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 listSep 15, 2021 18:02

Yuriy LyfenkoScore: 61,508Success

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	Sep 15, 2021 18:02	60,835	551,555,362	22,509,000	0	2,285,568
2	Sep 15, 2021 18:02	60,903	548,347,816	21,510,000	1,024,000	2,289,664
3	Sep 15, 2021 18:02	60,989	553,174,894	21,541,000	1,025,000	2,281,472
4	Sep 15, 2021 18:01	61,057	549,954,771	21,565,000	1,026,000	2,281,472
5	Sep 15, 2021 18:01	61,105	552,029,908	21,582,000	1,027,000	2,281,472
6	Sep 15, 2021 18:02	61,130	547,062,303	21,590,000	1,028,000	2,281,472
7	Sep 15, 2021 18:02	61,132	554,164,274	21,591,000	1,028,000	2,281,472
8	Sep 15, 2021 18:02	61,132	554,189,467	22,619,000	0	2,281,472
9	Sep 15, 2021 18:02	61,138	550,342,949	21,593,000	1,028,000	2,273,280
10	Sep 15, 2021 18:01	61,154	548,884,444	21,599,000	1,028,000	2,281,472
11	Sep 15, 2021 18:01	61,195	554,455,404	21,613,000	1,029,000	2,281,472
12	Sep 15, 2021 18:02	61,205	550,579,217	20,588,000	2,058,000	2,273,280
13	Sep 15, 2021 18:01	61,214	552,104,488	21,620,000	1,029,000	2,285,568
14	Sep 15, 2021 18:01	61,300	549,350,496	21,695,000	986,000	2,281,472
15	Sep 15, 2021 18:02	61,411	552,352,845	21,735,000	987,000	2,269,184
16	Sep 15, 2021 18:02	61,416	550,393,556	22,724,000	0	2,367,488
17	Sep 15, 2021 18:02	61,419	554,674,395	20,749,000	1,976,000	2,281,472
18	Sep 15, 2021 18:01	61,438	550,611,419	20,756,000	1,976,000	2,289,664
19	Sep 15, 2021 18:02	61,508	549,290,204	20,779,000	1,979,000	2,289,664
20	Sep 15, 2021 18:02	61,511	551,688,781	20,780,000	1,979,000	2,281,472
21	Sep 15, 2021 18:02	61,522	558,108,945	21,774,000	989,000	2,281,472
22	Sep 15, 2021 18:02	61,527	551,801,359	20,786,000	1,979,000	2,281,472
23	Sep 15, 2021 18:01	61,530	553,887,630	21,777,000	989,000	2,281,472
24	Sep 15, 2021 18:01	61,530	552,063,500	20,787,000	1,979,000	2,273,280
25	Sep 15, 2021 18:02	61,535	558,367,039	20,789,000	1,979,000	2,289,664
26	Sep 15, 2021 18:02	61,541	548,645,671	20,790,000	1,980,000	2,269,184
27	Sep 15, 2021 18:02	61,549	557,227,517	20,793,000	1,980,000	2,273,280
28	Sep 15, 2021 18:02	64,185	584,059,557	23,748,596	0	2,248,704
29	Sep 15, 2021 18:01	64,197	582,624,350	23,752,764	0	2,269,184
30	Sep 15, 2021 18:01	64,247	594,349,616	23,771,333	0	2,269,184
31	Sep 15, 2021 18:02	64,279	589,276,581	23,783,224	0	2,252,800
32	Sep 15, 2021 18:02	64,285	584,664,348	23,785,483	0	2,248,704
33	Sep 15, 2021 18:02	64,373	579,293,228	23,818,145	0	2,273,280
34	Sep 15, 2021 18:01	64,379	585,235,542	23,820,310	0	2,252,800
35	Sep 15, 2021 18:02	64,682	581,337,886	23,932,255	0	2,248,704
36	Sep 15, 2021 18:02	64,730	581,901,276	23,950,033	0	2,252,800

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