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 listMar 20, 2026 22:16

Josu San MartinScore: 62,446Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 22:19	61,800	48,514,999	20,878,000	1,988,000	2,453,504
2	Mar 20, 2026 21:20	61,830	52,498,380	20,888,000	1,989,000	2,277,376
3	Mar 20, 2026 22:19	61,846	48,676,913	20,894,000	1,989,000	2,535,424
4	Mar 20, 2026 21:20	61,900	49,357,596	20,912,000	1,991,000	2,277,376
5	Mar 20, 2026 21:20	61,914	48,744,911	20,916,000	1,992,000	2,449,408
6	Mar 20, 2026 21:20	61,970	51,753,068	20,936,000	1,993,000	2,445,312
7	Mar 21, 2026 05:57	61,970	49,406,099	21,887,000	1,042,000	2,441,216
8	Mar 20, 2026 21:20	61,984	48,099,200	20,940,000	1,994,000	2,539,520
9	Mar 20, 2026 21:43	62,024	48,973,732	20,954,000	1,995,000	2,441,216
10	Mar 20, 2026 22:20	62,043	49,650,537	20,960,000	1,996,000	2,539,520
11	Mar 20, 2026 22:19	62,078	46,784,022	21,971,000	998,000	2,531,328
12	Mar 20, 2026 22:19	62,114	51,164,449	21,983,000	999,000	2,277,376
13	Mar 20, 2026 21:43	62,116	50,232,044	20,985,000	1,998,000	2,539,520
14	Mar 21, 2026 05:57	62,119	44,202,989	20,986,000	1,998,000	2,531,328
15	Mar 20, 2026 21:20	62,141	52,888,165	20,993,000	1,999,000	2,539,520
16	Mar 20, 2026 21:20	62,168	47,661,960	22,002,000	1,000,000	2,433,024
17	Mar 20, 2026 22:19	62,230	48,138,113	21,023,000	2,002,000	2,441,216
18	Mar 20, 2026 21:20	62,295	61,093,225	21,045,000	2,004,000	2,441,216
19	Mar 20, 2026 21:20	62,295	51,970,205	21,045,000	2,004,000	2,449,408
20	Mar 20, 2026 21:43	62,378	50,057,332	21,073,000	2,007,000	2,453,504
21	Mar 20, 2026 21:44	62,405	46,896,274	21,083,000	2,007,000	2,445,312
22	Mar 20, 2026 22:19	62,446	41,142,852	22,101,000	1,004,000	2,523,136
23	Mar 20, 2026 21:44	62,468	47,039,463	21,104,000	2,009,000	2,527,232
24	Mar 21, 2026 05:57	62,522	49,889,557	21,122,000	2,011,000	2,531,328
25	Mar 20, 2026 21:44	62,797	43,859,856	21,215,000	2,020,000	2,535,424
26	Mar 20, 2026 21:44	62,930	46,722,471	22,272,000	1,012,000	2,453,504
27	Mar 20, 2026 21:44	63,392	44,819,429	22,436,000	1,019,000	2,277,376
28	Mar 20, 2026 21:44	63,676	43,773,972	22,536,000	1,024,000	2,441,216
29	Mar 20, 2026 22:20	63,951	49,659,755	22,634,000	1,028,000	2,437,120
30	Mar 20, 2026 22:20	64,119	46,242,403	23,724,000	0	2,519,040
31	Mar 20, 2026 21:44	64,130	54,398,577	21,665,000	2,063,000	2,539,520
32	Mar 20, 2026 21:40	64,235	52,345,488	22,734,000	1,033,000	2,449,408
33	Mar 20, 2026 22:19	66,114	41,222,227	23,443,000	1,019,000	2,514,944
34	Mar 20, 2026 22:16	66,154	45,015,158	23,458,000	1,019,000	2,445,312
35	Mar 20, 2026 22:19	66,981	48,695,436	22,801,000	1,982,000	2,281,472
36	Mar 20, 2026 21:44	67,278	48,134,922	23,898,000	995,000	2,277,376
37	Mar 20, 2026 21:44	67,900	53,788,158	24,119,000	1,004,000	2,277,376
38	Mar 20, 2026 21:40	68,541	58,956,361	24,385,000	975,000	2,265,088
39	Mar 20, 2026 21:40	68,981	49,677,203	25,523,000	0	2,273,280
40	Mar 20, 2026 22:16	69,084	58,495,782	23,595,000	1,966,000	2,273,280
41	Mar 20, 2026 22:16	69,651	55,020,060	24,780,000	991,000	2,273,280
42	Mar 20, 2026 22:19	70,308	55,686,742	25,085,000	929,000	2,277,376

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