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: 102,235Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 21, 2026 03:40	100,627	56,759,402	34,214,000	3,018,000	2,342,912
2	Mar 21, 2026 03:32	100,646	60,031,839	34,220,000	3,019,000	2,334,720
3	Mar 21, 2026 03:29	100,781	64,964,587	34,266,000	3,023,000	2,342,912
4	Mar 21, 2026 03:46	100,827	57,641,427	35,290,000	2,016,000	2,330,624
5	Mar 21, 2026 03:39	100,827	66,967,779	34,282,000	3,024,000	2,379,776
6	Mar 21, 2026 03:31	100,922	62,442,540	35,323,000	2,018,000	2,342,912
7	Mar 21, 2026 03:29	101,105	65,473,835	34,376,000	3,033,000	2,342,912
8	Mar 21, 2026 03:41	101,143	62,800,867	34,389,000	3,034,000	2,342,912
9	Mar 21, 2026 03:46	101,143	62,968,645	35,401,000	2,022,000	2,510,848
10	Mar 21, 2026 03:31	101,178	62,768,103	34,401,000	3,035,000	2,383,872
11	Mar 21, 2026 03:34	101,189	58,763,800	35,417,000	2,023,000	2,379,776
12	Mar 21, 2026 03:35	101,389	59,593,004	35,487,000	2,027,000	2,342,912
13	Mar 21, 2026 03:42	101,411	62,623,664	35,494,000	2,028,000	2,387,968
14	Mar 21, 2026 03:44	101,505	63,757,783	35,527,000	2,030,000	2,342,912
15	Mar 21, 2026 03:45	101,551	63,779,370	35,543,000	2,031,000	2,342,912
16	Mar 21, 2026 03:34	101,578	61,359,083	35,553,000	2,031,000	2,342,912
17	Mar 21, 2026 03:35	101,605	59,099,017	35,562,000	2,032,000	2,379,776
18	Mar 21, 2026 03:31	101,608	63,522,631	36,579,000	1,016,000	2,330,624
19	Mar 21, 2026 03:35	101,676	67,291,143	36,604,000	1,016,000	2,387,968
20	Mar 21, 2026 03:38	101,735	64,323,841	35,608,000	2,034,000	2,387,968
21	Mar 21, 2026 03:37	102,038	68,359,034	35,767,000	1,987,000	2,338,816
22	Mar 21, 2026 03:40	102,103	65,679,376	33,802,000	3,976,000	2,342,912
23	Mar 21, 2026 03:39	102,189	65,143,266	34,825,000	2,985,000	2,342,912
24	Mar 21, 2026 03:42	102,219	66,809,798	35,831,000	1,990,000	2,342,912
25	Mar 21, 2026 03:31	102,235	64,797,817	34,841,000	2,986,000	2,379,776
26	Mar 21, 2026 03:30	102,297	61,551,988	34,862,000	2,988,000	2,342,912
27	Mar 21, 2026 03:46	102,300	62,459,992	35,859,000	1,992,000	2,506,752
28	Mar 21, 2026 03:30	102,305	66,242,833	35,861,000	1,992,000	2,342,912
29	Mar 21, 2026 03:38	102,381	69,818,620	34,891,000	2,990,000	2,342,912
30	Mar 21, 2026 03:37	102,408	60,325,351	34,900,000	2,991,000	2,342,912
31	Mar 21, 2026 03:41	102,414	66,161,001	35,899,000	1,994,000	2,342,912
32	Mar 21, 2026 03:32	102,430	66,820,398	35,905,000	1,994,000	2,342,912
33	Mar 21, 2026 03:44	102,697	71,846,802	34,999,000	2,999,000	2,342,912
34	Mar 21, 2026 03:41	102,732	66,941,310	36,011,000	2,000,000	2,371,584
35	Mar 21, 2026 03:45	102,749	66,941,842	35,016,000	3,001,000	2,379,776
36	Mar 21, 2026 03:39	102,795	64,532,003	36,033,000	2,001,000	2,387,968
37	Mar 21, 2026 03:31	102,830	63,492,754	36,045,000	2,002,000	2,334,720
38	Mar 21, 2026 03:34	102,835	64,438,138	36,047,000	2,002,000	2,375,680
39	Mar 21, 2026 03:40	102,876	61,645,485	35,059,000	3,005,000	2,379,776
40	Mar 21, 2026 03:30	102,908	68,884,029	35,070,000	3,006,000	2,383,872
41	Mar 21, 2026 03:38	102,959	66,789,423	35,088,000	3,007,000	2,375,680
42	Mar 21, 2026 03:42	102,965	65,636,806	35,090,000	3,007,000	2,379,776
43	Mar 21, 2026 03:37	103,024	71,374,539	36,113,000	2,006,000	2,387,968
44	Mar 21, 2026 03:45	104,216	64,876,226	37,546,000	1,014,000	2,506,752
45	Mar 21, 2026 03:44	104,262	60,863,289	37,562,000	1,015,000	2,334,720
46	Mar 21, 2026 03:29	104,351	62,163,576	37,594,000	1,016,000	2,392,064
47	Mar 21, 2026 03:32	104,381	64,592,646	36,589,000	2,032,000	2,342,912
48	Mar 21, 2026 03:31	105,100	72,705,971	36,893,000	1,994,000	2,392,064

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