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: 98,900Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 16, 2023 16:12	97,249	57,970,117	33,983,000	1,999,000	2,289,664
2	Sep 16, 2023 16:15	97,430	59,122,640	34,047,000	2,002,000	2,289,664
3	Sep 16, 2023 16:17	97,635	59,003,086	35,122,000	1,003,000	2,531,328
4	Sep 16, 2023 16:39	97,641	60,158,120	34,120,000	2,007,000	2,289,664
5	Sep 16, 2023 16:15	97,651	64,966,025	34,124,000	2,007,000	2,289,664
6	Sep 16, 2023 16:39	97,692	58,161,819	34,138,000	2,008,000	2,273,280
7	Sep 16, 2023 16:39	97,757	63,450,207	35,166,000	1,004,000	2,289,664
8	Sep 16, 2023 16:12	97,759	57,854,345	34,162,000	2,009,000	2,289,664
9	Sep 16, 2023 16:12	97,773	60,584,158	34,167,000	2,009,000	2,273,280
10	Sep 16, 2023 16:39	97,776	60,146,730	34,168,000	2,009,000	2,289,664
11	Sep 16, 2023 16:39	97,876	58,569,070	34,203,000	2,011,000	2,289,664
12	Sep 16, 2023 16:15	98,014	63,309,609	34,251,000	2,014,000	2,289,664
13	Sep 16, 2023 16:15	98,030	60,797,639	34,256,000	2,015,000	2,289,664
14	Sep 16, 2023 16:12	98,049	59,496,224	34,263,000	2,015,000	2,289,664
15	Sep 16, 2023 16:12	98,146	58,983,038	34,297,000	2,017,000	2,273,280
16	Sep 16, 2023 16:12	98,149	61,713,578	35,334,000	981,000	2,277,376
17	Sep 16, 2023 16:17	98,184	59,296,994	34,310,000	2,018,000	2,285,568
18	Sep 16, 2023 16:17	98,300	59,680,717	34,351,000	2,020,000	2,289,664
19	Sep 16, 2023 16:17	98,362	61,914,851	34,373,000	2,021,000	2,289,664
20	Sep 16, 2023 16:17	98,470	59,667,455	34,410,000	2,024,000	2,531,328
21	Sep 16, 2023 16:39	98,638	59,678,759	36,496,000	0	2,281,472
22	Sep 16, 2023 16:15	98,659	60,898,526	36,504,000	0	2,289,664
23	Sep 16, 2023 16:15	98,662	61,181,519	34,477,000	2,028,000	2,281,472
24	Sep 16, 2023 16:17	98,776	69,159,818	35,532,000	1,015,000	2,289,664
25	Sep 16, 2023 16:39	98,900	58,334,325	36,593,000	0	2,289,664
26	Sep 16, 2023 16:12	98,914	63,814,979	35,582,000	1,016,000	2,527,232
27	Sep 16, 2023 16:17	98,935	62,464,404	35,590,000	1,016,000	2,289,664
28	Sep 16, 2023 16:12	98,995	66,258,913	35,611,000	1,017,000	2,289,664
29	Sep 16, 2023 16:39	99,000	66,460,954	35,613,000	1,017,000	2,289,664
30	Sep 16, 2023 16:15	99,014	63,837,599	35,618,000	1,017,000	2,289,664
31	Sep 16, 2023 16:12	99,073	66,779,820	35,639,000	1,018,000	2,289,664
32	Sep 16, 2023 16:17	99,168	63,633,773	35,673,000	1,019,000	2,277,376
33	Sep 16, 2023 16:15	99,357	98,892,598	36,761,958	0	2,273,280
34	Sep 16, 2023 16:39	99,486	56,478,323	34,821,000	1,989,000	2,383,872
35	Sep 16, 2023 16:39	99,522	103,887,291	36,823,321	0	2,256,896
36	Sep 16, 2023 16:12	99,619	112,983,264	36,859,156	0	2,269,184
37	Sep 16, 2023 16:15	99,622	63,903,730	35,864,000	996,000	2,273,280
38	Sep 16, 2023 16:15	99,708	104,734,218	36,891,936	0	2,273,280
39	Sep 16, 2023 16:17	99,806	110,500,415	36,928,037	0	2,273,280
40	Sep 16, 2023 16:39	99,807	92,738,863	36,928,464	0	2,277,376
41	Sep 16, 2023 16:12	99,919	97,283,404	36,970,049	0	2,265,088
42	Sep 16, 2023 16:17	99,984	59,603,949	34,995,000	1,999,000	2,359,296
43	Sep 16, 2023 16:15	100,084	64,702,259	36,031,000	1,000,000	2,273,280
44	Sep 16, 2023 16:17	100,215	115,910,450	37,079,476	0	2,273,280
45	Sep 16, 2023 16:15	100,398	99,495,069	37,147,370	0	2,265,088
46	Sep 16, 2023 16:39	100,580	99,430,216	37,214,664	0	2,269,184
47	Sep 16, 2023 16:17	100,755	87,044,736	37,279,519	0	2,256,896
48	Sep 16, 2023 16:12	100,784	95,524,170	37,289,933	0	2,273,280

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