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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olliecrowScore: 102,338Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 23:23	100,503	60,985,036	35,176,000	2,010,000	2,342,912
2	Mar 20, 2026 23:21	100,719	61,829,788	34,245,000	3,021,000	2,342,912
3	Mar 20, 2026 23:31	101,014	56,227,649	35,355,000	2,020,000	2,342,912
4	Mar 20, 2026 23:21	101,078	61,431,971	35,378,000	2,021,000	2,424,832
5	Mar 20, 2026 23:22	101,173	60,337,547	34,399,000	3,035,000	2,330,624
6	Mar 20, 2026 23:28	101,214	63,981,469	36,437,000	1,012,000	2,342,912
7	Mar 20, 2026 23:27	101,246	63,808,329	34,424,000	3,037,000	2,412,544
8	Mar 20, 2026 23:20	101,257	61,328,148	34,428,000	3,037,000	2,338,816
9	Mar 20, 2026 23:21	101,300	60,745,478	36,468,000	1,013,000	2,334,720
10	Mar 20, 2026 23:32	101,395	61,064,491	36,503,000	1,013,000	2,404,352
11	Mar 20, 2026 23:23	101,435	64,594,896	35,503,000	2,028,000	2,408,448
12	Mar 20, 2026 23:25	101,616	62,362,219	36,582,000	1,016,000	2,416,640
13	Mar 20, 2026 23:31	101,649	66,654,519	35,577,000	2,033,000	2,412,544
14	Mar 20, 2026 23:26	102,235	62,818,749	34,841,000	2,986,000	2,342,912
15	Mar 20, 2026 23:29	102,265	67,527,876	35,847,000	1,991,000	2,342,912
16	Mar 20, 2026 23:21	102,268	62,178,214	35,848,000	1,991,000	2,342,912
17	Mar 20, 2026 23:24	102,268	64,146,693	35,848,000	1,991,000	2,330,624
18	Mar 20, 2026 23:30	102,270	69,921,230	34,853,000	2,987,000	2,342,912
19	Mar 20, 2026 23:26	102,273	67,797,384	34,854,000	2,987,000	2,416,640
20	Mar 20, 2026 23:21	102,292	66,653,952	35,856,000	1,992,000	2,416,640
21	Mar 20, 2026 23:25	102,327	68,741,420	36,865,000	996,000	2,342,912
22	Mar 20, 2026 23:25	102,338	63,886,141	35,873,000	1,992,000	2,330,624
23	Mar 20, 2026 23:32	102,351	66,801,866	35,877,000	1,993,000	2,424,832
24	Mar 20, 2026 23:29	102,481	67,149,452	34,925,000	2,993,000	2,342,912
25	Mar 20, 2026 23:22	102,489	62,136,707	35,926,000	1,995,000	2,342,912
26	Mar 20, 2026 23:20	102,611	68,658,246	35,968,000	1,998,000	2,416,640
27	Mar 20, 2026 23:21	102,624	61,406,854	35,973,000	1,998,000	2,404,352
28	Mar 20, 2026 23:27	102,751	68,106,549	35,017,000	3,001,000	2,342,912
29	Mar 20, 2026 23:32	102,781	63,846,046	36,028,000	2,001,000	2,412,544
30	Mar 20, 2026 23:27	102,786	70,187,385	36,030,000	2,001,000	2,408,448
31	Mar 20, 2026 23:23	102,789	66,991,160	36,031,000	2,001,000	2,342,912
32	Mar 20, 2026 23:30	102,851	66,819,872	35,051,000	3,004,000	2,408,448
33	Mar 20, 2026 23:28	102,870	69,236,695	36,059,000	2,003,000	2,416,640
34	Mar 20, 2026 23:31	103,078	61,019,391	36,132,000	2,007,000	2,482,176
35	Mar 20, 2026 23:29	103,208	70,027,403	36,178,000	2,009,000	2,400,256
36	Mar 20, 2026 23:26	103,300	61,377,056	35,204,000	3,017,000	2,494,464
37	Mar 20, 2026 23:24	103,300	58,871,088	36,210,000	2,011,000	2,412,544
38	Mar 20, 2026 23:22	103,665	63,209,151	35,328,000	3,028,000	2,342,912
39	Mar 20, 2026 23:28	103,673	70,061,595	36,341,000	2,018,000	2,416,640
40	Mar 20, 2026 23:20	103,878	58,219,386	35,401,000	3,034,000	2,420,736
41	Mar 20, 2026 23:24	103,943	60,851,637	36,435,000	2,024,000	2,342,912
42	Mar 20, 2026 23:30	115,422	65,868,155	38,734,000	3,972,000	2,347,008

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