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.

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Run Statistics

#	Date	Score	Wall Time	CPU User	Memory	Error
1	May 29, 2024 23:30	0	0	0	0	Error: expected "2197821049 ", got "0"	stderr
2	May 29, 2024 23:28	0	0	0	0	Error: expected "2367698623 ", got "3062712466"	stderr
3	May 29, 2024 23:28	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
4	May 29, 2024 23:29	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
5	May 29, 2024 23:29	0	0	0	0	Error: No answer to stdout. Died or killed?
6	May 29, 2024 23:29	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
7	May 29, 2024 23:29	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
8	May 29, 2024 23:29	0	0	0	0	Error: No answer to stdout. Died or killed?
9	May 29, 2024 23:30	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
10	May 29, 2024 23:28	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
11	May 29, 2024 23:30	0	0	0	0	Error: expected "2283256004 ", got "3250641197"	stderr
12	May 29, 2024 23:31	0	0	0	0	Error: No answer to stdout. Died or killed?
13	May 29, 2024 23:32	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
14	May 29, 2024 23:32	0	0	0	0	Error: expected "2190033338 ", got "0"	stderr
15	May 29, 2024 23:32	0	0	0	0	Error: expected "2217724660 ", got "2202457421"	stderr
16	May 29, 2024 23:32	0	0	0	0	Error: expected "2241984728 ", got "3318948930"	stderr
17	May 29, 2024 23:32	0	0	0	0	Error: expected "2275118643 ", got "4226656602"	stderr
18	May 29, 2024 23:32	0	0	0	0	Error: expected "2212797222 ", got "1670313381"	stderr
19	May 29, 2024 23:28	0	0	0	0	Error: No answer to stdout. Died or killed?
20	May 29, 2024 23:26	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
21	May 29, 2024 23:26	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
22	May 29, 2024 23:27	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
23	May 29, 2024 23:27	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
24	May 29, 2024 23:27	0	0	0	0	Error: expected "2192043858 ", got "0"	stderr
25	May 29, 2024 23:27	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
26	May 29, 2024 23:27	0	0	0	0	Error: No answer to stdout. Died or killed?
27	May 29, 2024 23:27	0	0	0	0	Error: No answer to stdout. Died or killed?
28	May 29, 2024 23:28	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
29	May 29, 2024 23:28	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
30	May 29, 2024 23:28	4,968	111,369,317	40,734,003	2,215,936
31	May 29, 2024 23:28	5,588	110,824,792	45,818,299	2,224,128
32	May 29, 2024 23:28	6,053	110,353,189	49,635,210	2,220,032
33	May 29, 2024 23:26	8,127	118,629,712	66,639,931	2,244,608
34	May 29, 2024 23:26	8,322	158,398,798	68,240,290	2,256,896
35	May 29, 2024 23:26	8,760	137,490,621	71,835,884	2,256,896

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