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	Nov 20, 2024 17:05	0	0	0	0	0	Error: expected "2221728627 ", got "0"	stderr
2	Nov 20, 2024 16:57	0	0	0	0	0	Error: expected "2244225522 ", got "0"	stderr
3	Nov 20, 2024 16:57	0	0	0	0	0	Error: expected "2256803501 ", got "0"	stderr
4	Nov 20, 2024 16:57	0	0	0	0	0	Error: expected "2248127073 ", got "0"	stderr
5	Nov 20, 2024 16:58	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
6	Nov 20, 2024 16:58	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
7	Nov 20, 2024 16:59	0	0	0	0	0	Error: expected "2299767340 ", got "0"	stderr
8	Nov 20, 2024 17:00	0	0	0	0	0	Error: expected "2257287078 ", got "0"	stderr
9	Nov 20, 2024 17:00	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
10	Nov 20, 2024 17:00	0	0	0	0	0	Error: expected "2227026715 ", got "0"	stderr
11	Nov 20, 2024 17:00	0	0	0	0	0	Error: expected "2217153072 ", got "0"	stderr
12	Nov 20, 2024 17:00	0	0	0	0	0	Error: expected "2306483243 ", got "0"	stderr
13	Nov 20, 2024 17:02	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
14	Nov 20, 2024 17:02	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
15	Nov 20, 2024 17:02	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
16	Nov 20, 2024 17:04	0	0	0	0	0	Error: expected "2214437415 ", got "0"	stderr
17	Nov 20, 2024 16:56	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
18	Nov 20, 2024 17:05	0	0	0	0	0	Error: expected "2289451023 ", got "0"	stderr
19	Nov 20, 2024 17:05	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
20	Nov 20, 2024 17:05	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
21	Nov 20, 2024 17:07	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
22	Nov 20, 2024 17:07	0	0	0	0	0	Error: expected "2277422395 ", got "0"	stderr
23	Nov 20, 2024 17:07	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
24	Nov 20, 2024 17:08	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
25	Nov 28, 2024 03:57	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
26	Nov 28, 2024 03:58	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
27	Nov 28, 2024 04:00	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
28	Nov 28, 2024 04:01	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
29	Dec 19, 2024 00:43	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
30	Dec 19, 2024 00:43	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
31	Dec 19, 2024 00:45	0	0	0	0	0	Error: expected "2287103972 ", got "0"	stderr
32	Dec 24, 2024 23:11	4,668	59,664,671	36,261,000	2,014,000	2,535,424
33	Nov 20, 2024 17:07	5,015	64,078,900	39,116,000	2,005,000	2,424,832
34	Nov 20, 2024 16:57	5,154	68,194,385	40,254,000	2,012,000	2,277,376
35	Nov 20, 2024 16:58	5,161	68,976,802	40,307,000	2,015,000	2,424,832
36	Nov 20, 2024 16:57	5,429	71,165,227	42,498,000	2,023,000	2,420,736
37	Nov 20, 2024 17:07	5,621	72,210,539	44,088,000	2,004,000	2,433,024
38	Nov 20, 2024 19:33	5,657	68,719,642	41,344,000	5,042,000	2,539,520
39	Nov 20, 2024 17:07	5,715	72,603,262	44,826,000	2,037,000	2,277,376
40	Nov 20, 2024 16:59	5,729	74,473,538	40,981,000	5,997,000	2,539,520
41	Nov 20, 2024 17:16	5,871	70,440,037	47,139,000	1,002,000	2,539,520
42	Dec 24, 2024 23:12	6,077	77,796,336	48,834,000	996,000	2,506,752
43	Nov 20, 2024 19:33	6,101	71,709,254	44,027,000	6,003,000	2,428,928
44	Dec 24, 2024 23:12	6,298	78,789,800	49,615,000	2,025,000	2,420,736
45	Nov 20, 2024 16:59	6,380	70,921,711	49,299,000	3,018,000	2,277,376
46	Nov 20, 2024 16:58	6,486	78,122,250	50,177,000	3,010,000	2,277,376
47	Nov 20, 2024 19:33	6,500	84,101,030	49,279,000	4,022,000	2,277,376
48	Dec 24, 2024 23:11	6,519	73,499,713	49,420,000	4,034,000	2,273,280
49	Dec 19, 2024 00:45	6,544	78,962,393	51,639,000	2,025,000	2,428,928
50	Nov 28, 2024 03:58	6,647	82,358,863	43,404,000	11,103,000	192,512
51	Nov 28, 2024 03:58	6,673	80,432,710	45,246,000	9,470,000	331,776
52	Nov 20, 2024 16:58	6,728	77,639,408	54,167,000	1,003,000	2,285,568
53	Dec 19, 2024 00:45	6,770	84,703,472	49,460,000	6,056,000	2,412,544
54	Nov 20, 2024 17:16	6,842	82,813,002	53,098,000	3,005,000	2,539,520
55	Nov 20, 2024 16:59	7,070	75,859,126	53,973,000	3,998,000	2,277,376
56	Dec 24, 2024 23:11	7,332	83,828,805	57,114,000	3,006,000	2,420,736
57	Nov 20, 2024 17:16	7,383	85,973,706	58,526,000	2,018,000	2,277,376
58	Dec 19, 2024 00:45	7,424	82,151,571	56,884,000	3,991,000	2,273,280
59	Nov 20, 2024 16:57	7,832	86,924,025	60,210,000	4,014,000	2,281,472
60	Dec 24, 2024 23:12	8,037	88,798,219	62,908,000	2,995,000	2,428,928
61	Nov 28, 2024 03:58	9,946	109,563,484	47,052,000	34,505,000	323,584

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