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	CPU System	Memory	Error
1	Dec 25, 2024 11:34	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
2	Dec 25, 2024 12:28	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
3	Dec 25, 2024 12:27	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
4	Dec 25, 2024 12:28	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
5	Dec 25, 2024 11:33	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
6	Dec 25, 2024 11:33	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
7	Dec 25, 2024 12:28	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
8	Dec 25, 2024 12:29	0	0	0	0	0	Error: expected "2159742323 ", got "2149796690 "	stderr
9	Dec 25, 2024 12:30	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
10	Dec 25, 2024 11:34	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
11	Dec 25, 2024 11:34	0	0	0	0	0	Error: expected "2104283558 ", got "2104283562 "	stderr
12	Dec 25, 2024 11:34	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
13	Dec 25, 2024 11:35	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
14	Dec 25, 2024 12:31	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
15	Dec 25, 2024 12:31	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
16	Dec 25, 2024 11:35	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
17	Dec 30, 2024 00:41	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
18	Dec 25, 2024 12:27	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
19	Dec 25, 2024 11:36	3,459	51,254,691	28,365,000	0	2,527,232
20	Dec 25, 2024 12:30	3,489	51,802,597	26,566,000	2,043,000	2,527,232
21	Dec 25, 2024 12:30	3,494	54,789,673	26,602,000	2,046,000	2,404,352
22	Dec 25, 2024 11:36	3,508	52,549,558	26,779,000	1,983,000	2,502,656
23	Dec 25, 2024 11:36	3,517	54,778,037	26,854,000	1,989,000	2,412,544
24	Dec 25, 2024 11:36	3,525	50,417,882	26,914,000	1,993,000	2,502,656
25	Dec 25, 2024 12:31	3,532	50,137,589	25,968,000	2,996,000	2,527,232
26	Dec 25, 2024 11:35	3,541	54,332,073	26,030,000	3,003,000	2,416,640
27	Dec 25, 2024 11:35	3,543	48,675,572	27,050,000	2,003,000	2,527,232
28	Dec 25, 2024 11:36	3,565	53,044,634	27,220,000	2,016,000	2,527,232
29	Dec 25, 2024 11:36	3,571	53,836,351	27,263,000	2,019,000	2,420,736
30	Dec 25, 2024 11:35	3,582	58,512,459	24,310,000	5,064,000	2,269,184
31	Dec 25, 2024 11:36	3,605	56,695,817	28,538,000	1,019,000	2,412,544
32	Dec 25, 2024 11:35	3,612	58,412,731	28,596,000	1,021,000	2,527,232
33	Dec 25, 2024 12:31	3,622	54,042,547	23,558,000	6,145,000	2,416,640
34	Dec 25, 2024 11:36	3,640	53,480,714	28,850,000	994,000	2,498,560
35	Dec 25, 2024 12:31	3,653	52,856,436	28,953,000	998,000	2,412,544
36	Dec 25, 2024 11:35	3,658	55,239,514	27,999,000	1,999,000	2,527,232
37	Dec 25, 2024 11:36	3,686	55,663,033	27,202,000	3,022,000	2,420,736
38	Dec 25, 2024 12:30	3,697	52,019,534	27,287,000	3,031,000	2,416,640
39	Dec 25, 2024 11:35	3,735	52,757,288	27,561,000	3,062,000	2,527,232

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