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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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Nov 28, 2024 18:45	0	0	0	0	0	Error: expected "429496463827 ", got "412316614377 "	stderr
2	Nov 28, 2024 18:45	0	0	0	0	0	Error: expected "429496436485 ", got "369366966013 "	stderr
3	Nov 28, 2024 18:42	0	0	0	0	0	Error: expected "429496514411 ", got "429496511138 "	stderr
4	Nov 28, 2024 18:42	0	0	0	0	0	Error: expected "429496401124 ", got "292057631460 "	stderr
5	Nov 28, 2024 18:35	0	0	0	0	0	Error: expected "429496520609 ", got "429496517652 "	stderr
6	Nov 28, 2024 18:35	0	0	0	0	0	Error: expected "429496508545 ", got "420906580323 "	stderr
7	Nov 28, 2024 18:35	0	0	0	0	0	Error: expected "429496531707 ", got "429496528723 "	stderr
8	Nov 28, 2024 18:35	0	0	0	0	0	Error: expected "429496502012 ", got "416611615168 "	stderr
9	Nov 28, 2024 18:35	0	0	0	0	0	Error: expected "429496533671 ", got "429496533432 "	stderr
10	Nov 28, 2024 18:42	59,405	44,529,251	20,981,000	999,000	2,531,328
11	Nov 28, 2024 18:42	59,438	45,819,423	19,993,000	1,999,000	2,433,024
12	Nov 28, 2024 18:35	59,449	45,367,424	20,997,000	999,000	2,428,928
13	Nov 28, 2024 18:45	59,478	43,697,738	20,007,000	2,000,000	2,428,928
14	Nov 28, 2024 18:45	59,508	42,023,654	21,018,000	1,000,000	2,433,024
15	Nov 28, 2024 18:34	59,519	44,542,474	20,020,000	2,002,000	2,523,136
16	Nov 28, 2024 18:42	59,519	44,728,087	20,020,000	2,002,000	2,269,184
17	Nov 28, 2024 18:45	59,522	43,088,488	20,021,000	2,002,000	2,531,328
18	Nov 28, 2024 18:43	59,524	46,023,876	21,023,000	1,001,000	2,531,328
19	Nov 28, 2024 18:43	59,535	47,064,268	21,027,000	1,001,000	2,428,928
20	Nov 28, 2024 18:34	59,541	41,576,397	21,029,000	1,001,000	2,424,832
21	Nov 28, 2024 18:42	59,597	46,037,054	21,049,000	1,002,000	2,531,328
22	Nov 28, 2024 18:43	59,614	45,929,261	21,055,000	1,002,000	2,433,024
23	Nov 28, 2024 18:34	59,630	45,934,622	20,058,000	2,005,000	2,269,184
24	Nov 28, 2024 18:45	59,649	42,157,929	21,067,000	1,003,000	2,531,328
25	Nov 28, 2024 18:45	59,657	48,439,889	21,070,000	1,003,000	2,531,328
26	Nov 28, 2024 18:45	59,657	42,043,935	21,070,000	1,003,000	2,531,328
27	Nov 28, 2024 18:45	59,662	42,840,869	21,072,000	1,003,000	2,428,928
28	Nov 28, 2024 18:42	59,673	39,049,704	21,076,000	1,003,000	2,424,832
29	Nov 28, 2024 18:45	59,676	45,029,993	21,077,000	1,003,000	2,424,832
30	Nov 28, 2024 18:45	59,676	48,235,714	21,077,000	1,003,000	2,420,736
31	Nov 28, 2024 18:42	59,678	52,637,746	21,078,000	1,003,000	2,433,024
32	Nov 28, 2024 18:42	59,684	43,359,124	21,080,000	1,003,000	2,428,928
33	Nov 28, 2024 18:43	59,684	48,105,197	21,080,000	1,003,000	2,510,848
34	Nov 28, 2024 18:42	59,711	44,707,880	21,089,000	1,004,000	2,433,024
35	Nov 28, 2024 18:42	59,719	50,443,155	21,092,000	1,004,000	2,424,832
36	Nov 28, 2024 18:45	59,738	43,858,493	21,099,000	1,004,000	2,531,328
37	Nov 28, 2024 18:45	59,757	45,895,132	20,100,000	2,010,000	2,428,928
38	Nov 28, 2024 18:43	59,765	45,735,558	21,108,000	1,005,000	2,437,120
39	Nov 28, 2024 18:35	59,789	43,748,841	21,117,000	1,005,000	2,531,328
40	Nov 28, 2024 18:35	59,795	45,592,335	21,119,000	1,005,000	2,428,928
41	Nov 28, 2024 18:43	59,808	55,252,481	21,124,000	1,005,000	2,269,184
42	Nov 28, 2024 18:45	59,897	53,279,038	21,155,000	1,007,000	2,531,328
43	Nov 28, 2024 18:42	59,908	45,475,049	21,159,000	1,007,000	2,269,184
44	Nov 28, 2024 18:42	59,989	48,967,770	21,188,000	1,008,000	2,269,184
45	Nov 28, 2024 18:42	60,041	47,538,834	21,206,000	1,009,000	2,531,328

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