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.

Date	Author	Language	Status	Score
Feb 7, 2026 17:45	Benn Tan	CPPg++13.3.0	Error
Feb 7, 2026 17:41	Benn Tan	CPPg++13.3.0	Success	20,972
Feb 7, 2026 17:37	Benn Tan	CPPg++13.3.0	Error
Feb 7, 2026 17:34	Benn Tan	CPPg++13.3.0	Success	18,743+63.12 RP
Feb 7, 2026 17:30	Benn Tan	CPPg++13.3.0	Success	21,258+18.09 RP
Feb 7, 2026 17:28	Benn Tan	CPPg++13.3.0	Success	25,849
Feb 7, 2026 17:27	Benn Tan	CPPg++13.3.0	Error
Feb 7, 2026 17:25	Benn Tan	CPPg++13.3.0	Error
Feb 7, 2026 17:22	Benn Tan	CPPg++13.3.0	Success	22,108+273.83 RP
Feb 7, 2026 17:16	Benn Tan	CPPg++13.3.0	Success	71,209
Feb 7, 2026 17:13	Benn Tan	CPPg++13.3.0	Success	63,103
Feb 7, 2026 17:12	Benn Tan	CPPg++13.3.0	Success	56,025+8.80 RP
Feb 7, 2026 17:06	Benn Tan	CPPg++13.3.0	Success	58,932+22.42 RP
Feb 7, 2026 17:01	Benn Tan	CPPg++13.3.0	Success	67,902+121.95 RP
Feb 7, 2026 16:59	Benn Tan	CPPg++13.3.0	Success	394,870+25.32 RP
Feb 7, 2026 16:31	tch1001	CPPg++13.3.0	Error
Feb 7, 2026 15:13	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 15:11	Daniel Mastalerz	CPPg++13.3.0	Success	13,568
Feb 7, 2026 15:09	Daniel Mastalerz	CPPg++13.3.0	Success	13,541+7.72 RP
Feb 7, 2026 15:08	Daniel Mastalerz	CPPg++13.3.0	Success	20,416
Feb 7, 2026 15:04	Daniel Mastalerz	CPPg++13.3.0	Success	13,684+9.85 RP
Feb 7, 2026 15:03	Daniel Mastalerz	CPPg++13.3.0	Success	13,871+19.72 RP
Feb 7, 2026 15:02	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 15:01	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 15:00	Daniel Mastalerz	CPPg++13.3.0	Success	14,261+74.76 RP
Feb 7, 2026 14:56	Daniel Mastalerz	CPPg++13.3.0	Success	15,963+379.58 RP
Feb 7, 2026 14:53	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 14:52	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 13:15	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 13:06	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 13:02	Daniel Mastalerz	CPPg++13.3.0	Success	53,086
Feb 7, 2026 13:00	Daniel Mastalerz	CPPg++13.3.0	Success	40,507+28.91 RP
Feb 7, 2026 12:33	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 7, 2026 11:36	Daniel Mastalerz	CPPg++13.3.0	Success	46,104
Feb 7, 2026 06:58	Aleksandr Medvedev	CPPg++13.3.0	Error
Feb 7, 2026 06:44	Aleksandr Medvedev	CPPg++13.3.0	Error
Feb 6, 2026 21:27	Aleksandr Medvedev	CPPg++13.3.0	Error
Feb 6, 2026 20:18	lipapipa	CPPg++13.3.0	Error
Feb 6, 2026 18:33	Mikołaj Uzarski	CPPg++13.3.0	Success	37,820+1.98 RP
Feb 6, 2026 18:31	Mikołaj Uzarski	CPPg++13.3.0	Success	50,368
Feb 6, 2026 18:18	Mikołaj Uzarski	CPPg++13.3.0	Success	39,761
Feb 6, 2026 18:17	Mikołaj Uzarski	CPPg++13.3.0	Success	49,963
Feb 6, 2026 17:54	Mikołaj Uzarski	CPPg++13.3.0	Success	39,064
Feb 6, 2026 17:53	Mikołaj Uzarski	CPPg++13.3.0	Success	38,106+0.27 RP
Feb 6, 2026 17:10	Mikołaj Uzarski	CPPg++13.3.0	Success	38,145+6.63 RP
Feb 6, 2026 17:07	Mikołaj Uzarski	CPPg++13.3.0	Success	39,134+76.12 RP
Feb 6, 2026 16:38	Mikołaj Uzarski	CPPg++13.3.0	Success	62,159
Feb 6, 2026 16:38	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 6, 2026 16:37	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 6, 2026 16:35	Mikołaj Uzarski	CPPg++13.3.0	Success	57,372
