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	Sep 12, 2022 08:52	0	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
2	Sep 12, 2022 08:53	8,355	153,004,563	68,512,856	0	2,273,280
3	Sep 12, 2022 08:52	8,509	95,451,898	60,801,000	8,970,000	2,355,200
4	Sep 12, 2022 08:52	9,220	102,412,640	66,529,000	9,072,000	2,351,104
5	Sep 12, 2022 08:52	9,243	102,921,570	62,829,000	12,964,000	2,342,912
6	Sep 12, 2022 08:52	9,621	102,271,396	67,911,000	10,985,000	2,428,928
7	Sep 12, 2022 08:52	9,645	103,010,841	71,079,000	8,008,000	2,285,568
8	Sep 12, 2022 08:53	9,652	163,929,110	79,145,955	0	2,211,840
9	Sep 12, 2022 08:52	9,816	107,440,067	73,450,000	7,043,000	2,338,816
10	Sep 12, 2022 08:52	9,831	109,086,223	72,551,000	8,061,000	2,277,376
11	Sep 12, 2022 08:52	9,874	149,006,043	80,967,137	0	2,191,360
12	Sep 12, 2022 08:52	9,895	142,523,704	81,138,729	0	2,256,896
13	Sep 12, 2022 08:53	10,245	148,062,661	84,012,917	0	2,191,360
14	Sep 12, 2022 08:52	10,276	107,083,214	75,236,000	9,028,000	2,314,240
15	Sep 12, 2022 08:52	10,282	112,162,320	75,281,000	9,033,000	2,482,176
16	Sep 12, 2022 08:52	10,380	108,301,795	77,104,000	8,010,000	2,478,080
17	Sep 12, 2022 08:52	10,669	152,731,342	87,487,590	0	2,183,168
18	Sep 12, 2022 08:52	10,750	113,314,098	78,136,000	10,017,000	2,400,256
19	Sep 12, 2022 08:52	10,758	167,194,546	88,216,823	0	2,224,128
20	Sep 12, 2022 08:52	10,834	117,778,139	83,845,000	4,990,000	2,375,680
21	Sep 12, 2022 08:52	10,834	118,098,385	76,863,000	11,978,000	2,514,944
22	Sep 12, 2022 08:52	10,897	112,387,512	78,314,000	11,044,000	2,293,760
23	Sep 12, 2022 08:52	10,922	115,242,093	81,509,000	8,050,000	2,338,816
24	Sep 12, 2022 08:52	11,016	162,206,982	90,334,361	0	2,306,048
25	Sep 12, 2022 08:52	11,054	121,607,775	79,562,000	11,078,000	2,334,720
26	Sep 12, 2022 08:52	11,202	117,300,438	83,869,000	7,987,000	2,416,640
27	Sep 12, 2022 08:53	11,301	151,800,766	92,664,593	0	2,244,608
28	Sep 12, 2022 08:52	11,323	119,517,660	85,864,000	6,988,000	2,498,560
29	Sep 12, 2022 08:52	11,328	115,682,391	78,907,000	13,983,000	2,330,624
30	Sep 12, 2022 08:53	11,331	155,173,098	92,910,425	0	2,281,472
31	Sep 12, 2022 08:52	11,392	116,074,818	82,369,000	11,049,000	2,338,816
32	Sep 12, 2022 08:52	11,526	155,836,227	94,510,565	0	2,277,376
33	Sep 12, 2022 08:53	11,606	159,951,340	95,173,010	0	2,224,128
34	Sep 12, 2022 08:52	11,629	117,652,399	90,340,000	5,018,000	2,404,352
35	Sep 12, 2022 08:52	11,653	163,102,796	95,557,069	0	2,187,264
36	Sep 12, 2022 08:53	11,663	172,030,013	95,633,414	0	2,199,552
37	Sep 12, 2022 08:53	11,714	173,986,559	96,054,794	0	2,215,936
38	Sep 12, 2022 08:52	11,743	167,512,988	96,290,910	0	2,310,144
39	Sep 12, 2022 08:52	11,789	170,890,924	96,668,548	0	2,301,952
40	Sep 12, 2022 08:52	11,825	123,336,152	88,972,000	7,997,000	2,297,856
41	Sep 12, 2022 08:52	11,926	122,435,902	86,819,000	10,977,000	2,334,720
42	Sep 12, 2022 08:52	11,936	167,868,868	97,876,793	0	2,281,472
43	Sep 12, 2022 08:52	11,946	126,405,469	88,962,000	8,996,000	2,363,392
44	Sep 12, 2022 08:52	12,118	172,813,647	99,370,543	0	2,228,224
45	Sep 12, 2022 08:53	12,455	164,812,802	102,128,756	0	2,207,744
46	Sep 12, 2022 08:52	12,466	167,901,690	102,221,842	0	2,248,704
47	Sep 12, 2022 08:52	12,535	127,585,107	95,737,000	7,054,000	2,338,816
48	Sep 12, 2022 08:52	12,559	125,063,726	93,982,000	8,998,000	2,424,832
49	Sep 12, 2022 08:52	12,910	132,649,063	90,878,000	14,980,000	2,318,336

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