TopK

Find the sum of the 100 largest values in 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 uint64 sum of the top 100 greatest values, printed as a decimal string.

Restrictions:60s512Mb 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 14, 2021 13:44

Yuriy LyfenkoScore: 88,646Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jul 14, 2021 13:48	87,049	555,735,914	30,195,000	2,013,000	2,326,528
2	Jul 14, 2021 13:44	87,503	555,910,794	30,353,000	2,023,000	2,326,528
3	Jul 14, 2021 13:44	87,724	554,434,494	30,430,000	2,028,000	2,326,528
4	Jul 14, 2021 13:44	87,751	557,152,569	30,439,000	2,029,000	2,502,656
5	Jul 14, 2021 13:48	87,946	561,323,284	31,524,000	1,016,000	2,326,528
6	Jul 14, 2021 13:48	88,038	560,087,102	31,557,000	1,017,000	2,506,752
7	Jul 14, 2021 13:48	88,043	559,355,542	31,558,000	1,018,000	2,326,528
8	Jul 14, 2021 13:43	88,133	588,069,027	32,609,087	0	2,248,704
9	Jul 14, 2021 13:48	88,466	591,163,095	32,732,568	0	2,252,800
10	Jul 14, 2021 13:48	88,527	563,781,682	30,770,000	1,985,000	2,330,624
11	Jul 14, 2021 13:48	88,537	600,895,673	32,758,588	0	2,252,800
12	Jul 14, 2021 13:44	88,543	594,169,936	32,761,077	0	2,252,800
13	Jul 14, 2021 13:43	88,550	590,273,529	32,763,354	0	2,252,800
14	Jul 14, 2021 13:44	88,550	587,198,761	32,763,611	0	2,248,704
15	Jul 14, 2021 13:44	88,573	558,770,631	31,779,000	993,000	2,330,624
16	Jul 14, 2021 13:44	88,646	562,852,307	29,818,000	2,981,000	2,510,848
17	Jul 14, 2021 13:44	88,662	558,323,773	30,817,000	1,988,000	2,326,528
18	Jul 14, 2021 13:44	88,800	593,500,856	32,855,936	0	2,248,704
19	Jul 14, 2021 13:48	88,917	595,684,885	32,899,462	0	2,179,072
20	Jul 14, 2021 13:44	88,930	603,919,002	32,904,216	0	2,252,800
21	Jul 14, 2021 13:44	88,970	560,509,644	29,927,000	2,992,000	2,330,624
22	Jul 14, 2021 13:44	89,154	563,592,225	29,989,000	2,998,000	2,326,528
23	Jul 14, 2021 13:44	89,260	599,134,106	33,026,158	0	2,306,048
24	Jul 14, 2021 13:48	89,327	558,650,669	30,047,000	3,004,000	2,318,336
25	Jul 14, 2021 13:48	89,346	556,409,914	31,055,000	2,003,000	2,330,624
26	Jul 14, 2021 13:48	89,419	561,317,927	31,080,000	2,005,000	2,326,528
27	Jul 14, 2021 13:44	89,435	555,610,367	30,083,000	3,008,000	2,510,848
28	Jul 14, 2021 13:48	89,530	558,583,385	31,119,000	2,007,000	2,330,624
29	Jul 14, 2021 13:43	89,540	590,589,927	33,129,874	0	2,179,072
30	Jul 14, 2021 13:44	89,791	599,790,820	33,222,816	0	2,248,704

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