Feb 6, 2026 16:30	Mikołaj Uzarski	CPPg++13.3.0	Success	65,639
Feb 6, 2026 16:27	Mikołaj Uzarski	CPPg++13.3.0	Success	59,013
Feb 6, 2026 16:24	Mikołaj Uzarski	CPPg++13.3.0	Success	55,737+179.41 RP
Feb 6, 2026 10:03	Daniel Mastalerz	CPPg++13.3.0	Success	53,224
Feb 6, 2026 10:01	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 6, 2026 09:59	Daniel Mastalerz	CPPg++13.3.0	Success	58,750
Feb 6, 2026 09:49	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 6, 2026 09:47	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 5, 2026 23:16	ruban	RUSTrust-1.93.0	Success	24,813
Feb 5, 2026 23:10	ruban	RUSTrust-1.93.0	Success	38,443
Feb 5, 2026 23:01	ruban	RUSTrust-1.93.0	Success	22,941+74.69 RP
Feb 5, 2026 22:56	ruban	RUSTrust-1.93.0	Success	27,685+361.21 RP
Feb 5, 2026 20:46	Benzotopor	CPPclang++18.1.3	Success	49,356+5.74 RP
Feb 5, 2026 15:27	howen	RUSTrust-1.93.0	Success	90,929
Feb 5, 2026 14:34	howen	RUSTrust-1.93.0	Success	90,921+82.94 RP
Feb 5, 2026 14:30	howen	RUSTrust-1.93.0	Success	369,764+27.04 RP
Feb 5, 2026 05:03	Josu San Martin	CPPclang++18.1.3	Success	5,852
Feb 5, 2026 05:00	Josu San Martin	CPPclang++18.1.3	Success	5,883
Feb 5, 2026 04:58	Josu San Martin	CPPclang++18.1.3	Error
Feb 5, 2026 04:46	Josu San Martin	CPPg++13.3.0	Success	6,074
Feb 5, 2026 04:45	Josu San Martin	CPPclang++18.1.3	Success	5,980
Feb 5, 2026 04:07	Josu San Martin	CPPclang++18.1.3	Success	5,864
Feb 5, 2026 04:06	Josu San Martin	CPPclang++18.1.3	Success	5,965
Feb 5, 2026 04:05	Josu San Martin	CPPg++13.3.0	Success	6,252
Feb 4, 2026 15:46	lipapipa	CPPg++13.3.0	Error
Feb 4, 2026 13:16	Glenn	CPPg++13.3.0	Success	2,068,055+4.84 RP
Feb 4, 2026 06:28	Ruszrok	CPPclang++18.1.3	Success	12,035+208.59 RP
Feb 3, 2026 22:30	Ruszrok	CPPclang++18.1.3	Success	16,069+5.98 RP
Feb 3, 2026 22:29	Ruszrok	CPPclang++18.1.3	Success	16,225+3.96 RP
Feb 3, 2026 22:27	Ruszrok	CPPg++13.3.0	Success	18,250
Feb 3, 2026 22:22	Ruszrok	CPPclang++18.1.3	Success	16,330+37.56 RP
Feb 3, 2026 22:20	Ruszrok	CPPg++13.3.0	Success	18,280
Feb 3, 2026 22:19	Ruszrok	CPPg++13.3.0	Success	18,272
Feb 3, 2026 22:15	olliecrow	CPPg++13.3.0	Success	368,762
Feb 3, 2026 22:01	Ruszrok	CPPg++13.3.0	Success	17,979
Feb 3, 2026 21:28	Ruszrok	CPPg++13.3.0	Success	17,397+16.81 RP
Feb 3, 2026 14:29	Ruszrok	CPPg++13.3.0	Success	17,921+214.63 RP
Feb 3, 2026 13:43	Ruszrok	CPPg++13.3.0	Success	31,412
Feb 3, 2026 13:38	Ruszrok	CPPg++13.3.0	Success	29,799
Feb 3, 2026 13:34	Ruszrok	CPPg++13.3.0	Success	38,050
Feb 3, 2026 13:19	Ruszrok	CPPg++13.3.0	Success	29,123+21.11 RP
Feb 3, 2026 13:11	Ruszrok	CPPg++13.3.0	Success	41,762
Feb 3, 2026 13:03	Ruszrok	CPPg++13.3.0	Success	35,488
Feb 3, 2026 12:57	Ruszrok	CPPg++13.3.0	Success	31,031+44.63 RP
Feb 3, 2026 12:52	Ruszrok	CPPg++13.3.0	Success	36,019+5.20 RP
Feb 3, 2026 12:46	Ruszrok	CPPg++13.3.0	Success	37,826
Feb 3, 2026 12:40	Ruszrok	CPPg++13.3.0	Success	36,706+10.92 RP
Feb 3, 2026 12:24	Ruszrok	CPPg++13.3.0	Success	38,239+49.22 RP
Feb 3, 2026 11:59	Ruszrok	CPPg++13.3.0	Success	47,104+113.86 RP
Feb 3, 2026 11:54	Ruszrok	CPPg++13.3.0	Success	101,592+53.18 RP

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