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
Jun 23, 2026 21:39	Victor Mercklé	CPPg++14.2.0	Success	11,966
Jun 23, 2026 21:34	Victor Mercklé	CPPg++14.2.0	Success	3,133
Jun 23, 2026 21:29	Victor Mercklé	CPPg++14.2.0	Success	11,947
Jun 23, 2026 21:24	Victor Mercklé	CPPg++14.2.0	Success	3,117
Jun 23, 2026 21:19	Victor Mercklé	CPPg++14.2.0	Success	3,080+16.78 RP
Jun 23, 2026 21:14	Victor Mercklé	CPPg++14.2.0	Success	11,994
Jun 23, 2026 21:09	Victor Mercklé	CPPg++14.2.0	Success	11,944
Jun 23, 2026 21:04	Victor Mercklé	CPPg++14.2.0	Success	3,112
Jun 23, 2026 20:57	Victor Mercklé	CPPg++14.2.0	Success	3,101
Jun 23, 2026 17:13	Victor Mercklé	CPPg++14.2.0	Success	3,115
Jun 23, 2026 17:08	Victor Mercklé	CPPg++14.2.0	Success	12,147
Jun 23, 2026 17:03	Victor Mercklé	CPPg++14.2.0	Success	3,151
Jun 23, 2026 16:58	Victor Mercklé	CPPg++14.2.0	Success	3,134
Jun 23, 2026 16:53	Victor Mercklé	CPPg++14.2.0	Success	3,096+97.14 RP
Jun 23, 2026 16:47	Victor Mercklé	CPPg++14.2.0	Success	3,213
Jun 23, 2026 16:42	Victor Mercklé	CPPg++14.2.0	Success	3,251
Jun 23, 2026 16:37	Victor Mercklé	CPPg++14.2.0	Success	3,209
Jun 23, 2026 16:32	Victor Mercklé	CPPg++14.2.0	Success	3,192+25.31 RP
Jun 23, 2026 16:27	Victor Mercklé	CPPg++14.2.0	Success	3,276
Jun 23, 2026 14:17	Victor Mercklé	CPPg++14.2.0	Success	9,489
Jun 23, 2026 14:12	Victor Mercklé	CPPg++14.2.0	Success	9,461
Jun 23, 2026 14:07	Victor Mercklé	CPPg++14.2.0	Success	3,218+0.97 RP
Jun 23, 2026 14:02	Victor Mercklé	CPPg++14.2.0	Success	3,244
Jun 23, 2026 13:52	Victor Mercklé	CPPg++14.2.0	Success	3,227
Jun 23, 2026 13:47	Victor Mercklé	CPPg++14.2.0	Success	3,219+2.89 RP
Jun 23, 2026 13:42	Victor Mercklé	CPPg++14.2.0	Success	3,232
Jun 23, 2026 13:37	Victor Mercklé	CPPg++14.2.0	Success	12,041
Jun 22, 2026 23:05	Victor Mercklé	CPPg++14.2.0	Success	3,222+21.05 RP
Jun 22, 2026 23:00	Victor Mercklé	CPPg++14.2.0	Success	3,304
Jun 22, 2026 22:55	Victor Mercklé	CPPg++14.2.0	Success	3,244+70.57 RP
Jun 22, 2026 22:50	Victor Mercklé	CPPg++14.2.0	Success	3,320+27.86 RP
Jun 22, 2026 22:45	Victor Mercklé	CPPg++14.2.0	Success	3,612
Jun 22, 2026 22:27	Victor Mercklé	CPPg++14.2.0	Success	10,545
Jun 22, 2026 02:29	Victor Mercklé	CPPg++14.2.0	Success	3,401
Jun 22, 2026 02:24	Victor Mercklé	CPPg++14.2.0	Success	3,407
Jun 22, 2026 02:19	Victor Mercklé	CPPg++14.2.0	Success	3,373
Jun 22, 2026 02:14	Victor Mercklé	CPPg++14.2.0	Success	3,411
Jun 22, 2026 02:00	Victor Mercklé	CPPg++14.2.0	Success	10,519
Jun 22, 2026 01:54	Victor Mercklé	CPPg++14.2.0	Success	6,503+5.00 RP
Jun 21, 2026 19:28	A_Shaman	CPPg++10.5.0	Success	74,814
Jun 21, 2026 19:25	A_Shaman	CPPg++10.5.0	Success	36,342
Jun 21, 2026 19:22	A_Shaman	CPPg++10.5.0	Success	34,721+11.16 RP
Jun 21, 2026 19:19	A_Shaman	CPPg++10.5.0	Success	36,120+10.32 RP
Jun 21, 2026 19:16	A_Shaman	CPPg++10.5.0	Success	49,824
Jun 21, 2026 19:13	A_Shaman	CPPg++10.5.0	Success	50,622
Jun 21, 2026 19:11	A_Shaman	CPPg++10.5.0	Success	37,626
Jun 21, 2026 19:09	A_Shaman	CPPg++10.5.0	Success	38,648
Jun 21, 2026 11:01	Victor Mercklé	CPPg++14.2.0	Success	3,443
Jun 21, 2026 10:53	Victor Mercklé	CPPg++14.2.0	Success	11,536
