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: 84,049Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Sep 18, 2023 13:01	82,573	52,687,262	29,534,000	1,018,000	2,523,136
2	Sep 18, 2023 13:01	82,914	56,820,869	29,656,000	1,022,000	2,269,184
3	Sep 20, 2023 16:29	82,976	60,195,633	29,678,000	1,023,000	2,289,664
4	Sep 18, 2023 13:01	82,984	58,763,947	29,681,000	1,023,000	2,289,664
5	Sep 18, 2023 13:07	83,303	60,774,990	30,822,000	0	2,289,664
6	Sep 18, 2023 12:52	83,441	60,407,019	28,882,000	1,991,000	2,289,664
7	Sep 20, 2023 16:29	83,459	55,001,400	28,888,000	1,992,000	2,527,232
8	Sep 18, 2023 13:07	83,468	56,941,635	28,891,000	1,992,000	2,277,376
9	Sep 18, 2023 13:01	83,481	58,195,535	29,892,000	996,000	2,269,184
10	Sep 20, 2023 16:29	83,481	59,458,567	29,859,000	1,029,000	2,289,664
11	Sep 18, 2023 13:01	83,511	52,745,905	29,903,000	996,000	2,277,376
12	Sep 18, 2023 13:07	83,514	56,663,187	28,907,000	1,993,000	2,273,280
13	Sep 18, 2023 13:07	83,595	55,001,396	28,935,000	1,995,000	2,281,472
14	Sep 18, 2023 12:52	83,632	53,564,483	28,948,000	1,996,000	2,289,664
15	Sep 18, 2023 13:07	83,651	53,386,334	29,953,000	998,000	2,289,664
16	Sep 18, 2023 13:07	83,700	54,117,560	28,971,000	1,998,000	2,531,328
17	Sep 18, 2023 12:52	83,711	54,011,792	28,975,000	1,998,000	2,289,664
18	Sep 18, 2023 13:01	83,784	57,932,853	29,000,000	2,000,000	2,289,664
19	Sep 20, 2023 16:29	83,803	57,477,590	29,007,000	2,000,000	2,289,664
20	Sep 20, 2023 16:29	83,803	54,750,100	29,007,000	2,000,000	2,269,184
21	Sep 18, 2023 12:52	83,819	55,662,638	29,013,000	2,000,000	2,277,376
22	Sep 18, 2023 13:07	83,827	53,822,635	29,015,000	2,001,000	2,269,184
23	Sep 20, 2023 16:29	83,884	52,086,957	30,036,000	1,001,000	2,289,664
24	Sep 18, 2023 13:01	84,041	51,974,525	29,089,000	2,006,000	2,289,664
25	Sep 18, 2023 12:52	84,049	50,914,627	30,095,000	1,003,000	2,285,568
26	Sep 18, 2023 13:07	84,084	52,807,618	29,104,000	2,007,000	2,289,664
27	Sep 18, 2023 12:52	84,100	54,039,704	30,114,000	1,003,000	2,277,376
28	Sep 20, 2023 16:29	84,146	57,229,767	30,130,000	1,004,000	2,277,376
29	Sep 20, 2023 16:29	84,165	52,923,465	29,132,000	2,009,000	2,355,200
30	Sep 18, 2023 12:52	84,178	54,618,728	29,137,000	2,009,000	2,289,664
31	Sep 18, 2023 13:01	84,243	54,325,408	30,165,000	1,005,000	2,289,664
32	Sep 20, 2023 16:29	84,346	53,692,310	29,195,000	2,013,000	2,289,664
33	Sep 18, 2023 12:52	84,349	53,733,620	29,196,000	2,013,000	2,289,664
34	Sep 18, 2023 13:07	84,503	57,290,260	30,258,000	1,008,000	2,289,664
35	Sep 18, 2023 13:01	84,511	59,600,533	29,252,000	2,017,000	2,273,280
36	Sep 18, 2023 12:52	84,627	64,938,694	29,292,000	2,020,000	2,289,664
37	Sep 18, 2023 12:52	85,463	106,679,873	31,621,193	0	2,260,992
38	Sep 18, 2023 12:52	85,573	100,211,379	31,661,837	0	2,252,800
39	Sep 18, 2023 13:07	85,583	106,360,986	31,665,646	0	2,252,800
40	Sep 18, 2023 13:01	85,681	106,202,196	31,701,870	0	2,273,280
41	Sep 20, 2023 16:29	85,704	104,209,843	31,710,485	0	2,260,992
42	Sep 20, 2023 16:29	85,808	103,524,325	31,749,056	0	2,265,088
43	Sep 18, 2023 13:07	85,905	101,046,235	31,784,696	0	2,269,184
44	Sep 18, 2023 13:01	85,970	110,136,045	31,808,948	0	2,265,088
45	Sep 18, 2023 13:07	86,041	110,172,778	31,835,296	0	2,265,088
46	Sep 18, 2023 13:01	86,407	104,329,074	31,970,596	0	2,265,088
47	Sep 20, 2023 16:29	86,523	97,556,577	32,013,567	0	2,269,184
48	Sep 18, 2023 12:52	86,683	106,825,303	32,072,894	0	2,256,896

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