++20.1.2	Success	27,669
Apr 27, 2026 21:10	Victor Mercklé	CPPg++14.2.0	Success	31,640+187.49 RP
Apr 27, 2026 21:01	Victor Mercklé	CPPg++14.2.0	Success	77,781+93.30 RP
Apr 27, 2026 20:53	Victor Mercklé	CPPg++14.2.0	Success	283,522+35.27 RP
Apr 27, 2026 20:48	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 13:34	Charles Cabergs	CPPg++13.3.0	Success	9,594
Apr 27, 2026 06:01	olliecrow	CPPclang++18.1.3	Success	27,610
Apr 27, 2026 05:59	olliecrow	CPPg++10.5.0	Success	3,381
Apr 26, 2026 20:05	TudyM	CPPclang++20.1.2	Success	17,553+176.06 RP
Apr 26, 2026 20:03	TudyM	CPPg++14.2.0	Success	25,503
Apr 26, 2026 18:29	TudyM	CPPg++10.5.0	Success	41,954
Apr 26, 2026 18:28	TudyM	CPPg++10.5.0	Success	25,404+82.16 RP
Apr 26, 2026 18:26	TudyM	CPPg++10.5.0	Success	32,105+152.82 RP
Apr 26, 2026 17:54	TudyM	CPPg++10.5.0	Success	63,027+59.67 RP
Apr 26, 2026 17:07	TudyM	CPPg++10.5.0	Success	101,015+99.00 RP
Apr 26, 2026 15:27	olliecrow	CSHARP9.0.15	Error
Apr 26, 2026 15:16	olliecrow	CPPg++10.5.0	Success	23,782
Apr 26, 2026 04:20	olliecrow	CPPclang++18.1.3	Success	23,447
Apr 26, 2026 03:40	olliecrow	CSHARP9.0.15	Success	35,305
Apr 26, 2026 02:25	olliecrow	CSHARP9.0.15	Error
Apr 26, 2026 01:19	Charles Cabergs	CPPg++13.3.0	Success	9,622
Apr 25, 2026 22:45	olliecrow	CPPclang++18.1.3	Success	3,524
Apr 25, 2026 22:40	olliecrow	CPPclang++18.1.3	Success	23,283
Apr 25, 2026 19:46	Charles Cabergs	CPPg++14.2.0	Success	4,739
Apr 25, 2026 18:27	olliecrow	CPPclang++18.1.3	Success	3,632
Apr 25, 2026 18:24	olliecrow	CPPg++10.5.0	Success	3,486
Apr 25, 2026 14:40	olliecrow	CPPg++10.5.0	Success	20,736
Apr 25, 2026 13:56	olliecrow	CSHARP9.0.15	Error
Apr 25, 2026 12:30	olliecrow	CPPg++10.5.0	Success	3,472
Apr 25, 2026 11:29	olliecrow	CSHARP9.0.15	Success	35,318
Apr 25, 2026 08:44	limanjun99	CPPg++14.2.0	Success	4,540
Apr 25, 2026 08:28	limanjun99	CPPg++14.2.0	Success	4,031+31.59 RP
Apr 25, 2026 08:18	limanjun99	CPPg++14.2.0	Success	4,083+19.64 RP
Apr 25, 2026 08:16	limanjun99	CPPg++14.2.0	Error
Apr 25, 2026 08:15	limanjun99	CPPg++14.2.0	Success	4,135
Apr 25, 2026 08:12	limanjun99	CPPg++14.2.0	Error
Apr 25, 2026 08:09	limanjun99	CPPg++14.2.0	Error
Apr 25, 2026 08:04	limanjun99	CPPg++14.2.0	Success	4,116+23.38 RP
Apr 25, 2026 08:03	limanjun99	CPPg++14.2.0	Error

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