Parse integers

Compute the sum of integers read from STDIN as fast as possible.

Input: 50 000 000 lines, each containing one integer in the range [0; 2147483647].

Output: The uint64 sum of all numbers, printed as a decimal string.

Note: Integer overflow is expected – use a 64-bit accumulator.

Restrictions:30s512Mb 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 21, 2026 18:16

olliecrowScore: 5,873Success

Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Apr 21, 2026 18:35	Yuriy Lyfenko	10.00	Custom	Solution Held

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Apr 1, 2026 08:43	5,563	67,039,441	42,161,000	4,015,000	2,449,408
2	Mar 21, 2026 18:29	5,653	68,175,657	43,929,000	2,995,000	2,347,008
3	Mar 21, 2026 18:32	5,656	73,911,371	39,951,000	6,991,000	2,437,120
4	Mar 21, 2026 18:29	5,714	69,398,148	45,412,000	2,018,000	2,408,448
5	Apr 1, 2026 08:43	5,733	75,829,703	44,549,000	3,037,000	2,297,856
6	Apr 1, 2026 08:43	5,741	79,608,942	42,585,000	5,069,000	2,453,504
7	Mar 21, 2026 18:22	5,761	76,414,651	45,825,000	1,992,000	2,363,392
8	Mar 21, 2026 17:34	5,763	68,274,216	46,813,000	1,017,000	2,420,736
9	Mar 21, 2026 17:55	5,767	70,627,427	45,871,000	1,994,000	2,383,872
10	Mar 21, 2026 17:55	5,772	69,387,665	45,910,000	1,996,000	2,506,752
11	Mar 21, 2026 18:29	5,802	70,808,965	45,145,000	3,009,000	2,400,256
12	Mar 21, 2026 17:58	5,817	75,650,106	44,255,000	4,023,000	2,473,984
13	Mar 21, 2026 17:43	5,826	74,435,054	46,338,000	2,014,000	2,359,296
14	Mar 21, 2026 18:11	5,832	68,267,195	46,391,000	2,017,000	2,506,752
15	Mar 21, 2026 18:32	5,835	72,717,059	47,422,000	1,008,000	2,310,144
16	Mar 21, 2026 17:34	5,839	72,406,738	45,432,000	3,028,000	2,396,160
17	Mar 21, 2026 18:07	5,840	75,291,295	45,444,000	3,029,000	2,277,376
18	Mar 21, 2026 17:43	5,842	75,903,856	44,451,000	4,041,000	2,289,664
19	Mar 21, 2026 18:22	5,857	79,211,935	47,597,000	1,012,000	2,322,432
20	Mar 21, 2026 18:07	5,873	74,270,745	45,762,000	2,984,000	2,424,832
21	Mar 21, 2026 17:58	5,880	76,366,145	47,812,000	996,000	2,338,816
22	Mar 21, 2026 18:07	5,883	79,039,653	45,840,000	2,989,000	2,326,528
23	Mar 21, 2026 18:09	5,885	71,083,504	46,852,000	1,993,000	2,322,432
24	Mar 21, 2026 18:09	5,894	75,278,243	43,928,000	4,991,000	2,400,256
25	Mar 21, 2026 17:43	5,897	74,417,812	47,946,000	998,000	2,453,504
26	Mar 21, 2026 17:58	5,904	70,223,765	47,002,000	2,000,000	2,318,336
27	Mar 21, 2026 18:16	5,916	77,999,576	45,097,000	4,008,000	2,383,872
28	Mar 21, 2026 17:58	5,916	80,652,821	45,091,000	4,008,000	2,363,392
29	Mar 21, 2026 17:58	5,916	70,983,301	47,097,000	2,004,000	2,383,872
30	Mar 21, 2026 18:22	5,924	71,523,146	46,159,000	3,010,000	2,289,664
31	Mar 21, 2026 18:11	5,960	74,754,742	47,451,000	2,019,000	2,371,584
32	Mar 21, 2026 17:34	5,969	73,154,356	48,532,000	1,011,000	2,314,240
33	Mar 21, 2026 18:09	5,979	80,040,796	46,591,000	3,038,000	2,383,872
34	Mar 21, 2026 18:16	6,000	78,115,741	44,822,000	4,980,000	2,400,256
35	Mar 21, 2026 18:16	6,011	70,997,798	45,897,000	3,991,000	2,363,392
36	Mar 21, 2026 18:11	6,022	79,632,302	44,986,000	4,998,000	2,371,584
37	Mar 21, 2026 17:58	6,109	70,341,172	47,663,000	3,042,000	2,387,968
38	Mar 21, 2026 17:55	6,161	72,813,149	46,126,000	5,013,000	2,359,296
39	Mar 21, 2026 18:32	6,318	78,722,768	49,415,000	3,025,000	2,482,176

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