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
Mar 16, 2026 21:00	zielaj	CPPclang++18.1.3	Error
Mar 16, 2026 20:37	Yuriy Lyfenko	CPPg++13.3.0	Success	10,219
Mar 16, 2026 20:31	Yuriy Lyfenko	CPPg++13.3.0	Success	9,287
Mar 16, 2026 20:29	Yuriy Lyfenko	CPPclang++18.1.3	Success	9,984
Mar 16, 2026 20:28	Yuriy Lyfenko	CPPg++13.3.0	Success	9,547
Mar 16, 2026 20:15	Yuriy Lyfenko	CPPg++13.3.0	Success	9,866
Mar 16, 2026 20:14	Yuriy Lyfenko	CPPg++13.3.0	Success	9,887
Mar 16, 2026 20:03	Yuriy Lyfenko	CPPg++13.3.0	Success	10,427
Mar 16, 2026 19:36	Eric Ceglie	CPPclang++18.1.3	Success	10,822
Mar 16, 2026 19:36	Yuriy Lyfenko	CPPg++13.3.0	Success	9,863
Mar 16, 2026 19:35	Yuriy Lyfenko	CPPclang++18.1.3	Success	11,796
Mar 16, 2026 19:32	Yuriy Lyfenko	CPPg++13.3.0	Success	9,873
Mar 16, 2026 17:31	caando	CPPclang++18.1.3	Error
Mar 16, 2026 17:25	caando	CPPclang++18.1.3	Error
Mar 16, 2026 17:24	caando	CPPclang++18.1.3	Error
Mar 16, 2026 17:21	caando	CPPclang++18.1.3	Error
Mar 16, 2026 17:20	caando	CPPclang++18.1.3	Success	14,522
Mar 16, 2026 17:14	caando	CPPg++13.3.0	Success	17,631
Mar 16, 2026 17:08	caando	CPPg++13.3.0	Error
Mar 16, 2026 17:05	caando	CPPg++13.3.0	Error
Mar 16, 2026 17:00	caando	CPPg++13.3.0	Error
Mar 16, 2026 16:57	caando	CPPg++13.3.0	Error
Mar 16, 2026 16:56	caando	CPPg++13.3.0	Success	16,212
Mar 16, 2026 16:56	caando	CPPclang++18.1.3	Success	15,416
Mar 16, 2026 16:52	caando	CPPclang++18.1.3	Error
Mar 16, 2026 16:52	shartgepetto	CPPclang++18.1.3	Success	7,891
Mar 16, 2026 16:52	shartgepetto	CPPclang++18.1.3	Success	7,767+6.76 RP
Mar 16, 2026 16:52	shartgepetto	CPPclang++18.1.3	Success	7,808+2.95 RP
Mar 16, 2026 16:50	caando	CPPg++13.3.0	Error
Mar 16, 2026 16:37	shartgepetto	CPPclang++18.1.3	Success	11,697
Mar 16, 2026 16:36	shartgepetto	CPPclang++18.1.3	Success	11,543
Mar 16, 2026 16:36	shartgepetto	CPPclang++18.1.3	Success	11,551
Mar 16, 2026 16:36	shartgepetto	CPPclang++18.1.3	Success	7,855
Mar 16, 2026 16:36	shartgepetto	CPPclang++18.1.3	Success	8,142
Mar 16, 2026 16:36	shartgepetto	CPPclang++18.1.3	Success	7,881
Mar 16, 2026 16:22	Joel Chong	CPPg++13.3.0	Success	64,415
Mar 16, 2026 16:15	Joel Chong	CPPg++13.3.0	Success	60,457
Mar 16, 2026 16:15	Joel Chong	CPPg++13.3.0	Success	60,451
Mar 16, 2026 16:14	Joel Chong	CPPg++13.3.0	Success	60,455
Mar 16, 2026 16:14	Joel Chong	CPPg++13.3.0	Success	60,448+7.74 RP
Mar 16, 2026 16:05	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 16:03	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 16:01	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 15:59	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 15:52	Joel Chong	CPPg++13.3.0	Success	63,416+5.76 RP
Mar 16, 2026 15:24	Joel Chong	CPPg++13.3.0	Success	65,822+151.92 RP
Mar 16, 2026 15:23	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 15:21	Joel Chong	CPPg++13.3.0	Error
Mar 16, 2026 13:59	shartgepetto	CPPclang++18.1.3	Error
Mar 16, 2026 13:59	shartgepetto	CPPclang++18.1.3	Error
Mar 16, 2026 13:59	shartgepetto	CPPclang++18.1.3	Error
Mar 16, 2026 13:49	Eric Ceglie	CPPclang++18.1.3	Success	8,924
