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 listMar 20, 2026 22:41

olliecrowScore: 101,895Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 22:40	100,686	63,782,257	35,241,000	2,013,000	2,424,832
2	Mar 20, 2026 22:38	100,892	59,772,625	35,313,000	2,017,000	2,416,640
3	Mar 20, 2026 22:44	101,162	62,609,494	36,419,000	1,011,000	2,412,544
4	Mar 20, 2026 22:43	101,186	59,433,232	35,416,000	2,023,000	2,342,912
5	Mar 20, 2026 22:44	101,189	58,567,570	34,405,000	3,035,000	2,342,912
6	Mar 20, 2026 22:44	101,222	59,643,989	34,416,000	3,036,000	2,342,912
7	Mar 20, 2026 22:41	101,270	62,453,752	35,445,000	2,025,000	2,342,912
8	Mar 20, 2026 22:43	101,332	58,034,175	35,467,000	2,026,000	2,326,528
9	Mar 20, 2026 22:45	101,395	60,261,531	34,475,000	3,041,000	2,420,736
10	Mar 20, 2026 22:45	101,400	63,209,601	36,504,000	1,014,000	2,342,912
11	Mar 20, 2026 22:40	101,432	68,143,014	35,502,000	2,028,000	2,416,640
12	Mar 20, 2026 22:38	101,605	58,637,585	35,562,000	2,032,000	2,408,448
13	Mar 20, 2026 22:39	101,605	64,956,083	36,578,000	1,016,000	2,420,736
14	Mar 20, 2026 22:44	101,689	69,895,058	36,609,000	1,016,000	2,342,912
15	Mar 20, 2026 22:43	101,700	63,061,886	35,595,000	2,034,000	2,342,912
16	Mar 20, 2026 22:39	101,895	69,911,922	36,683,000	1,018,000	2,424,832
17	Mar 20, 2026 22:44	102,208	64,663,337	36,795,000	1,022,000	2,334,720
18	Mar 20, 2026 22:39	102,222	60,394,000	35,832,000	1,990,000	2,543,616
19	Mar 20, 2026 22:43	102,300	67,364,389	34,863,000	2,988,000	2,342,912
20	Mar 20, 2026 22:45	102,311	68,060,307	34,867,000	2,988,000	2,416,640
21	Mar 20, 2026 22:45	102,349	63,889,614	34,880,000	2,989,000	2,416,640
22	Mar 20, 2026 22:44	102,381	67,897,350	34,891,000	2,990,000	2,416,640
23	Mar 20, 2026 22:41	102,414	61,980,312	34,902,000	2,991,000	2,342,912
24	Mar 20, 2026 22:41	102,422	63,996,129	34,905,000	2,991,000	2,424,832
25	Mar 20, 2026 22:38	102,511	61,437,205	34,935,000	2,994,000	2,424,832
26	Mar 20, 2026 22:45	102,730	63,388,353	36,010,000	2,000,000	2,342,912
27	Mar 20, 2026 22:40	102,946	62,179,553	35,083,000	3,007,000	2,342,912
28	Mar 20, 2026 22:45	103,073	64,293,044	36,130,000	2,007,000	2,408,448
29	Mar 20, 2026 22:43	103,238	63,883,405	36,188,000	2,010,000	2,342,912
30	Mar 20, 2026 22:43	103,338	61,533,063	36,223,000	2,012,000	2,342,912

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