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.

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mmalczakScore: 84,322Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 16, 2023 19:19	82,514	53,126,326	29,513,000	1,017,000	2,289,664
2	Sep 16, 2023 19:19	83,349	56,527,545	29,845,000	994,000	2,289,664
3	Sep 16, 2023 19:20	83,384	56,970,040	29,857,000	995,000	2,269,184
4	Sep 16, 2023 19:18	83,386	61,185,046	28,863,000	1,990,000	2,531,328
5	Sep 16, 2023 19:18	83,397	58,468,909	28,867,000	1,990,000	2,289,664
6	Sep 16, 2023 19:19	83,422	62,016,392	28,875,000	1,991,000	2,273,280
7	Sep 16, 2023 19:19	83,432	58,215,121	29,875,000	995,000	2,359,296
8	Sep 16, 2023 19:18	83,468	56,802,208	29,854,000	1,029,000	2,289,664
9	Sep 16, 2023 19:20	83,570	56,375,831	29,924,000	997,000	2,281,472
10	Sep 16, 2023 19:18	83,603	52,853,058	28,938,000	1,995,000	2,269,184
11	Sep 16, 2023 19:19	83,724	62,460,055	28,980,000	1,998,000	2,265,088
12	Sep 16, 2023 19:19	83,797	60,709,332	29,005,000	2,000,000	2,289,664
13	Sep 16, 2023 19:18	83,835	57,621,031	30,019,000	1,000,000	2,289,664
14	Sep 16, 2023 19:20	83,954	61,546,691	29,059,000	2,004,000	2,289,664
15	Sep 16, 2023 19:20	84,005	61,978,324	30,080,000	1,002,000	2,269,184
16	Sep 16, 2023 19:20	84,014	54,253,861	29,080,000	2,005,000	2,289,664
17	Sep 16, 2023 19:18	84,084	54,935,668	29,104,000	2,007,000	2,289,664
18	Sep 16, 2023 19:20	84,141	54,297,950	29,124,000	2,008,000	2,527,232
19	Sep 16, 2023 19:20	84,322	53,372,201	30,193,000	1,006,000	2,269,184
20	Sep 16, 2023 19:18	84,386	57,835,096	29,209,000	2,014,000	2,289,664
21	Sep 16, 2023 19:18	84,457	54,670,814	29,233,000	2,016,000	2,289,664
22	Sep 16, 2023 19:20	84,492	53,944,567	29,246,000	2,016,000	2,273,280
23	Sep 16, 2023 19:19	84,711	53,637,966	30,332,000	1,011,000	2,265,088
24	Sep 16, 2023 19:19	84,781	62,393,642	29,346,000	2,023,000	2,289,664
25	Sep 16, 2023 19:18	84,789	57,655,404	30,360,000	1,012,000	2,289,664
26	Sep 16, 2023 19:19	85,011	56,062,849	29,425,000	2,029,000	2,289,664
27	Sep 16, 2023 19:19	85,378	103,040,821	31,589,830	0	2,256,896
28	Sep 16, 2023 19:20	85,495	61,343,050	30,613,000	1,020,000	2,273,280
29	Sep 16, 2023 19:19	85,717	105,244,664	31,715,321	0	2,265,088
30	Sep 16, 2023 19:20	85,740	102,195,747	31,723,929	0	2,260,992
31	Sep 16, 2023 19:18	85,771	92,991,249	31,735,362	0	2,265,088
32	Sep 16, 2023 19:18	85,820	95,930,704	31,753,364	0	2,269,184
33	Sep 16, 2023 19:20	86,314	97,076,977	31,936,310	0	2,260,992
34	Sep 16, 2023 19:18	86,371	96,387,183	31,957,284	0	2,265,088
35	Sep 16, 2023 19:20	86,921	93,486,798	32,160,940	0	2,260,992
36	Sep 16, 2023 19:19	87,359	99,337,629	32,322,890	0	2,269,184

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