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 listMar 12, 2026 20:39

Josu San MartinScore: 11,206Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 12, 2026 20:39	3,298	53,859,099	25,039,000	2,003,000	2,420,736
2	Mar 12, 2026 20:36	3,303	50,008,686	25,076,000	2,006,000	2,269,184
3	Mar 12, 2026 20:36	3,304	52,137,733	23,082,000	4,014,000	2,449,408
4	Mar 12, 2026 20:23	3,308	56,103,887	25,116,000	2,009,000	2,420,736
5	Mar 12, 2026 20:38	3,309	51,224,141	25,126,000	2,010,000	2,461,696
6	Mar 12, 2026 20:36	3,311	56,396,488	26,149,000	1,005,000	2,449,408
7	Mar 12, 2026 20:23	3,316	57,984,542	26,185,000	1,007,000	2,498,560
8	Mar 12, 2026 20:39	3,317	51,351,777	26,191,000	1,007,000	2,482,176
9	Mar 12, 2026 20:38	3,330	53,633,896	25,283,000	2,022,000	2,506,752
10	Mar 12, 2026 20:39	3,341	54,735,318	26,384,000	1,014,000	2,355,200
11	Mar 12, 2026 20:40	3,424	62,561,793	26,073,000	2,005,000	2,473,984
12	Mar 12, 2026 20:39	3,453	53,429,416	26,295,000	2,022,000	2,486,272
13	Mar 12, 2026 20:39	3,470	51,985,365	27,435,000	1,016,000	2,498,560
14	Mar 12, 2026 20:34	3,507	57,142,305	27,731,000	1,027,000	2,461,696
15	Mar 12, 2026 20:38	11,185	116,835,475	90,717,000	996,000	2,375,680
16	Mar 12, 2026 20:39	11,187	117,500,744	88,742,000	2,991,000	2,375,680
17	Mar 12, 2026 20:34	11,193	115,782,149	89,784,000	1,995,000	2,387,968
18	Mar 12, 2026 20:40	11,202	120,456,751	88,865,000	2,995,000	2,322,432
19	Mar 12, 2026 20:38	11,205	124,633,777	88,885,000	2,996,000	2,506,752
20	Mar 12, 2026 20:36	11,206	117,758,119	88,891,000	2,996,000	2,392,064
21	Mar 12, 2026 20:38	11,210	114,223,840	89,928,000	1,998,000	2,383,872
22	Mar 12, 2026 20:36	11,210	123,843,579	88,922,000	2,997,000	2,363,392
23	Mar 12, 2026 20:36	11,211	122,110,146	88,937,000	2,997,000	2,363,392
24	Mar 12, 2026 20:36	11,211	121,667,293	89,935,000	1,998,000	2,408,448
25	Mar 12, 2026 20:40	11,211	119,147,948	89,930,000	1,998,000	2,322,432
26	Mar 12, 2026 21:46	11,212	117,962,696	89,941,000	1,998,000	2,375,680
27	Mar 12, 2026 20:40	11,213	114,777,086	89,947,000	1,998,000	2,400,256
28	Mar 12, 2026 20:23	11,215	115,476,458	89,965,000	1,999,000	2,392,064
29	Mar 12, 2026 20:40	11,216	113,258,056	88,973,000	2,999,000	2,347,008
30	Mar 12, 2026 21:46	11,219	119,397,639	89,997,000	1,999,000	2,371,584
31	Mar 12, 2026 20:36	11,236	116,719,475	91,137,000	1,001,000	2,416,640
32	Mar 12, 2026 20:39	11,237	114,172,905	91,141,000	1,001,000	2,326,528
33	Mar 12, 2026 20:40	11,239	118,215,520	89,157,000	3,005,000	2,387,968
34	Mar 12, 2026 20:38	11,247	113,693,819	92,227,000	0	2,404,352
35	Mar 12, 2026 20:34	11,249	113,792,693	91,237,000	1,002,000	2,355,200
36	Mar 12, 2026 21:46	11,261	115,263,530	92,340,000	0	2,334,720
37	Mar 12, 2026 20:36	11,263	116,538,858	91,354,000	1,003,000	2,375,680
38	Mar 12, 2026 20:39	11,266	118,895,251	91,378,000	1,004,000	2,318,336
39	Mar 12, 2026 20:39	11,460	119,872,991	91,971,000	1,999,000	2,342,912

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