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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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.

Date	Author	Language	Status	Score
Mar 4, 2026 23:00	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 22:58	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 22:55	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 22:51	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 22:49	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 22:48	olliecrow	CPPg++13.3.0	Success	69,897
Mar 4, 2026 05:35	olliecrow	CPPg++13.3.0	Success	69,938
Mar 4, 2026 05:24	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 05:22	olliecrow	CPPg++13.3.0	Success	70,192
Mar 4, 2026 04:32	olliecrow	CPPg++13.3.0	Success	69,895+0.02 RP
Mar 4, 2026 04:25	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 04:16	olliecrow	CPPg++13.3.0	Success	69,903+0.05 RP
Mar 4, 2026 04:05	olliecrow	CPPg++13.3.0	Success	69,927
Mar 4, 2026 03:50	olliecrow	CPPg++13.3.0	Success	70,189
Mar 4, 2026 03:37	olliecrow	CPPg++13.3.0	Success	529,857
Mar 4, 2026 03:35	olliecrow	CPPg++13.3.0	Success	173,251
Mar 4, 2026 03:29	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 03:27	olliecrow	CPPg++13.3.0	Success	75,214
Mar 4, 2026 03:17	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 03:13	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 03:08	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 03:04	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:56	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:52	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:44	Josu San Martin	CSHARP9.0.13	Success	71,143+0.22 RP
Mar 4, 2026 02:41	olliecrow	CPPg++13.3.0	Success	70,035
Mar 4, 2026 02:32	Josu San Martin	CSHARP9.0.13	Success	71,254+80.70 RP
Mar 4, 2026 02:24	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:21	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:18	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:18	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 02:03	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:58	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:53	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:31	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:23	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:19	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:15	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 01:02	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 00:57	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 00:52	olliecrow	CPPg++13.3.0	Error
Mar 4, 2026 00:47	olliecrow	CPPg++13.3.0	Success	70,165
Mar 3, 2026 23:42	olliecrow	CPPg++13.3.0	Success	69,927+0.49 RP
Mar 3, 2026 23:34	olliecrow	CPPg++13.3.0	Success	70,168+0.95 RP
Mar 3, 2026 22:56	olliecrow	CPPg++13.3.0	Success	176,216
Mar 3, 2026 22:45	olliecrow	CPPg++13.3.0	Success	167,381
Mar 3, 2026 22:43	olliecrow	CPPg++13.3.0	Success	70,868
Mar 3, 2026 22:38	olliecrow	CPPg++13.3.0	Success	70,908
Mar 3, 2026 22:37	olliecrow	CPPg++13.3.0	Success	71,241
Mar 3, 2026 22:35	olliecrow	CPPg++13.3.0	Success	70,895
Mar 3, 2026 22:34	olliecrow	CPPg++13.3.0	Success	85,089
Mar 3, 2026 22:33	olliecrow	CPPclang++18.1.3	Success	72,473
Mar 3, 2026 22:32	olliecrow	CPPg++13.3.0	Success	70,641+0.04 RP
Mar 3, 2026 22:30	olliecrow	CPPg++13.3.0	Success	107,843
Mar 3, 2026 22:27	olliecrow	CPPg++13.3.0	Success	70,662+48.64 RP
Mar 3, 2026 22:24	olliecrow	CPPg++13.3.0	Success	107,665+92.88 RP
Mar 3, 2026 13:20	NoSIMD_C#	CPPclang++18.1.3	Success	174,322
Mar 3, 2026 13:17	NoSIMD_C#	CPPclang++18.1.3	Success	172,822
Mar 3, 2026 13:10	NoSIMD_C#	CPPclang++18.1.3	Error
Mar 3, 2026 13:07	NoSIMD_C#	CPPclang++18.1.3	Error
Mar 3, 2026 13:02	NoSIMD_C#	CPPclang++18.1.3	Error
Mar 3, 2026 12:54	NoSIMD_C#	CSHARP9.0.13	Success	167,657
Mar 3, 2026 12:52	NoSIMD_C#	CSHARP9.0.4	Success	167,884
Mar 3, 2026 12:48	NoSIMD_C#	CPPclang++18.1.3	Error
Feb 12, 2026 14:36	Alex Kent	CPPg++13.3.0	Success	500,141+0.06 RP
Feb 11, 2026 14:04	Alex Kent	CPPg++13.3.0	Success	504,114
Feb 11, 2026 12:41	Alex Kent	CPPg++13.3.0	Success	501,762+19.45 RP
Feb 11, 2026 12:40	Alex Kent	CPPg++13.3.0	Error
Feb 11, 2026 12:13	Alex Kent	CPPg++13.3.0	Success	20,934,343+0.01 RP
Feb 11, 2026 12:11	Alex Kent	CPPclang++18.1.3	Success	21,352,097
Feb 11, 2026 12:08	Alex Kent	CPPclang++18.1.3	Success	21,302,135+0.01 RP
Feb 11, 2026 11:13	Alex Kent	CPPclang++18.1.3	Success	21,583,989+0.46 RP
Feb 11, 2026 07:01	MMis	CPPg++13.3.0	Success	107,841+75.70 RP
Feb 11, 2026 06:23	MMis	CPPg++13.3.0	Success	597,122
Feb 11, 2026 06:20	MMis	CPPg++13.3.0	Success	593,289
Feb 11, 2026 06:10	MMis	CPPg++13.3.0	Success	588,946
Feb 10, 2026 14:36	MMis	CPPg++13.3.0	Success	590,524
Feb 10, 2026 14:34	MMis	CPPg++13.3.0	Success	593,635
Feb 10, 2026 14:21	MMis	CPPg++13.3.0	Success	588,157
Feb 10, 2026 14:10	MMis	CPPg++13.3.0	Success	587,143+10.99 RP
Feb 10, 2026 13:07	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:50	MMis	CPPg++13.3.0	Success	1,654,176+1.01 RP
Feb 10, 2026 10:46	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:43	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:40	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:39	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:20	MMis	CPPg++13.3.0	Success	1,985,730+5.04 RP
Feb 10, 2026 10:11	MMis	CPPg++13.3.0	Error
Feb 10, 2026 10:08	MMis	CPPg++13.3.0	Error
Feb 5, 2026 22:55	lipapipa	CPPg++13.3.0	Success	61,770+34.64 RP
Feb 5, 2026 22:15	lipapipa	CPPg++13.3.0	Success	82,308
Feb 5, 2026 21:04	lipapipa	CPPg++13.3.0	Success	78,586+127.25 RP
Jan 28, 2026 01:10	Josu San Martin	CPPg++13.3.0	Success	129,200
Jan 17, 2026 06:17	Josu San Martin	CPPg++13.3.0	Success	68,754
Jan 17, 2026 05:00	Josu San Martin	CPPg++13.3.0	Success	68,397
Jan 17, 2026 04:41	Josu San Martin	CPPg++13.3.0	Success	68,119+1.26 RP
Jan 17, 2026 04:34	Josu San Martin	CPPg++13.3.0	Success	84,611
Jan 17, 2026 01:49	Josu San Martin	CPPg++13.3.0	Success	69,457
Jan 17, 2026 01:49	Josu San Martin	CPPg++13.3.0	Success	69,297
Jan 17, 2026 01:48	Josu San Martin	CPPg++13.3.0	Success	69,857

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