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 listJan 2, 2026 08:18

Rajarshi BasuScore: 86,631Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 2, 2026 08:18	81,731	705,389,274	546,342,000	123,851,000	2,310,144
2	Jan 2, 2026 08:18	82,129	702,035,295	553,554,000	119,903,000	2,281,472
3	Jan 2, 2026 08:18	82,693	704,079,343	555,252,000	122,834,000	2,281,472
4	Jan 2, 2026 08:13	82,703	706,999,193	569,297,000	108,865,000	2,297,856
5	Jan 2, 2026 08:18	83,066	710,435,443	569,285,000	111,859,000	2,314,240
6	Jan 2, 2026 08:18	83,337	711,375,122	563,473,000	119,888,000	2,297,856
7	Jan 2, 2026 08:18	83,642	712,275,466	565,891,000	119,976,000	2,314,240
8	Jan 2, 2026 08:18	83,808	719,421,429	564,367,000	122,862,000	2,310,144
9	Jan 2, 2026 08:13	83,876	715,743,059	580,816,000	106,966,000	2,367,488
10	Jan 2, 2026 08:18	84,357	718,427,357	589,766,000	101,959,000	2,281,472
11	Jan 2, 2026 08:18	84,417	720,929,377	575,350,000	116,868,000	2,297,856
12	Jan 2, 2026 08:18	84,564	722,906,658	571,523,000	121,898,000	2,281,472
13	Jan 2, 2026 08:19	84,618	719,687,583	576,890,000	116,977,000	2,301,952
14	Jan 2, 2026 08:18	84,750	721,643,668	571,956,000	122,990,000	2,314,240
15	Jan 2, 2026 08:19	86,039	732,991,893	583,601,000	121,916,000	2,314,240
16	Jan 2, 2026 08:19	86,226	740,033,177	583,221,000	123,834,000	2,322,432
17	Jan 2, 2026 08:19	86,631	739,621,356	593,479,000	116,897,000	2,293,760
18	Jan 2, 2026 08:18	87,460	746,419,629	605,300,000	111,870,000	2,314,240
19	Jan 2, 2026 08:19	87,808	756,834,098	606,021,000	114,004,000	2,310,144
20	Jan 2, 2026 08:18	88,208	752,672,487	613,409,000	109,894,000	2,314,240
21	Jan 2, 2026 08:19	88,836	757,748,773	614,542,000	113,915,000	2,310,144
22	Jan 2, 2026 08:19	89,837	771,097,406	626,712,000	109,949,000	2,281,472
23	Jan 2, 2026 08:18	90,113	764,603,538	619,102,000	119,826,000	2,281,472
24	Jan 2, 2026 08:18	98,436	833,576,224	692,294,000	114,882,000	2,281,472
25	Jan 2, 2026 08:18	98,631	842,872,384	691,810,000	116,968,000	2,314,240
26	Jan 2, 2026 08:19	99,147	845,839,739	706,134,000	106,869,000	2,293,760
27	Jan 2, 2026 08:18	100,115	848,002,163	708,086,000	112,854,000	2,301,952
28	Jan 2, 2026 08:18	100,905	856,396,854	697,514,000	129,909,000	2,314,240
29	Jan 2, 2026 08:18	101,458	857,631,541	716,098,000	115,854,000	2,297,856
30	Jan 2, 2026 08:13	104,982	892,685,849	746,009,000	114,847,000	2,314,240
31	Jan 2, 2026 08:19	105,189	889,342,352	733,616,000	128,932,000	2,281,472
32	Jan 2, 2026 08:18	105,189	891,780,905	734,619,000	127,933,000	2,314,240
33	Jan 2, 2026 08:18	115,874	977,523,599	826,277,000	123,891,000	2,297,856

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