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 listFeb 24, 2026 22:01

Mikołaj Uzarski

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 7, 2026 21:15	Adam Folwarczny	10.00	Custom	Solution Broken
Jul 7, 2026 04:14	Victor Mercklé	10.00	Custom	Solution Held

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 7, 2026 21:15	0	53,011,843	42,359,000	1,019,000	2,113,536	expected "27617841214539459 ", got "143956416687025110 "
2	Jul 7, 2026 21:15	0	53,061,463	42,400,000	1,015,000	2,113,536	expected "27617841214539459 ", got "143956416687025110 "
3	Jul 7, 2026 21:15	0	53,463,425	42,715,000	1,020,000	2,113,536	expected "27617841214539459 ", got "143956416687025110 "
4	Feb 24, 2026 22:01	5,097	68,258,406	40,290,000	2,014,000	2,510,848
5	Feb 24, 2026 22:02	5,109	61,342,875	40,389,000	2,019,000	2,281,472
6	Feb 24, 2026 22:01	5,111	64,815,959	41,412,000	1,010,000	2,514,944
7	Feb 24, 2026 22:01	5,114	63,232,365	41,438,000	1,010,000	2,285,568
8	Feb 24, 2026 22:01	5,117	63,793,955	41,457,000	1,011,000	2,510,848
9	Feb 24, 2026 22:01	5,118	67,202,720	41,472,000	1,011,000	2,285,568
10	Feb 24, 2026 22:01	5,120	66,737,334	41,483,000	1,011,000	2,510,848
11	Feb 24, 2026 22:01	5,121	66,859,678	42,505,000	0	2,355,200
12	Feb 24, 2026 22:01	5,122	66,360,693	41,500,000	1,012,000	2,502,656
13	Feb 24, 2026 22:01	5,124	64,914,518	41,521,000	1,012,000	2,510,848
14	Feb 24, 2026 22:01	5,124	69,134,076	41,520,000	1,012,000	2,510,848
15	Feb 24, 2026 22:01	5,125	69,898,073	42,538,000	0	2,285,568
16	Feb 24, 2026 22:01	5,126	70,351,348	39,506,000	3,038,000	2,281,472
17	Feb 24, 2026 22:02	5,126	73,131,022	41,534,000	1,013,000	2,510,848
18	Feb 24, 2026 22:01	5,130	72,503,903	41,564,000	1,013,000	2,281,472
19	Feb 24, 2026 22:01	5,133	70,672,819	41,593,000	1,014,000	2,285,568
20	Feb 24, 2026 22:01	5,134	71,389,532	41,602,000	1,014,000	2,285,568
21	Feb 24, 2026 22:01	5,137	70,084,392	42,635,000	0	2,281,472
22	Feb 24, 2026 22:01	5,145	72,436,252	41,708,000	993,000	2,289,664
23	Feb 24, 2026 22:02	5,157	68,582,680	40,809,000	1,990,000	2,281,472
24	Feb 24, 2026 22:01	5,160	69,604,000	40,836,000	1,992,000	2,502,656
25	Feb 24, 2026 22:01	5,171	72,438,056	40,925,000	1,996,000	2,510,848
26	Feb 24, 2026 22:01	5,172	63,729,683	40,932,000	1,996,000	2,502,656
27	Feb 24, 2026 22:01	5,817	82,213,593	46,268,000	2,011,000	2,510,848

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