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
Jun 7, 2026 15:48	Victor Mercklé	CPPg++14.2.0	Success	4,773
Jun 7, 2026 15:37	Victor Mercklé	CPPg++14.2.0	Success	5,112
Jun 6, 2026 01:30	Victor Mercklé	CPPg++14.2.0	Success	3,423
Jun 6, 2026 01:19	Victor Mercklé	CPPg++14.2.0	Success	3,431
Jun 6, 2026 01:13	Victor Mercklé	CPPg++14.2.0	Success	3,445
Jun 6, 2026 01:08	Victor Mercklé	CPPg++14.2.0	Success	4,180
Jun 5, 2026 10:51	Ilya	CPPg++10.5.0	Success	1,002,329+14.98 RP
Jun 5, 2026 04:34	Victor Mercklé	CPPg++14.2.0	Success	3,423
Jun 5, 2026 04:29	Victor Mercklé	CPPg++14.2.0	Success	3,606
Jun 5, 2026 04:24	Victor Mercklé	CPPg++14.2.0	Success	3,442
Jun 5, 2026 04:19	Victor Mercklé	CPPg++14.2.0	Success	3,399+9.49 RP
Jun 5, 2026 04:14	Victor Mercklé	CPPg++14.2.0	Success	3,410+16.25 RP
Jun 5, 2026 04:09	Victor Mercklé	CPPg++14.2.0	Success	3,458
Jun 5, 2026 04:04	Victor Mercklé	CPPg++14.2.0	Success	3,437
Jun 5, 2026 03:59	Victor Mercklé	CPPg++14.2.0	Success	3,429+3.40 RP
Jun 5, 2026 03:53	Victor Mercklé	CPPg++14.2.0	Success	3,433+39.34 RP
Jun 5, 2026 03:48	Victor Mercklé	CPPg++14.2.0	Success	3,480+30.23 RP
Jun 5, 2026 03:43	Victor Mercklé	CPPg++14.2.0	Success	3,548+5.00 RP
May 25, 2026 14:52	Elijah Kin	CPPg++14.2.0	Success	82,505
May 25, 2026 14:47	Elijah Kin	CPPg++14.2.0	Success	76,708
May 25, 2026 14:45	Elijah Kin	CPPclang++20.1.2	Success	78,928
May 25, 2026 14:39	Elijah Kin	CPPclang++20.1.2	Success	65,148+0.60 RP
May 22, 2026 22:37	M-Rochat	CPPg++14.2.0	Success	22,311
May 22, 2026 22:34	M-Rochat	CPPg++13.3.0	Success	5,521+18.83 RP
May 22, 2026 22:31	M-Rochat	CPPclang++20.1.2	Success	5,885
May 22, 2026 22:28	M-Rochat	CPPclang++20.1.2	Success	16,676
May 22, 2026 22:25	M-Rochat	CPPclang++20.1.2	Success	17,347
May 22, 2026 22:21	M-Rochat	CPPclang++20.1.2	Success	5,579+445.82 RP
May 22, 2026 00:02	M-Rochat	CPPclang++20.1.2	Success	19,356
May 22, 2026 00:00	M-Rochat	CPPclang++20.1.2	Success	7,944
May 21, 2026 23:56	M-Rochat	CPPclang++20.1.2	Success	19,196
May 21, 2026 23:51	M-Rochat	CPPclang++20.1.2	Success	19,228
May 21, 2026 23:45	M-Rochat	CPPclang++20.1.2	Success	7,426+68.66 RP
May 21, 2026 23:43	M-Rochat	CPPclang++20.1.2	Success	18,980
May 21, 2026 23:39	M-Rochat	CPPclang++20.1.2	Success	18,243
May 21, 2026 23:33	M-Rochat	CPPclang++20.1.2	Success	7,825+0.33 RP
May 21, 2026 23:31	M-Rochat	CPPclang++20.1.2	Success	7,827+15.00 RP
May 21, 2026 23:28	M-Rochat	CPPg++13.3.0	Success	9,702
May 21, 2026 23:26	M-Rochat	CPPclang++20.1.2	Success	8,326
May 20, 2026 19:23	M-Rochat	CPPclang++20.1.2	Success	8,354
May 20, 2026 19:17	M-Rochat	CPPclang++20.1.2	Success	7,920+29.58 RP
May 20, 2026 19:16	M-Rochat	CPPclang++20.1.2	Success	9,875
May 20, 2026 19:15	M-Rochat	CPPclang++20.1.2	Success	8,110+222.23 RP
May 20, 2026 19:14	M-Rochat	CPPclang++20.1.2	Success	20,093
May 20, 2026 19:12	M-Rochat	CPPclang++20.1.2	Success	12,330
May 20, 2026 19:09	M-Rochat	CPPclang++20.1.2	Success	9,942
May 20, 2026 19:08	M-Rochat	CPPclang++20.1.2	Success	22,296
May 20, 2026 19:07	M-Rochat	CPPclang++20.1.2	Success	9,893+43.70 RP
May 20, 2026 19:03	M-Rochat	CPPclang++20.1.2	Success	20,402
May 20, 2026 19:02	M-Rochat	CPPclang++20.1.2	Error