Mar 16, 2026 13:26	Eric Ceglie	CPPclang++18.1.3	Success	8,866+4.81 RP
Mar 16, 2026 13:12	Eric Ceglie	CPPclang++18.1.3	Success	40,354
Mar 16, 2026 13:10	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 13:09	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 13:02	shartgepetto	CPPclang++18.1.3	Success	8,561
Mar 16, 2026 13:02	shartgepetto	CPPclang++18.1.3	Success	8,145
Mar 16, 2026 13:01	shartgepetto	CPPclang++18.1.3	Success	8,050
Mar 16, 2026 12:44	Eric Ceglie	CPPclang++18.1.3	Success	48,275
Mar 16, 2026 12:30	Keefe	CPPclang++18.1.3	Success	9,463
Mar 16, 2026 12:30	Keefe	CPPg++13.3.0	Success	9,852
Mar 16, 2026 12:04	Eric Ceglie	CPPclang++18.1.3	Success	9,089
Mar 16, 2026 12:04	Eric Ceglie	CPPclang++18.1.3	Success	9,341
Mar 16, 2026 12:04	Eric Ceglie	CPPclang++18.1.3	Success	9,051
Mar 16, 2026 11:55	Eric Ceglie	CPPclang++18.1.3	Success	10,778
Mar 16, 2026 11:52	Eric Ceglie	CPPclang++18.1.3	Success	17,955
Mar 16, 2026 11:50	Eric Ceglie	CPPclang++18.1.3	Success	8,965
Mar 16, 2026 11:48	Eric Ceglie	CPPclang++18.1.3	Success	13,498
Mar 16, 2026 11:47	Eric Ceglie	CPPclang++18.1.3	Success	8,904+0.38 RP
Mar 16, 2026 11:47	Eric Ceglie	CPPg++13.3.0	Success	10,502
Mar 16, 2026 11:47	Eric Ceglie	CPPg++13.3.0	Success	10,627
Mar 16, 2026 11:33	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 11:31	Eric Ceglie	CPPclang++18.1.3	Success	14,626
Mar 16, 2026 11:28	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 11:27	Keefe	CPPg++13.3.0	Success	7,608
Mar 16, 2026 11:25	Eric Ceglie	CPPclang++18.1.3	Success	9,378
Mar 16, 2026 11:25	Keefe	CPPclang++18.1.3	Error	+126.42 RP
Mar 16, 2026 11:24	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 11:22	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 11:17	Eric Ceglie	CPPclang++18.1.3	Success	9,666
Mar 16, 2026 11:16	Eric Ceglie	CPPclang++18.1.3	Success	34,109
Mar 16, 2026 11:15	Eric Ceglie	CPPclang++18.1.3	Success	9,735
Mar 16, 2026 11:14	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 11:13	Eric Ceglie	CPPclang++18.1.3	Success	33,971
Mar 16, 2026 11:11	Eric Ceglie	CPPclang++18.1.3	Success	8,925
Mar 16, 2026 11:07	Eric Ceglie	CPPclang++18.1.3	Success	9,629
Mar 16, 2026 11:06	Eric Ceglie	CPPclang++18.1.3	Success	8,922
Mar 16, 2026 11:02	Eric Ceglie	CPPclang++18.1.3	Success	8,911
Mar 16, 2026 10:35	Dominique Garmier	CPPclang++18.1.3	Success	8,831
Mar 16, 2026 10:35	Dominique Garmier	CPPclang++18.1.3	Success	74,466
Mar 16, 2026 10:35	Eric Ceglie	CPPclang++18.1.3	Success	13,920
Mar 16, 2026 10:30	Dominique Garmier	CPPclang++18.1.3	Error
Mar 16, 2026 10:28	Dominique Garmier	CPPclang++18.1.3	Success	10,576
Mar 16, 2026 10:21	Dominique Garmier	CPPclang++18.1.3	Success	12,286
Mar 16, 2026 10:20	Eric Ceglie	CPPg++13.3.0	Success	11,518
Mar 16, 2026 10:20	Eric Ceglie	CPPclang++18.1.3	Success	14,154
Mar 16, 2026 10:16	Dominique Garmier	CPPclang++18.1.3	Success	10,182
Mar 16, 2026 10:12	Eric Ceglie	CPPclang++18.1.3	Error
Mar 16, 2026 10:09	Dominique Garmier	CPPclang++18.1.3	Success	9,830

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