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 20, 2026 11:17

Dominique GarmierScore: 13,988Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 12:08	13,886	140,026,143	112,864,000	998,000	2,433,024
2	Mar 20, 2026 12:39	13,900	145,122,442	111,979,000	1,999,000	2,437,120
3	Mar 20, 2026 13:06	13,906	143,341,730	112,027,000	2,000,000	2,428,928
4	Mar 20, 2026 12:08	13,920	137,904,636	113,143,000	1,001,000	2,473,984
5	Mar 20, 2026 11:51	13,925	139,262,392	113,185,000	1,001,000	2,322,432
6	Mar 20, 2026 11:34	13,931	139,407,459	111,227,000	3,006,000	2,322,432
7	Mar 20, 2026 13:36	13,932	138,497,567	112,235,000	2,004,000	2,347,008
8	Mar 20, 2026 11:34	13,938	145,258,262	112,286,000	2,005,000	2,330,624
9	Mar 20, 2026 14:13	13,950	142,182,617	111,377,000	3,010,000	2,379,776
10	Mar 20, 2026 13:36	13,950	142,227,265	109,376,000	5,017,000	2,342,912
11	Mar 20, 2026 11:17	13,955	142,873,839	114,432,000	0	2,355,200
12	Mar 20, 2026 12:58	13,959	139,353,529	112,453,000	2,008,000	2,510,848
13	Mar 20, 2026 12:21	13,968	138,834,632	112,529,000	2,009,000	2,293,760
14	Mar 20, 2026 13:06	13,971	139,663,464	112,555,000	2,009,000	2,351,104
15	Mar 20, 2026 12:39	13,971	145,952,048	112,557,000	2,009,000	2,396,160
16	Mar 20, 2026 12:58	13,979	141,066,659	113,624,000	1,005,000	2,326,528
17	Mar 20, 2026 14:13	13,988	137,526,445	112,705,000	1,994,000	2,269,184
18	Mar 20, 2026 12:21	13,996	142,117,973	112,772,000	1,995,000	2,334,720
19	Mar 20, 2026 14:13	13,996	141,095,011	113,771,000	997,000	2,420,736
20	Mar 20, 2026 12:08	13,997	141,222,824	112,782,000	1,996,000	2,347,008
21	Mar 20, 2026 11:40	13,997	140,381,204	112,778,000	1,996,000	2,273,280
22	Mar 20, 2026 12:39	13,998	142,512,806	112,791,000	1,996,000	2,482,176
23	Mar 20, 2026 11:51	13,999	147,975,277	112,797,000	1,996,000	2,285,568
24	Mar 20, 2026 13:36	13,999	142,682,209	113,793,000	998,000	2,293,760
25	Mar 20, 2026 13:06	14,008	141,009,737	112,868,000	1,997,000	2,265,088
26	Mar 20, 2026 12:58	14,019	141,185,040	112,954,000	1,999,000	2,277,376
27	Mar 20, 2026 11:34	14,019	144,578,797	111,957,000	2,998,000	2,490,368
28	Mar 20, 2026 12:21	14,047	139,355,494	114,182,000	1,001,000	2,355,200
29	Mar 20, 2026 11:40	14,060	139,812,737	112,282,000	3,007,000	2,301,952
30	Mar 20, 2026 11:40	14,062	139,660,161	112,298,000	3,007,000	2,297,856
31	Mar 20, 2026 11:17	14,066	141,038,510	112,330,000	3,008,000	2,469,888
32	Mar 20, 2026 11:51	14,067	138,578,716	115,351,000	0	2,334,720
33	Mar 20, 2026 11:17	14,174	148,142,865	114,222,000	2,003,000	2,510,848

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