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 listJul 8, 2025 19:48

Adam FolwarcznyScore: 107,692Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 8, 2025 19:34	6,461	77,979,919	48,981,000	3,998,000	2,273,280
2	Jul 8, 2025 19:34	6,594	78,875,099	52,072,000	2,002,000	2,338,816
3	Jul 8, 2025 19:46	6,670	83,231,189	51,656,000	3,038,000	2,453,504
4	Jul 8, 2025 19:49	6,965	86,476,588	52,107,000	5,010,000	2,437,120
5	Jul 8, 2025 19:34	7,051	85,455,057	54,827,000	2,990,000	2,281,472
6	Jul 8, 2025 19:46	7,068	78,732,839	54,957,000	2,997,000	2,465,792
7	Jul 8, 2025 19:34	7,075	85,331,473	54,016,000	4,001,000	2,482,176
8	Jul 8, 2025 19:50	7,106	85,346,933	54,249,000	4,018,000	2,408,448
9	Jul 8, 2025 19:48	7,107	81,987,871	54,260,000	4,019,000	2,367,488
10	Jul 8, 2025 19:47	7,314	84,298,034	57,975,000	1,999,000	2,486,272
11	Jul 8, 2025 19:46	7,618	87,662,584	59,447,000	3,022,000	2,306,048
12	Jul 8, 2025 19:49	84,338	711,770,874	584,638,000	106,933,000	2,392,064
13	Jul 8, 2025 19:49	89,189	755,736,573	607,458,000	123,889,000	2,289,664
14	Jul 8, 2025 19:34	94,173	796,975,968	656,333,000	115,882,000	2,306,048
15	Jul 8, 2025 19:47	95,982	816,171,837	668,194,000	118,856,000	2,293,760
16	Jul 8, 2025 19:46	104,971	886,891,266	741,796,000	118,967,000	2,428,928
17	Jul 8, 2025 19:50	107,692	908,372,366	770,192,000	112,881,000	2,330,624
18	Jul 8, 2025 19:47	112,922	951,343,060	810,089,000	115,869,000	2,396,160
19	Jul 8, 2025 19:48	118,545	996,461,712	853,183,000	118,886,000	2,387,968
20	Jul 8, 2025 19:48	124,249	1,044,681,857	893,984,000	124,858,000	2,281,472
21	Jul 8, 2025 19:34	126,799	1,073,459,575	923,891,000	115,861,000	2,289,664
22	Jul 8, 2025 19:48	127,693	1,075,205,571	926,190,000	120,894,000	2,297,856
23	Jul 8, 2025 19:46	131,123	1,099,248,497	952,300,000	122,909,000	2,293,760
24	Jul 8, 2025 19:48	132,139	1,110,862,239	962,594,000	120,949,000	2,510,848
25	Jul 8, 2025 19:48	132,384	1,113,972,965	970,595,000	114,952,000	2,281,472
26	Jul 8, 2025 19:34	132,772	1,122,092,076	974,863,000	113,867,000	2,457,600
27	Jul 8, 2025 19:46	133,815	1,121,585,382	980,356,000	116,923,000	2,306,048
28	Jul 8, 2025 19:46	136,723	1,143,911,830	1,000,221,000	120,905,000	2,297,856
29	Jul 8, 2025 19:34	137,387	1,160,707,787	1,012,721,000	113,856,000	2,297,856
30	Jul 8, 2025 19:46	141,557	1,188,876,181	1,040,893,000	119,872,000	2,510,848
31	Jul 8, 2025 19:34	145,389	1,222,742,683	1,066,274,000	125,914,000	2,449,408
32	Jul 8, 2025 19:50	154,282	1,288,385,817	1,143,195,000	121,914,000	2,281,472
33	Jul 8, 2025 19:46	156,480	1,310,780,488	1,171,214,000	111,924,000	2,285,568

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