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.

Date	Author	Language	Status	Score
Feb 15, 2026 11:58	Daniel Mastalerz	CPPclang++18.1.3	Success	7,345
Feb 15, 2026 11:46	Daniel Mastalerz	CPPclang++18.1.3	Success	8,442
Feb 15, 2026 11:43	Daniel Mastalerz	CPPg++13.3.0	Success	8,553
Feb 15, 2026 11:42	Daniel Mastalerz	CPPclang++18.1.3	Success	7,961
Feb 15, 2026 11:42	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:36	Daniel Mastalerz	CPPclang++18.1.3	Success	8,062
Feb 15, 2026 11:35	Daniel Mastalerz	CPPclang++18.1.3	Success	10,866
Feb 15, 2026 11:35	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:34	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:33	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:31	wn	CPPg++13.3.0	Error
Feb 15, 2026 11:19	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:08	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:06	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:03	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 11:02	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:59	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:57	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:56	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:55	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:54	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:53	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:52	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:52	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:51	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:50	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:44	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:39	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:36	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:36	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:33	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:33	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:32	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:31	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:29	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:28	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:27	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:26	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:24	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:20	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:08	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 10:02	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 09:37	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 09:37	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 15, 2026 08:48	Daniel Mastalerz	CPPclang++18.1.3	Success	112,611
Feb 15, 2026 08:16	wn	CPPg++13.3.0	Error
Feb 14, 2026 18:22	wn	CPPg++13.3.0	Error
Feb 14, 2026 17:29	CheckHarry	CPPg++13.3.0	Success	60,913
Feb 14, 2026 17:11	CheckHarry	CPPg++13.3.0	Success	62,675
Feb 14, 2026 16:38	wn	CPPg++13.3.0	Error
Feb 14, 2026 16:37	wn	CPPg++13.3.0	Error
Feb 14, 2026 16:02	wn	CPPg++13.3.0	Error
Feb 14, 2026 15:47	Juraj Zelman	RUSTrust-1.93.1	Success	11,156
Feb 14, 2026 15:39	Juraj Zelman	RUSTrust-1.93.1	Success	10,778+293.74 RP
Feb 14, 2026 15:34	Juraj Zelman	RUSTrust-1.93.1	Success	15,771+243.45 RP
Feb 14, 2026 14:42	Juraj Zelman	RUSTrust-1.93.1	Success	25,600+35.06 RP
Feb 14, 2026 14:40	Juraj Zelman	RUSTrust-1.93.1	Success	28,124+35.17 RP
Feb 14, 2026 13:26	Juraj Zelman	RUSTrust-1.93.1	Success	31,211+46.21 RP
Feb 14, 2026 13:17	Juraj Zelman	RUSTrust-1.93.1	Success	36,471+111.64 RP
Feb 14, 2026 12:55	Juraj Zelman	RUSTrust-1.93.1	Success	61,643
Feb 14, 2026 12:51	Juraj Zelman	RUSTrust-1.93.1	Success	61,518+162.55 RP
Feb 14, 2026 09:34	Daniel Mastalerz	CPPclang++18.1.3	Success	180,502
Feb 14, 2026 09:29	Daniel Mastalerz	CPPclang++18.1.3	Success	6,575
Feb 14, 2026 09:22	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 14, 2026 09:17	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 14, 2026 09:16	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 14, 2026 09:02	Daniel Mastalerz	CPPclang++18.1.3	Success	6,485+17.40 RP
Feb 14, 2026 09:00	Daniel Mastalerz	CPPclang++18.1.3	Success	10,387
Feb 14, 2026 08:10	Daniel Mastalerz	CPPclang++18.1.3	Success	6,574
Feb 14, 2026 08:09	Daniel Mastalerz	CPPclang++18.1.3	Success	6,873
Feb 14, 2026 08:05	Daniel Mastalerz	CPPclang++18.1.3	Success	6,559+22.22 RP
Feb 14, 2026 08:00	Daniel Mastalerz	CPPclang++18.1.3	Success	7,470
Feb 14, 2026 07:57	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 14, 2026 07:43	Daniel Mastalerz	CPPclang++18.1.3	Success	6,914
Feb 14, 2026 00:07	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,322+122.99 RP
Feb 14, 2026 00:07	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,211
Feb 13, 2026 23:49	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,855+22.63 RP
Feb 13, 2026 23:45	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,004
Feb 13, 2026 23:45	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,963+6.98 RP
Feb 13, 2026 23:40	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,000
Feb 13, 2026 23:34	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,997+3.87 RP
Feb 13, 2026 23:33	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,117
Feb 13, 2026 23:32	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,481
Feb 13, 2026 23:31	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,791
Feb 13, 2026 23:25	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,130
Feb 13, 2026 23:23	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,016+16.07 RP
Feb 13, 2026 23:20	Mikołaj Uzarski	CPPclang++18.1.3	Success	29,330
Feb 13, 2026 23:15	Mikołaj Uzarski	CPPclang++18.1.3	Error
Feb 13, 2026 21:19	Daniel Mastalerz	CPPclang++18.1.3	Success	6,749
Feb 13, 2026 21:18	Daniel Mastalerz	CPPg++13.3.0	Success	8,505
Feb 13, 2026 21:16	Daniel Mastalerz	CPPclang++18.1.3	Success	6,656+7.19 RP
Feb 13, 2026 21:15	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 13, 2026 21:13	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 13, 2026 21:12	Daniel Mastalerz	CPPclang++18.1.3	Success	6,688+29.37 RP
Feb 13, 2026 21:11	Daniel Mastalerz	CPPclang++18.1.3	Success	6,822+41.34 RP
Feb 13, 2026 21:10	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 13, 2026 21:09	Daniel Mastalerz	CPPclang++18.1.3	Success	7,020+76.43 RP
Feb 13, 2026 21:07	Daniel Mastalerz	CPPclang++18.1.3	Success	7,418+4.71 RP
Feb 13, 2026 21:06	Daniel Mastalerz	CPPclang++18.1.3	Success	7,444+89.45 RP
Feb 13, 2026 21:05	Daniel Mastalerz	CPPclang++18.1.3	Success	9,602

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