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: 102,262Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 22:58	100,703	59,171,893	34,239,000	3,021,000	2,342,912
2	Mar 20, 2026 22:57	100,778	62,170,441	35,273,000	2,015,000	2,420,736
3	Mar 20, 2026 22:55	101,157	65,228,862	35,405,000	2,023,000	2,412,544
4	Mar 20, 2026 22:57	101,408	58,822,812	34,479,000	3,042,000	2,416,640
5	Mar 20, 2026 22:54	101,427	60,082,908	36,514,000	1,014,000	2,412,544
6	Mar 20, 2026 22:59	101,616	62,642,070	36,582,000	1,016,000	2,404,352
7	Mar 20, 2026 22:59	101,638	66,457,807	36,590,000	1,016,000	2,342,912
8	Mar 20, 2026 22:59	101,659	63,997,992	35,581,000	2,033,000	2,416,640
9	Mar 20, 2026 22:54	101,659	63,966,018	35,581,000	2,033,000	2,342,912
10	Mar 20, 2026 22:58	101,716	63,463,136	35,601,000	2,034,000	2,416,640
11	Mar 20, 2026 22:54	101,719	65,014,638	35,602,000	2,034,000	2,416,640
12	Mar 20, 2026 22:56	101,765	64,404,100	35,618,000	2,035,000	2,342,912
13	Mar 20, 2026 22:54	102,200	60,189,610	34,829,000	2,985,000	2,408,448
14	Mar 20, 2026 22:57	102,216	67,485,684	35,830,000	1,990,000	2,342,912
15	Mar 20, 2026 22:55	102,243	63,421,426	34,844,000	2,986,000	2,342,912
16	Mar 20, 2026 22:54	102,259	67,944,424	35,845,000	1,991,000	2,342,912
17	Mar 20, 2026 22:54	102,262	69,959,953	36,842,000	995,000	2,342,912
18	Mar 20, 2026 22:56	102,265	65,163,074	36,843,000	995,000	2,416,640
19	Mar 20, 2026 22:55	102,270	63,690,840	34,853,000	2,987,000	2,412,544
20	Mar 20, 2026 22:59	102,303	64,174,700	35,860,000	1,992,000	2,342,912
21	Mar 20, 2026 22:57	102,332	61,059,519	35,871,000	1,992,000	2,404,352
22	Mar 20, 2026 22:55	102,397	65,250,946	34,896,000	2,991,000	2,342,912
23	Mar 20, 2026 22:59	102,484	72,456,021	35,924,000	1,995,000	2,408,448
24	Mar 20, 2026 22:58	102,503	62,123,053	34,932,000	2,994,000	2,420,736
25	Mar 20, 2026 22:54	102,535	72,344,888	35,942,000	1,996,000	2,416,640
26	Mar 20, 2026 22:59	102,608	66,154,424	35,967,000	1,998,000	2,416,640
27	Mar 20, 2026 22:57	102,997	64,672,516	36,104,000	2,005,000	2,342,912
28	Mar 20, 2026 22:54	103,100	64,936,635	36,140,000	2,007,000	2,342,912
29	Mar 20, 2026 22:55	103,768	62,783,445	36,374,000	2,020,000	2,424,832
30	Mar 20, 2026 22:57	103,938	62,236,211	35,421,000	3,036,000	2,322,432
31	Mar 20, 2026 22:55	104,635	69,867,115	36,678,000	2,037,000	2,408,448
32	Mar 20, 2026 22:56	107,903	86,113,082	37,928,000	1,996,000	2,347,008
33	Mar 20, 2026 22:54	108,014	67,891,583	36,968,000	2,997,000	2,420,736

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