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 7, 2026 06:03

Rajarshi BasuScore: 78,507Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 7, 2026 06:03	68,200	592,250,807	439,188,000	120,051,000	2,293,760
2	Jan 7, 2026 06:09	70,384	605,817,661	458,116,000	119,030,000	2,289,664
3	Jan 7, 2026 06:09	70,531	604,472,706	463,484,000	114,872,000	2,318,336
4	Jan 7, 2026 06:04	71,583	615,770,288	466,984,000	119,996,000	2,318,336
5	Jan 7, 2026 06:06	71,711	613,979,078	469,026,000	119,006,000	2,318,336
6	Jan 7, 2026 06:06	72,169	616,616,029	460,831,000	130,952,000	2,281,472
7	Jan 7, 2026 06:06	72,194	621,241,014	472,993,000	118,998,000	2,318,336
8	Jan 7, 2026 06:09	73,240	634,485,491	476,656,000	123,910,000	2,314,240
9	Jan 7, 2026 06:05	73,623	630,622,164	475,771,000	127,938,000	2,281,472
10	Jan 7, 2026 06:05	73,786	629,293,319	491,035,000	114,008,000	2,314,240
11	Jan 7, 2026 06:09	73,842	629,846,535	492,597,000	112,907,000	2,289,664
12	Jan 7, 2026 06:09	74,634	641,107,434	502,001,000	110,000,000	2,318,336
13	Jan 7, 2026 06:06	75,338	638,883,647	502,812,000	114,957,000	2,318,336
14	Jan 7, 2026 06:04	75,359	641,778,285	492,954,000	124,988,000	2,289,664
15	Jan 7, 2026 06:09	75,767	655,532,613	504,426,000	116,867,000	2,281,472
16	Jan 7, 2026 06:09	76,945	663,294,832	516,960,000	113,991,000	2,318,336
17	Jan 7, 2026 06:06	77,083	659,371,195	516,063,000	116,014,000	2,289,664
18	Jan 7, 2026 06:09	77,756	666,139,568	516,674,000	120,923,000	2,318,336
19	Jan 7, 2026 06:09	78,507	669,522,741	518,807,000	124,953,000	2,314,240
20	Jan 7, 2026 06:06	79,422	680,326,596	537,389,000	113,870,000	2,318,336
21	Jan 7, 2026 06:06	81,067	696,720,422	545,796,000	118,955,000	2,318,336
22	Jan 7, 2026 06:06	82,096	699,864,289	550,334,000	122,851,000	2,281,472
23	Jan 7, 2026 06:06	82,121	700,014,889	556,499,000	116,894,000	2,293,760
24	Jan 7, 2026 06:06	83,158	706,670,237	568,910,000	112,982,000	2,314,240
25	Jan 7, 2026 06:11	83,351	709,641,172	565,567,000	117,909,000	2,301,952
26	Jan 7, 2026 06:09	83,389	706,066,615	561,828,000	121,962,000	2,318,336
27	Jan 7, 2026 06:11	85,660	729,422,120	582,511,000	119,899,000	2,289,664
28	Jan 7, 2026 06:06	85,841	736,291,232	581,915,000	121,982,000	2,318,336
29	Jan 7, 2026 06:04	86,563	735,615,949	588,846,000	120,968,000	2,314,240
30	Jan 7, 2026 06:03	87,244	740,538,664	594,503,000	120,899,000	2,281,472
31	Jan 7, 2026 06:03	88,669	755,177,754	614,226,000	112,857,000	2,318,336
32	Jan 7, 2026 06:09	88,815	759,472,294	605,402,000	122,878,000	2,318,336
33	Jan 7, 2026 06:09	91,233	780,553,325	619,267,000	128,847,000	2,281,472
34	Jan 7, 2026 06:06	95,292	809,205,066	648,498,000	132,897,000	2,281,472
35	Jan 7, 2026 06:11	100,008	846,865,560	694,207,000	125,856,000	2,314,240
36	Jan 7, 2026 06:05	107,992	911,699,670	769,595,000	115,938,000	2,293,760

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