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 13, 2026 16:02

wnScore: 4,431Success

Source Code

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

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 13, 2026 15:22	4,377	61,587,531	34,310,000	2,018,000	2,273,280
2	Mar 13, 2026 15:22	4,379	60,445,881	35,337,000	1,009,000	2,494,464
3	Mar 13, 2026 15:40	4,381	58,597,314	35,351,000	1,010,000	2,273,280
4	Mar 13, 2026 17:26	4,392	61,257,455	35,442,000	1,012,000	2,273,280
5	Mar 13, 2026 15:37	4,396	60,346,619	35,474,000	1,013,000	2,490,368
6	Mar 13, 2026 15:22	4,398	58,195,446	35,492,000	1,014,000	2,502,656
7	Mar 13, 2026 15:42	4,399	55,130,382	35,501,000	1,014,000	2,273,280
8	Mar 13, 2026 15:37	4,403	59,081,014	35,526,000	1,015,000	2,490,368
9	Mar 13, 2026 15:22	4,405	59,427,722	35,548,000	1,015,000	2,273,280
10	Mar 13, 2026 15:37	4,406	56,752,323	35,556,000	1,015,000	2,486,272
11	Mar 13, 2026 15:37	4,407	60,219,521	35,560,000	1,016,000	2,486,272
12	Mar 13, 2026 15:40	4,408	66,694,953	35,568,000	1,016,000	2,273,280
13	Mar 13, 2026 17:26	4,413	65,463,928	35,611,000	1,017,000	2,486,272
14	Mar 13, 2026 15:22	4,415	63,285,936	35,626,000	1,017,000	2,498,560
15	Mar 13, 2026 15:40	4,417	62,664,000	35,643,000	1,018,000	2,486,272
16	Mar 13, 2026 15:42	4,431	65,198,865	34,793,000	1,988,000	2,273,280
17	Mar 13, 2026 15:42	4,437	61,544,397	34,839,000	1,990,000	2,273,280
18	Mar 13, 2026 15:22	4,438	65,657,907	35,838,000	995,000	2,490,368
19	Mar 13, 2026 15:22	4,438	61,597,253	35,838,000	995,000	2,498,560
20	Mar 13, 2026 15:37	4,439	59,911,568	35,849,000	995,000	2,494,464
21	Mar 13, 2026 15:37	4,440	62,922,434	34,861,000	1,992,000	2,490,368
22	Mar 13, 2026 15:37	4,446	63,085,059	34,909,000	1,994,000	2,531,328
23	Mar 13, 2026 17:26	4,449	59,940,702	34,930,000	1,996,000	2,273,280
24	Mar 13, 2026 15:37	4,459	57,769,429	35,009,000	2,000,000	2,273,280
25	Mar 13, 2026 15:22	4,464	62,412,707	35,051,000	2,002,000	2,273,280
26	Mar 13, 2026 16:02	4,480	63,654,946	35,174,000	2,009,000	2,273,280
27	Mar 13, 2026 15:22	4,483	61,442,845	35,198,000	2,011,000	2,273,280
28	Mar 13, 2026 16:02	4,490	58,396,446	36,263,000	1,007,000	2,273,280
29	Mar 13, 2026 16:02	4,502	63,510,487	36,360,000	1,010,000	2,494,464
30	Mar 13, 2026 15:37	8,033	94,148,148	65,668,000	1,010,000	2,494,464

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