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: 98,841Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 18, 2023 12:42	97,235	61,696,043	34,978,000	999,000	2,289,664
2	Sep 18, 2023 12:41	97,243	60,129,017	33,982,000	1,998,000	2,273,280
3	Sep 18, 2023 12:42	97,754	58,045,564	34,160,000	2,009,000	2,289,664
4	Sep 18, 2023 12:42	97,803	61,572,682	35,182,000	1,005,000	2,285,568
5	Sep 18, 2023 12:41	97,922	62,671,116	34,219,000	2,012,000	2,289,664
6	Sep 18, 2023 12:41	97,935	71,313,162	34,223,000	2,013,000	2,289,664
7	Sep 18, 2023 12:40	98,008	59,132,440	34,249,000	2,014,000	2,277,376
8	Sep 18, 2023 12:40	98,095	63,472,734	34,279,000	2,016,000	2,289,664
9	Sep 18, 2023 12:41	98,103	58,757,628	34,282,000	2,016,000	2,273,280
10	Sep 18, 2023 12:40	98,214	63,240,149	35,330,000	1,009,000	2,289,664
11	Sep 18, 2023 12:42	98,235	60,765,400	34,328,000	2,019,000	2,289,664
12	Sep 18, 2023 12:42	98,254	63,006,501	35,345,000	1,009,000	2,289,664
13	Sep 18, 2023 12:41	98,657	61,933,007	36,503,000	0	2,289,664
14	Sep 18, 2023 12:40	98,659	62,858,384	35,490,000	1,014,000	2,277,376
15	Sep 18, 2023 12:40	98,676	59,060,297	35,496,000	1,014,000	2,531,328
16	Sep 18, 2023 12:41	98,700	64,471,381	35,505,000	1,014,000	2,289,664
17	Sep 18, 2023 12:40	98,743	59,943,760	35,521,000	1,014,000	2,277,376
18	Sep 18, 2023 12:40	98,803	60,093,341	35,542,000	1,015,000	2,289,664
19	Sep 18, 2023 12:40	98,841	61,982,777	35,556,000	1,015,000	2,289,664
20	Sep 18, 2023 12:40	98,995	67,402,093	35,611,000	1,017,000	2,289,664
21	Sep 18, 2023 12:42	98,997	64,926,271	35,612,000	1,017,000	2,277,376
22	Sep 18, 2023 12:41	99,051	62,278,408	35,631,000	1,018,000	2,289,664
23	Sep 18, 2023 12:41	99,127	63,627,057	36,677,000	0	2,289,664
24	Sep 18, 2023 12:42	99,514	59,783,251	35,825,000	995,000	2,289,664
25	Sep 18, 2023 12:40	99,542	107,088,058	36,830,356	0	2,273,280
26	Sep 18, 2023 12:42	99,551	65,570,235	35,839,000	995,000	2,277,376
27	Sep 18, 2023 12:42	99,603	64,087,550	35,857,000	996,000	2,289,664
28	Sep 18, 2023 12:41	99,784	67,572,339	34,925,000	1,995,000	2,281,472
29	Sep 18, 2023 12:42	99,874	98,008,198	36,953,396	0	2,260,992
30	Sep 18, 2023 12:42	100,090	107,286,370	37,033,174	0	2,252,800
31	Sep 18, 2023 12:40	100,204	100,099,871	37,075,563	0	2,269,184
32	Sep 18, 2023 12:41	100,255	119,786,441	37,094,458	0	2,265,088
33	Sep 18, 2023 12:41	100,753	106,359,306	37,278,653	0	2,277,376
34	Sep 18, 2023 12:41	101,272	104,850,745	37,470,612	0	2,265,088
35	Sep 18, 2023 12:42	101,294	98,602,804	37,478,962	0	2,273,280
36	Sep 18, 2023 12:40	114,290	114,967,656	42,287,135	0	2,269,184

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