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.

Date	Author	Language	Status	Score
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
Jan 17, 2026 01:48	Josu San Martin	CPPg++13.3.0	Success	69,454
Jan 17, 2026 01:37	Josu San Martin	CPPg++13.3.0	Success	69,432
Jan 17, 2026 01:31	Josu San Martin	RUSTrust-1.92.0	Success	70,208
Jan 17, 2026 01:12	Josu San Martin	RUSTrust-1.92.0	Success	70,243
Jan 13, 2026 21:45	Josu San Martin	RUSTrust-1.92.0	Success	69,308
Jan 13, 2026 03:16	Josu San Martin	CPPg++13.3.0	Success	69,503
Jan 13, 2026 03:08	Josu San Martin	CPPg++13.3.0	Success	69,176
Jan 13, 2026 02:58	Josu San Martin	CPPg++13.3.0	Success	68,886
Jan 13, 2026 02:57	Josu San Martin	CPPg++13.3.0	Success	537,524
Jan 13, 2026 02:56	Josu San Martin	CPPg++13.3.0	Success	69,222
Jan 13, 2026 02:55	Josu San Martin	CPPg++13.3.0	Success	79,665
Jan 13, 2026 02:52	Josu San Martin	CPPg++13.3.0	Error
Jan 13, 2026 02:50	Josu San Martin	CPPg++13.3.0	Success	69,792
Jan 13, 2026 02:43	Josu San Martin	CPPg++13.3.0	Success	68,943
Jan 13, 2026 02:41	Josu San Martin	CPPclang++18.1.3	Success	70,416
Jan 13, 2026 02:41	Josu San Martin	CPPclang++18.1.3	Success	70,300
Jan 13, 2026 02:37	Josu San Martin	CPPg++13.3.0	Success	70,427
Jan 13, 2026 02:15	Josu San Martin	RUSTrust-1.92.0	Success	69,030
Jan 13, 2026 02:11	Josu San Martin	RUSTrust-1.92.0	Success	68,746
Jan 13, 2026 02:10	Josu San Martin	RUSTrust-1.92.0	Success	68,708+0.66 RP
Jan 13, 2026 02:02	Josu San Martin	RUSTrust-1.92.0	Success	69,397
Jan 13, 2026 02:02	Josu San Martin	RUSTrust-1.92.0	Success	69,797
Jan 13, 2026 02:02	Josu San Martin	RUSTrust-1.92.0	Success	69,878
Jan 13, 2026 02:02	Josu San Martin	RUSTrust-1.92.0	Error
Jan 13, 2026 01:34	Josu San Martin	RUSTrust-1.92.0	Success	70,441
Jan 13, 2026 01:32	Josu San Martin	RUSTrust-1.92.0	Success	71,257
Jan 13, 2026 01:32	Josu San Martin	RUSTrust-1.92.0	Success	71,373
Jan 13, 2026 01:32	Josu San Martin	RUSTrust-1.92.0	Success	71,684
Jan 13, 2026 01:31	Josu San Martin	RUSTrust-1.92.0	Success	71,589
Jan 13, 2026 01:31	Josu San Martin	RUSTrust-1.92.0	Success	72,546
Jan 13, 2026 01:31	Josu San Martin	RUSTrust-1.92.0	Success	73,135
Jan 13, 2026 01:30	Josu San Martin	RUSTrust-1.92.0	Success	71,484
Jan 13, 2026 01:21	Josu San Martin	CPPg++13.3.0	Success	71,246
Jan 13, 2026 01:14	Josu San Martin	RUSTrust-1.92.0	Success	68,938
Jan 13, 2026 01:14	Josu San Martin	RUSTrust-1.92.0	Success	141,368
Jan 13, 2026 01:12	Josu San Martin	RUSTrust-1.92.0	Success	69,019
Jan 13, 2026 01:01	Josu San Martin	RUSTrust-1.92.0	Success	68,884
Jan 13, 2026 01:00	Josu San Martin	RUSTrust-1.92.0	Success	71,265
Jan 13, 2026 01:00	Josu San Martin	RUSTrust-1.92.0	Success	68,865+0.39 RP
Jan 13, 2026 00:49	Josu San Martin	RUSTrust-1.92.0	Success	68,959+0.03 RP
Jan 13, 2026 00:48	Josu San Martin	RUSTrust-1.92.0	Success	69,295
Jan 13, 2026 00:44	Josu San Martin	RUSTrust-1.92.0	Success	69,081
Jan 13, 2026 00:41	Josu San Martin	RUSTrust-1.92.0	Success	69,005
Jan 13, 2026 00:40	Josu San Martin	RUSTrust-1.92.0	Success	69,246
Jan 13, 2026 00:39	Josu San Martin	RUSTrust-1.92.0	Success	68,973+0.54 RP
Jan 13, 2026 00:29	Josu San Martin	RUSTrust-1.92.0	Success	69,232
Jan 13, 2026 00:28	Josu San Martin	RUSTrust-1.92.0	Success	69,230+0.53 RP
Jan 13, 2026 00:27	Josu San Martin	RUSTrust-1.92.0	Success	69,884
Jan 13, 2026 00:26	Josu San Martin	RUSTrust-1.92.0	Success	78,346
Jan 13, 2026 00:25	Josu San Martin	RUSTrust-1.92.0	Success	69,486+0.60 RP
Jan 13, 2026 00:23	Josu San Martin	RUSTrust-1.92.0	Success	69,778+0.19 RP
Jan 13, 2026 00:21	Josu San Martin	RUSTrust-1.92.0	Success	69,873+0.53 RP
Jan 13, 2026 00:15	Josu San Martin	RUSTrust-1.92.0	Success	70,189
Jan 13, 2026 00:13	Josu San Martin	RUSTrust-1.92.0	Success	70,414
Jan 13, 2026 00:11	Josu San Martin	RUSTrust-1.92.0	Success	71,784
Jan 13, 2026 00:10	Josu San Martin	RUSTrust-1.92.0	Success	70,135+0.05 RP
Jan 13, 2026 00:10	Josu San Martin	RUSTrust-1.92.0	Success	70,241
Jan 13, 2026 00:08	Josu San Martin	RUSTrust-1.92.0	Success	70,219
Jan 13, 2026 00:08	Josu San Martin	RUSTrust-1.92.0	Success	70,159+0.25 RP
Jan 13, 2026 00:08	Josu San Martin	RUSTrust-1.92.0	Success	72,011
Jan 13, 2026 00:07	Josu San Martin	RUSTrust-1.92.0	Success	70,395
Jan 13, 2026 00:07	Josu San Martin	RUSTrust-1.92.0	Success	70,308
Jan 13, 2026 00:07	Josu San Martin	RUSTrust-1.92.0	Success	71,908
Jan 13, 2026 00:02	Josu San Martin	RUSTrust-1.92.0	Success	74,184
Jan 13, 2026 00:01	Josu San Martin	CPPg++13.3.0	Success	109,057
Jan 13, 2026 00:01	Josu San Martin	CPPg++13.3.0	Success	71,373
Jan 12, 2026 23:34	Josu San Martin	CPPg++13.3.0	Success	73,238
Jan 12, 2026 22:06	Josu San Martin	RUSTrust-1.92.0	Error
Jan 12, 2026 22:02	Josu San Martin	RUSTrust-1.92.0	Error
Jan 12, 2026 21:59	Josu San Martin	RUSTrust-1.92.0	Success	71,570
Jan 12, 2026 20:23	Josu San Martin	RUSTrust-1.92.0	Success	72,630

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