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: 102,319Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 22:34	100,476	63,564,657	34,162,000	3,014,000	2,412,544
2	Mar 20, 2026 22:32	100,816	59,386,603	35,286,000	2,016,000	2,342,912
3	Mar 20, 2026 22:35	101,189	61,736,503	34,405,000	3,035,000	2,342,912
4	Mar 20, 2026 22:31	101,230	59,666,448	35,431,000	2,024,000	2,416,640
5	Mar 20, 2026 22:31	101,259	64,061,942	34,429,000	3,037,000	2,412,544
6	Mar 20, 2026 22:30	101,278	64,626,255	34,435,000	3,038,000	2,342,912
7	Mar 20, 2026 22:37	101,284	57,600,177	35,450,000	2,025,000	2,342,912
8	Mar 20, 2026 22:32	101,295	60,023,495	34,441,000	3,038,000	2,342,912
9	Mar 20, 2026 22:33	101,419	58,444,821	36,511,000	1,014,000	2,412,544
10	Mar 20, 2026 22:34	101,527	67,033,711	36,550,000	1,015,000	2,342,912
11	Mar 20, 2026 22:31	101,570	64,062,917	36,566,000	1,015,000	2,338,816
12	Mar 20, 2026 22:34	101,670	65,802,365	35,585,000	2,033,000	2,342,912
13	Mar 20, 2026 22:32	101,803	65,928,952	36,649,000	1,018,000	2,412,544
14	Mar 20, 2026 22:30	101,908	63,266,716	36,687,000	1,019,000	2,416,640
15	Mar 20, 2026 22:31	102,200	64,587,043	34,829,000	2,985,000	2,412,544
16	Mar 20, 2026 22:33	102,224	61,566,948	35,833,000	1,990,000	2,539,520
17	Mar 20, 2026 22:31	102,232	64,532,166	35,836,000	1,990,000	2,416,640
18	Mar 20, 2026 22:32	102,246	69,665,291	36,836,000	995,000	2,420,736
19	Mar 20, 2026 22:35	102,319	66,202,777	34,870,000	2,988,000	2,326,528
20	Mar 20, 2026 22:34	102,335	61,433,235	35,872,000	1,992,000	2,420,736
21	Mar 20, 2026 22:35	102,370	68,501,627	35,884,000	1,993,000	2,342,912
22	Mar 20, 2026 22:30	102,384	62,961,567	34,892,000	2,990,000	2,342,912
23	Mar 20, 2026 22:33	102,386	64,279,976	35,890,000	1,993,000	2,342,912
24	Mar 20, 2026 22:31	102,611	63,811,739	35,968,000	1,998,000	2,342,912
25	Mar 20, 2026 22:34	102,770	63,145,051	36,024,000	2,001,000	2,416,640
26	Mar 20, 2026 22:31	102,873	69,169,594	36,060,000	2,003,000	2,420,736
27	Mar 20, 2026 22:33	102,873	68,856,649	35,058,000	3,005,000	2,342,912
28	Mar 20, 2026 22:31	103,081	62,026,755	36,133,000	2,007,000	2,424,832
29	Mar 20, 2026 22:34	103,435	63,661,318	35,250,000	3,021,000	2,412,544
30	Mar 20, 2026 22:37	103,489	61,359,093	36,276,000	2,015,000	2,342,912
31	Mar 20, 2026 22:33	103,541	65,512,727	35,286,000	3,024,000	2,342,912
32	Mar 20, 2026 22:37	104,441	64,381,602	36,610,000	2,033,000	2,408,448
33	Mar 20, 2026 22:32	104,468	66,966,283	36,619,000	2,034,000	2,502,656
34	Mar 20, 2026 22:33	105,849	66,013,111	38,160,000	1,004,000	2,420,736
35	Mar 20, 2026 22:32	106,505	69,118,682	36,376,000	3,031,000	2,342,912
36	Mar 20, 2026 22:31	108,365	73,232,439	37,088,000	3,007,000	2,412,544

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