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.

Back to listSep 15, 2021 17:39

piculScore: 73,695Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 15, 2021 17:36	73,389	50,382,960	26,149,000	1,005,000	2,289,664
2	Sep 15, 2021 17:43	73,392	51,921,744	25,144,000	2,011,000	2,289,664
3	Sep 15, 2021 17:36	73,397	51,676,046	25,146,000	2,011,000	2,371,584
4	Sep 15, 2021 17:43	73,422	53,738,210	25,154,000	2,012,000	2,289,664
5	Sep 15, 2021 17:36	73,441	53,384,652	25,161,000	2,012,000	2,523,136
6	Sep 15, 2021 17:36	73,465	54,149,445	25,169,000	2,013,000	2,289,664
7	Sep 15, 2021 17:39	73,514	53,336,013	25,186,000	2,014,000	2,519,040
8	Sep 15, 2021 17:36	73,516	49,874,874	26,194,000	1,007,000	2,289,664
9	Sep 15, 2021 17:43	73,570	50,757,263	26,213,000	1,008,000	2,523,136
10	Sep 15, 2021 17:39	73,581	51,996,504	25,209,000	2,016,000	2,289,664
11	Sep 15, 2021 17:39	73,586	49,364,771	25,211,000	2,016,000	2,523,136
12	Sep 15, 2021 17:36	73,605	49,402,998	26,226,000	1,008,000	2,265,088
13	Sep 15, 2021 17:39	73,608	49,921,470	25,218,000	2,017,000	2,371,584
14	Sep 15, 2021 17:43	73,619	55,085,123	25,222,000	2,017,000	2,289,664
15	Sep 15, 2021 17:43	73,638	49,750,594	26,237,000	1,009,000	2,523,136
16	Sep 15, 2021 17:36	73,654	53,309,920	25,234,000	2,018,000	2,289,664
17	Sep 15, 2021 17:43	73,654	51,633,205	25,234,000	2,018,000	2,289,664
18	Sep 15, 2021 17:43	73,673	52,075,699	25,240,000	2,019,000	2,523,136
19	Sep 15, 2021 17:36	73,695	49,705,997	26,258,000	1,009,000	2,519,040
20	Sep 15, 2021 17:39	73,697	50,681,391	25,249,000	2,019,000	2,289,664
21	Sep 15, 2021 17:43	73,719	58,654,844	25,256,000	2,020,000	2,289,664
22	Sep 15, 2021 17:39	73,735	51,049,466	25,262,000	2,020,000	2,289,664
23	Sep 15, 2021 17:39	73,849	50,324,342	25,300,000	2,024,000	2,519,040
24	Sep 15, 2021 17:43	73,878	50,976,553	25,311,000	2,024,000	2,289,664
25	Sep 15, 2021 17:36	73,973	52,441,479	25,343,000	2,027,000	2,523,136
26	Sep 15, 2021 17:39	74,057	50,640,296	26,387,000	1,014,000	2,527,232
27	Sep 15, 2021 17:39	74,238	57,761,540	26,451,000	1,017,000	2,519,040
28	Sep 15, 2021 17:39	75,309	102,531,041	27,864,215	0	2,260,992
29	Sep 15, 2021 17:43	75,440	97,218,611	27,912,918	0	2,256,896
30	Sep 15, 2021 17:36	75,536	89,378,491	27,948,221	0	2,260,992
31	Sep 15, 2021 17:39	75,567	105,832,484	27,959,613	0	2,265,088
32	Sep 15, 2021 17:36	75,647	94,916,031	27,989,333	0	2,252,800
33	Sep 15, 2021 17:43	75,662	93,537,164	27,995,016	0	2,256,896
34	Sep 15, 2021 17:36	75,734	101,539,043	28,021,677	0	2,252,800
35	Sep 15, 2021 17:43	75,772	84,272,570	28,035,579	0	2,252,800
36	Sep 15, 2021 17:39	76,187	93,213,269	28,189,264	0	2,260,992

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