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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mmalczakScore: 145,124Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 16, 2023 16:45	129,537	118,132,402	47,928,798	0	2,269,184
2	Sep 16, 2023 16:45	129,736	130,982,110	48,002,317	0	2,269,184
3	Sep 16, 2023 16:45	129,784	100,563,959	48,019,933	0	2,256,896
4	Sep 16, 2023 16:44	129,784	109,587,460	48,019,965	0	2,260,992
5	Sep 16, 2023 16:44	129,857	104,919,150	48,047,257	0	2,260,992
6	Sep 16, 2023 16:45	130,478	124,405,875	48,276,718	0	2,269,184
7	Sep 16, 2023 16:45	130,938	114,250,537	48,447,207	0	2,265,088
8	Sep 16, 2023 16:45	131,290	104,442,392	48,577,297	0	2,260,992
9	Sep 16, 2023 16:44	134,438	111,141,916	49,741,946	0	2,269,184
10	Sep 16, 2023 16:44	140,203	74,888,220	49,880,000	1,995,000	2,273,280
11	Sep 16, 2023 16:44	140,227	75,706,053	51,884,000	0	2,289,664
12	Sep 16, 2023 16:45	143,076	76,977,918	50,941,000	1,997,000	2,269,184
13	Sep 16, 2023 16:45	143,195	79,571,387	50,983,000	1,999,000	2,289,664
14	Sep 16, 2023 16:44	143,392	76,882,994	53,055,000	0	2,527,232
15	Sep 16, 2023 16:45	143,935	76,040,818	51,247,000	2,009,000	2,269,184
16	Sep 16, 2023 16:45	144,389	75,724,148	53,424,000	0	2,277,376
17	Sep 16, 2023 16:45	144,827	80,376,062	52,575,000	1,011,000	2,289,664
18	Sep 16, 2023 16:45	144,870	79,597,017	52,591,000	1,011,000	2,289,664
19	Sep 16, 2023 16:44	145,124	79,759,912	51,708,000	1,988,000	2,289,664
20	Sep 16, 2023 16:44	145,149	87,138,244	53,705,000	0	2,273,280
21	Sep 16, 2023 16:44	145,400	81,042,848	51,806,000	1,992,000	2,289,664
22	Sep 16, 2023 16:44	145,484	80,766,039	52,833,000	996,000	2,289,664
23	Sep 16, 2023 16:45	145,527	84,929,556	51,851,000	1,994,000	2,289,664
24	Sep 16, 2023 16:45	145,657	75,917,882	51,897,000	1,996,000	2,289,664
25	Sep 16, 2023 16:44	145,741	78,164,472	52,926,000	998,000	2,289,664
26	Sep 16, 2023 16:45	145,838	75,265,618	52,961,000	999,000	2,281,472
27	Sep 16, 2023 16:45	145,868	79,357,576	52,972,000	999,000	2,289,664
28	Sep 16, 2023 16:45	146,232	79,856,876	53,105,000	1,001,000	2,289,664
29	Sep 16, 2023 16:45	146,257	79,289,468	52,111,000	2,004,000	2,289,664
30	Sep 16, 2023 16:45	146,481	75,343,074	52,191,000	2,007,000	2,281,472
31	Sep 16, 2023 16:45	146,732	80,071,041	53,286,000	1,005,000	2,289,664
32	Sep 16, 2023 16:45	147,097	76,869,250	53,419,000	1,007,000	2,289,664
33	Sep 16, 2023 16:45	147,216	78,082,723	53,462,000	1,008,000	2,273,280
34	Sep 16, 2023 16:44	148,165	80,431,998	53,825,000	996,000	2,289,664
35	Sep 16, 2023 16:45	148,168	84,579,796	53,826,000	996,000	2,531,328
36	Sep 16, 2023 16:45	148,265	80,247,291	53,861,000	997,000	2,277,376

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