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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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 5, 2026 01:36

olliecrow

Error

Source Code

Source code access is restricted. Log in to request access.

Challenge History

Date	Challenger	Cost	Type	Status
Jul 7, 2026 05:07	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 7, 2026 05:08	0	47,848,691	37,404,000	1,021,000	2,113,536	expected "74600294196621100 ", got "47750737508863276 "
2	Jul 7, 2026 05:08	0	47,293,154	36,849,000	1,025,000	2,113,536	expected "74600294196621100 ", got "46968285401571884 "
3	Jul 7, 2026 05:08	0	48,566,531	38,046,000	1,025,000	2,113,536	expected "74600294196621100 ", got "47749509277578028 "
4	Mar 4, 2026 23:58	5,209	69,403,239	41,225,000	2,011,000	2,338,816
5	Mar 4, 2026 23:58	5,223	69,747,040	39,318,000	4,032,000	2,351,104
6	Mar 4, 2026 23:58	5,235	66,468,126	41,427,000	2,020,000	2,424,832
7	Mar 4, 2026 23:58	5,243	67,830,191	40,481,000	3,036,000	2,396,160
8	Mar 4, 2026 23:58	5,278	74,674,883	40,822,000	2,987,000	2,379,776
9	Mar 4, 2026 23:58	5,298	73,916,255	40,978,000	2,998,000	2,273,280
10	Mar 4, 2026 23:54	5,300	72,617,373	40,990,000	2,999,000	2,494,464
11	Mar 5, 2026 01:36	5,307	72,220,919	42,048,000	2,002,000	2,330,624
12	Mar 4, 2026 23:58	5,407	71,125,433	43,879,000	997,000	2,310,144
13	Mar 4, 2026 23:54	5,421	70,593,859	43,992,000	999,000	2,338,816
14	Mar 4, 2026 23:58	5,428	70,606,104	42,048,000	3,003,000	2,383,872
15	Mar 4, 2026 23:58	5,439	74,392,153	42,131,000	3,009,000	2,428,928
16	Mar 4, 2026 23:54	5,467	76,061,604	43,363,000	2,016,000	2,379,776
17	Mar 5, 2026 01:36	5,591	76,732,134	43,379,000	3,026,000	2,301,952
18	Mar 4, 2026 23:54	5,596	72,292,558	43,421,000	3,029,000	2,334,720
19	Mar 5, 2026 01:36	5,596	75,013,761	43,418,000	3,029,000	2,428,928
20	Mar 4, 2026 23:54	5,612	75,030,067	45,566,000	1,012,000	2,347,008
21	Mar 4, 2026 23:54	5,658	77,370,973	42,964,000	3,996,000	2,301,952
22	Mar 4, 2026 23:54	5,671	80,153,636	40,057,000	7,010,000	2,338,816
23	Mar 4, 2026 23:58	5,687	71,771,815	44,188,000	3,012,000	2,494,464
24	Mar 4, 2026 23:54	5,694	78,475,682	46,257,000	1,005,000	2,338,816
25	Mar 5, 2026 01:36	5,746	75,948,273	44,646,000	3,044,000	2,322,432
26	Mar 4, 2026 23:54	5,759	74,719,625	44,809,000	2,987,000	2,473,984
27	Mar 4, 2026 23:54	5,759	72,156,509	45,808,000	1,991,000	2,433,024
28	Mar 4, 2026 23:54	5,772	79,969,752	40,924,000	6,987,000	2,416,640
29	Mar 5, 2026 01:36	5,792	76,821,977	44,069,000	4,006,000	2,273,280
30	Mar 4, 2026 23:54	5,821	72,885,252	46,302,000	2,013,000	2,449,408
31	Mar 4, 2026 23:58	5,853	73,514,685	45,542,000	3,036,000	2,490,368
32	Mar 5, 2026 01:36	5,855	85,470,377	46,571,000	2,024,000	2,404,352
33	Mar 4, 2026 23:58	5,897	73,586,882	45,948,000	2,996,000	2,490,368

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