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: 102,276Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 22:12	100,462	66,696,111	34,158,000	3,013,000	2,330,624
2	Mar 20, 2026 22:09	100,473	63,849,997	34,161,000	3,014,000	2,342,912
3	Mar 20, 2026 22:08	100,600	62,085,165	35,210,000	2,012,000	2,342,912
4	Mar 20, 2026 22:12	100,673	63,204,325	35,236,000	2,013,000	2,347,008
5	Mar 20, 2026 22:09	100,727	62,359,615	35,255,000	2,014,000	2,408,448
6	Mar 20, 2026 22:08	100,746	61,221,821	34,254,000	3,022,000	2,408,448
7	Mar 20, 2026 22:11	100,814	61,188,425	34,277,000	3,024,000	2,342,912
8	Mar 20, 2026 22:08	100,911	61,697,072	34,310,000	3,027,000	2,342,912
9	Mar 20, 2026 22:13	101,111	58,713,616	34,378,000	3,033,000	2,342,912
10	Mar 20, 2026 22:10	101,135	60,253,680	34,386,000	3,034,000	2,400,256
11	Mar 20, 2026 22:11	101,459	58,484,517	36,526,000	1,014,000	2,342,912
12	Mar 20, 2026 22:08	101,473	57,025,377	36,531,000	1,014,000	2,342,912
13	Mar 20, 2026 22:12	101,484	59,882,144	35,520,000	2,029,000	2,408,448
14	Mar 20, 2026 22:13	101,616	65,894,082	35,566,000	2,032,000	2,342,912
15	Mar 20, 2026 22:11	101,822	62,589,517	35,638,000	2,036,000	2,342,912
16	Mar 20, 2026 22:07	102,249	64,995,995	35,841,000	1,991,000	2,342,912
17	Mar 20, 2026 22:08	102,270	63,700,705	34,853,000	2,987,000	2,334,720
18	Mar 20, 2026 22:11	102,270	63,884,444	34,853,000	2,987,000	2,342,912
19	Mar 20, 2026 22:08	102,276	69,290,866	34,855,000	2,987,000	2,342,912
20	Mar 20, 2026 22:10	102,284	63,599,570	34,858,000	2,987,000	2,330,624
21	Mar 20, 2026 22:08	102,346	66,139,395	35,875,000	1,993,000	2,342,912
22	Mar 20, 2026 22:13	102,351	64,039,734	35,877,000	1,993,000	2,342,912
23	Mar 20, 2026 22:07	102,435	62,461,262	35,907,000	1,994,000	2,400,256
24	Mar 20, 2026 22:07	102,497	63,660,883	35,928,000	1,996,000	2,400,256
25	Mar 20, 2026 22:11	102,586	62,549,801	34,961,000	2,996,000	2,408,448
26	Mar 20, 2026 22:09	102,595	61,727,434	35,963,000	1,997,000	2,342,912
27	Mar 20, 2026 22:12	102,878	67,746,699	36,062,000	2,003,000	2,342,912
28	Mar 20, 2026 22:08	102,927	62,544,106	36,079,000	2,004,000	2,342,912
29	Mar 20, 2026 22:07	103,168	67,106,982	36,163,000	2,009,000	2,342,912
30	Mar 20, 2026 22:11	103,173	70,302,665	35,161,000	3,013,000	2,342,912
31	Mar 20, 2026 22:07	103,205	65,149,263	36,177,000	2,009,000	2,412,544
32	Mar 20, 2026 22:12	103,303	61,305,564	36,211,000	2,011,000	2,408,448
33	Mar 20, 2026 22:07	103,589	60,680,958	36,311,000	2,017,000	2,342,912
34	Mar 20, 2026 22:10	103,641	56,101,161	36,329,000	2,018,000	2,326,528
35	Mar 20, 2026 22:08	105,130	67,548,176	37,901,000	997,000	2,342,912
36	Mar 20, 2026 22:12	106,881	72,218,302	38,532,000	1,014,000	2,338,816

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