May 20, 2026 19:01	M-Rochat	CPPclang++20.1.2	Error
May 20, 2026 18:59	M-Rochat	CPPclang++20.1.2	Error
May 18, 2026 16:15	M-Rochat	CPPclang++20.1.2	Success	25,207
May 18, 2026 16:15	M-Rochat	CPPclang++20.1.2	Success	24,018
May 18, 2026 03:55	M-Rochat	CPPclang++20.1.2	Success	22,396
May 18, 2026 03:55	M-Rochat	CPPclang++20.1.2	Success	22,440
May 18, 2026 03:55	M-Rochat	CPPclang++20.1.2	Success	22,050
May 17, 2026 15:10	M-Rochat	CPPclang++20.1.2	Success	10,351
May 17, 2026 15:08	M-Rochat	CPPclang++18.1.3	Success	11,209
May 17, 2026 08:29	M-Rochat	CPPclang++20.1.2	Success	22,341
May 17, 2026 08:15	M-Rochat	CPPclang++20.1.2	Success	10,684
May 17, 2026 04:27	M-Rochat	CPPclang++20.1.2	Success	22,192
May 17, 2026 04:27	M-Rochat	CPPclang++20.1.2	Success	10,340+1.03 RP
May 17, 2026 04:27	M-Rochat	CPPclang++20.1.2	Success	10,812
May 17, 2026 04:05	M-Rochat	CPPclang++20.1.2	Success	11,506
May 17, 2026 04:05	M-Rochat	CPPclang++20.1.2	Success	11,072
May 17, 2026 04:05	M-Rochat	CPPclang++20.1.2	Success	10,351+47.56 RP
May 17, 2026 04:02	M-Rochat	CPPclang++20.1.2	Success	12,177+46.09 RP
May 17, 2026 04:02	M-Rochat	CPPclang++20.1.2	Success	21,959
May 17, 2026 04:02	M-Rochat	CPPclang++20.1.2	Success	10,887+97.31 RP
May 17, 2026 04:01	M-Rochat	CPPclang++20.1.2	Success	21,832
May 17, 2026 03:59	M-Rochat	CPPclang++20.1.2	Error
May 17, 2026 02:28	M-Rochat	CPPclang++20.1.2	Success	17,550
May 17, 2026 02:27	M-Rochat	CPPclang++20.1.2	Success	17,973
May 17, 2026 02:26	M-Rochat	CPPclang++20.1.2	Success	14,072
May 17, 2026 02:26	M-Rochat	CPPclang++20.1.2	Success	12,901+2.81 RP
May 17, 2026 00:26	M-Rochat	CPPclang++20.1.2	Success	17,425
May 17, 2026 00:23	M-Rochat	CPPclang++20.1.2	Success	12,948+26.94 RP
May 16, 2026 22:53	M-Rochat	CPPclang++20.1.2	Success	17,113
May 16, 2026 22:53	M-Rochat	CPPclang++20.1.2	Success	17,615
May 16, 2026 22:46	M-Rochat	CPPclang++20.1.2	Success	13,416+12.46 RP
May 16, 2026 21:45	M-Rochat	CPPclang++20.1.2	Success	17,444
May 16, 2026 20:00	M-Rochat	CPPclang++20.1.2	Success	23,441
May 16, 2026 20:00	M-Rochat	CPPclang++20.1.2	Success	19,150
May 16, 2026 19:59	M-Rochat	CPPclang++20.1.2	Success	13,644+0.38 RP
May 16, 2026 19:55	M-Rochat	CPPclang++20.1.2	Success	13,651+181.80 RP
May 16, 2026 19:48	M-Rochat	CPPclang++20.1.2	Success	18,157+201.80 RP
May 16, 2026 15:47	M-Rochat	CPPg++13.3.0	Error
May 16, 2026 07:21	M-Rochat	CPPg++14.2.0	Success	31,960
May 16, 2026 07:21	M-Rochat	CPPclang++20.1.2	Success	28,657+8.01 RP
May 16, 2026 07:18	M-Rochat	CPPclang++20.1.2	Success	29,330+32.50 RP
May 16, 2026 07:16	M-Rochat	CPPg++13.3.0	Success	32,420+216.94 RP
May 15, 2026 19:36	M-Rochat	CPPclang++18.1.3	Success	109,276+91.51 RP
May 15, 2026 00:48	zielaj	CPPclang++18.1.3	Success	2,700+231.24 RP
May 15, 2026 00:44	zielaj	CPPclang++18.1.3	Success	5,136
May 15, 2026 00:42	zielaj	CPPclang++18.1.3	Success	5,135
May 15, 2026 00:37	zielaj	CPPclang++18.1.3	Error
May 14, 2026 16:49	Josu San Martin	GOgo1.25.5	Success	40,188
May 11, 2026 22:56	Victor Mercklé	CPPg++14.2.0	Success	12,748
May 11, 2026 22:12	Victor Mercklé	CPPg++14.2.0	Success	3,617

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