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.

Back to listJun 20, 2021 22:41

Andrey Tsvetkov

Score: 103,925

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Run Statistics

#	Date	Score	Wall Time	CPU User	Memory
1	Jun 20, 2021 22:41	82,780	753,203,578	678,800,046	2,301,952
2	Jun 20, 2021 22:40	84,617	789,465,474	693,863,027	2,265,088
3	Jun 20, 2021 22:40	84,715	760,767,818	694,659,706	2,293,760
4	Jun 20, 2021 22:40	85,452	755,657,920	700,703,887	2,310,144
5	Jun 20, 2021 22:40	86,027	771,610,733	705,424,221	2,293,760
6	Jun 20, 2021 22:40	86,202	790,114,083	706,856,170	2,301,952
7	Jun 20, 2021 22:41	90,057	798,916,576	738,469,499	2,306,048
8	Jun 20, 2021 22:41	91,162	804,300,543	747,531,660	2,228,224
9	Jun 20, 2021 22:40	91,412	820,639,889	749,576,361	2,297,856
10	Jun 20, 2021 22:44	92,295	817,012,443	756,820,746	2,289,664
11	Jun 20, 2021 22:40	94,606	834,520,947	775,770,692	2,297,856
12	Jun 20, 2021 22:40	94,732	830,935,830	776,801,701	2,281,472
13	Jun 20, 2021 22:40	95,828	845,184,453	785,786,663	2,310,144
14	Jun 20, 2021 22:41	97,448	866,002,779	799,075,384	2,297,856
15	Jun 20, 2021 22:44	99,047	866,696,309	812,183,040	2,301,952
16	Jun 20, 2021 22:41	99,190	870,100,208	813,361,579	2,301,952
17	Jun 20, 2021 22:41	101,514	910,896,057	832,416,634	2,306,048
18	Jun 20, 2021 22:40	102,390	916,532,007	839,597,866	2,301,952
19	Jun 20, 2021 22:44	103,925	908,763,577	852,188,116	2,301,952
20	Jun 20, 2021 22:41	104,077	909,465,535	853,431,444	2,306,048
21	Jun 20, 2021 22:41	104,342	921,854,461	855,606,534	2,289,664
22	Jun 20, 2021 22:40	105,244	922,779,437	863,000,480	2,289,664
23	Jun 20, 2021 22:41	105,736	924,059,875	867,034,519	2,301,952
24	Jun 20, 2021 22:40	107,469	941,020,458	881,244,889	2,289,664
25	Jun 20, 2021 22:40	107,572	943,277,622	882,088,416	2,297,856
26	Jun 20, 2021 22:41	108,399	963,302,060	888,869,461	2,285,568
27	Jun 20, 2021 22:40	109,327	953,145,532	896,484,917	2,289,664
28	Jun 20, 2021 22:41	109,786	969,997,690	900,248,522	2,297,856
29	Jun 20, 2021 22:40	111,668	982,799,904	915,673,929	2,285,568
30	Jun 20, 2021 22:40	115,259	1,003,782,895	945,125,668	2,306,048
31	Jun 20, 2021 22:41	117,489	1,017,684,298	963,408,562	2,297,856
32	Jun 20, 2021 22:41	118,346	1,024,779,305	970,437,286	2,289,664
33	Jun 20, 2021 22:40	118,547	1,041,997,171	972,083,912	2,301,952
34	Jun 20, 2021 22:40	119,057	1,037,139,935	976,271,158	2,285,568
35	Jun 20, 2021 22:41	120,758	1,058,143,049	990,212,812	2,306,048
36	Jun 20, 2021 22:41	124,455	1,088,309,450	1,020,532,921	2,269,184

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