Jun 20, 2026 18:13	A_Shaman	CPPg++10.5.0	Success	124,402
Jun 20, 2026 18:10	A_Shaman	CPPg++10.5.0	Success	70,278
Jun 20, 2026 18:08	A_Shaman	CPPg++10.5.0	Success	45,177
Jun 20, 2026 18:06	A_Shaman	CPPg++10.5.0	Success	52,722
Jun 20, 2026 18:03	A_Shaman	CPPg++10.5.0	Success	37,518+266.54 RP
Jun 20, 2026 07:46	A_Shaman	CPPg++10.5.0	Error
Jun 19, 2026 17:44	Victor Mercklé	CPPg++14.2.0	Success	3,464
Jun 19, 2026 17:39	Victor Mercklé	CPPg++14.2.0	Success	3,434
Jun 19, 2026 17:34	Victor Mercklé	CPPg++14.2.0	Success	3,392
Jun 19, 2026 17:28	Victor Mercklé	CPPg++14.2.0	Success	3,379
Jun 19, 2026 17:23	Victor Mercklé	CPPg++14.2.0	Success	3,362
Jun 18, 2026 16:03	Maya Rebholz	CPPg++10.5.0	Success	11,211
Jun 18, 2026 15:57	Maya Rebholz	CPPg++10.5.0	Success	10,397
Jun 18, 2026 15:44	Maya Rebholz	CPPg++10.5.0	Success	10,195
Jun 18, 2026 15:32	Maya Rebholz	CPPg++10.5.0	Success	13,873
Jun 18, 2026 15:18	Maya Rebholz	CPPg++10.5.0	Success	14,964
Jun 17, 2026 19:03	Maya Rebholz	CPPg++10.5.0	Success	10,259
Jun 17, 2026 18:33	Maya Rebholz	CPPg++10.5.0	Success	11,608
Jun 17, 2026 16:40	Maya Rebholz	CPPg++10.5.0	Success	9,779
Jun 17, 2026 16:35	Maya Rebholz	CPPg++10.5.0	Success	13,690
Jun 17, 2026 16:16	Maya Rebholz	CPPg++10.5.0	Success	11,291
Jun 17, 2026 16:14	Maya Rebholz	CPPg++10.5.0	Error
Jun 17, 2026 15:39	Maya Rebholz	CPPg++10.5.0	Success	9,705
Jun 17, 2026 15:27	Maya Rebholz	CPPg++10.5.0	Success	9,705
Jun 17, 2026 15:23	Maya Rebholz	CPPg++10.5.0	Success	10,418
Jun 17, 2026 15:17	Maya Rebholz	CPPg++10.5.0	Success	9,699+183.29 RP
Jun 17, 2026 15:07	Maya Rebholz	CPPg++10.5.0	Success	12,017
Jun 17, 2026 15:05	Maya Rebholz	CPPg++10.5.0	Success	11,796+33.61 RP
Jun 17, 2026 15:02	Maya Rebholz	CPPg++10.5.0	Success	12,283+28.09 RP
Jun 17, 2026 14:56	Maya Rebholz	CPPg++10.5.0	Success	12,722+407.34 RP
Jun 16, 2026 20:19	Maya Rebholz	CPPg++10.5.0	Success	48,868
Jun 16, 2026 20:14	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:33	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:32	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:30	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:29	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:28	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:26	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:20	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 19:17	Maya Rebholz	CPPg++10.5.0	Success	34,489
Jun 16, 2026 19:03	Maya Rebholz	CPPg++10.5.0	Success	37,326
Jun 16, 2026 19:02	Maya Rebholz	CPPg++10.5.0	Success	46,514
Jun 16, 2026 18:56	Maya Rebholz	CPPg++10.5.0	Success	45,139
Jun 16, 2026 18:54	Maya Rebholz	CPPg++10.5.0	Success	103,031
Jun 16, 2026 18:38	Maya Rebholz	CPPg++10.5.0	Success	26,406+1.64 RP
Jun 16, 2026 16:11	Maya Rebholz	CPPg++10.5.0	Success	26,521+59.30 RP
Jun 16, 2026 16:10	Maya Rebholz	CPPg++10.5.0	Error
Jun 16, 2026 15:59	Maya Rebholz	CPPg++10.5.0	Success	31,485
Jun 16, 2026 15:58	Maya Rebholz	CPPg++10.5.0	Success	31,706
Jun 16, 2026 15:55	Maya Rebholz	CPPg++10.5.0	Success	31,470+1.13 RP
Jun 16, 2026 15:54	Maya Rebholz	CPPg++10.5.0	Success	31,582+9.59 RP

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