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 6, 2026 16:50

Josu San MartinError

Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Apr 21, 2026 18:32	Yuriy Lyfenko	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Apr 21, 2026 18:33	0	30,030,350,211	29,998,269,000	999,000	221,184	Killed by timeout
2	Mar 6, 2026 16:51	4,934	66,561,743	39,952,000	998,000	2,330,624
3	Mar 6, 2026 16:51	4,948	71,548,476	39,063,000	2,003,000	2,330,624
4	Mar 6, 2026 16:51	4,953	63,746,644	39,105,000	2,005,000	2,342,912
5	Mar 6, 2026 16:51	4,953	62,949,945	39,109,000	2,005,000	2,289,664
6	Mar 6, 2026 16:51	4,957	69,867,006	39,140,000	2,007,000	2,289,664
7	Mar 6, 2026 16:51	4,989	69,797,750	39,439,000	1,971,000	2,289,664
8	Mar 6, 2026 16:51	5,010	68,302,833	41,585,000	0	2,326,528
9	Mar 6, 2026 16:50	5,017	68,073,749	40,626,000	1,015,000	2,338,816
10	Mar 6, 2026 16:51	5,017	72,846,441	41,645,000	0	2,334,720
11	Mar 6, 2026 16:51	5,039	67,465,917	40,825,000	995,000	2,330,624
12	Mar 6, 2026 16:50	5,065	68,415,445	41,039,000	1,000,000	2,334,720
13	Mar 6, 2026 16:50	5,080	65,651,722	40,158,000	2,007,000	2,289,664
14	Mar 6, 2026 16:50	5,132	71,313,427	42,592,000	0	2,334,720
15	Mar 6, 2026 16:51	5,133	68,916,681	42,606,000	0	2,441,216
16	Mar 6, 2026 16:51	5,138	67,315,434	42,646,000	0	2,334,720
17	Mar 6, 2026 16:51	5,153	70,637,066	41,777,000	994,000	2,289,664
18	Mar 6, 2026 16:51	5,158	69,767,737	41,814,000	995,000	2,428,928
19	Mar 6, 2026 16:50	5,163	66,948,849	40,857,000	1,993,000	2,289,664
20	Mar 6, 2026 16:50	5,164	68,187,557	41,838,000	1,020,000	2,289,664
21	Mar 6, 2026 16:50	5,179	67,648,181	40,983,000	1,999,000	2,289,664
22	Mar 6, 2026 16:50	5,193	69,786,493	41,095,000	2,004,000	2,338,816
23	Mar 6, 2026 16:50	5,205	66,634,006	42,195,000	1,004,000	2,289,664
24	Mar 6, 2026 16:50	5,226	66,017,078	42,369,000	1,008,000	2,289,664
25	Mar 6, 2026 16:51	5,233	65,481,693	42,427,000	1,010,000	2,289,664
26	Mar 6, 2026 16:51	5,254	72,693,996	43,612,000	0	2,289,664
27	Mar 6, 2026 16:50	5,293	69,302,396	41,936,000	1,996,000	2,289,664
28	Mar 6, 2026 16:51	5,293	69,745,586	42,936,000	998,000	2,326,528
29	Mar 6, 2026 16:51	5,305	78,655,378	43,032,000	1,000,000	2,289,664
30	Mar 6, 2026 16:50	5,307	70,254,184	43,043,000	1,001,000	2,289,664
31	Mar 6, 2026 16:51	5,346	69,581,834	43,364,000	1,008,000	2,334,720

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