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
Jan 30, 2026 20:57	olliecrow	CPPg++13.3.0	Error
Jan 30, 2026 20:01	olliecrow	CPPg++13.3.0	Success	11,776
Jan 30, 2026 20:01	olliecrow	CPPg++13.3.0	Success	11,708
Jan 30, 2026 20:01	olliecrow	CPPg++13.3.0	Success	11,741
Jan 30, 2026 20:00	olliecrow	CPPg++13.3.0	Success	11,714
Jan 30, 2026 20:00	olliecrow	RUSTrust-1.93.0	Success	68,604
Jan 30, 2026 19:59	olliecrow	RUSTrust-1.93.0	Success	69,460
Jan 30, 2026 19:56	olliecrow	RUSTrust-1.93.0	Success	49,032
Jan 30, 2026 19:53	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 19:52	olliecrow	RUSTrust-1.93.0	Success	12,082
Jan 30, 2026 19:48	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 19:48	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 19:48	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 19:47	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 19:44	olliecrow	CPPg++13.3.0	Success	11,583
Jan 30, 2026 19:43	olliecrow	CPPg++13.3.0	Success	10,999+198.49 RP
Jan 30, 2026 19:42	olliecrow	CPPg++13.3.0	Success	50,986
Jan 30, 2026 19:42	olliecrow	CPPg++13.3.0	Error
Jan 30, 2026 19:41	olliecrow	CPPg++13.3.0	Error
Jan 30, 2026 19:40	olliecrow	CPPg++13.3.0	Success	14,071+315.81 RP
Jan 30, 2026 19:39	olliecrow	CPPg++13.3.0	Success	25,325+394.87 RP
Jan 30, 2026 10:21	Andrey Tsvetkov	GOgo1.25.6	Success	40,586
Jan 30, 2026 08:35	Andrey Tsvetkov	GOgo1.25.6	Success	39,593
Jan 30, 2026 08:34	Andrey Tsvetkov	GOgo1.25.6	Success	41,880
Jan 30, 2026 08:27	Andrey Tsvetkov	GOgo1.25.6	Success	41,837
Jan 30, 2026 07:27	Andrey Tsvetkov	GOgo1.25.6	Success	46,418
Jan 30, 2026 04:44	Josu San Martin	CPPg++13.3.0	Success	6,760
Jan 30, 2026 04:33	Josu San Martin	CPPg++13.3.0	Success	6,247
Jan 30, 2026 04:28	Josu San Martin	ZIG0.14.0	Success	6,490+1'147.52 RP
Jan 30, 2026 03:58	Josu San Martin	RUSTrust-1.92.0	Success	6,120
Jan 30, 2026 03:53	Josu San Martin	ZIG0.14.0	Success	48,682
Jan 30, 2026 03:33	Josu San Martin	RUSTrust-1.92.0	Success	5,980
Jan 30, 2026 03:31	Josu San Martin	CPPg++13.3.0	Error
Jan 30, 2026 03:30	Josu San Martin	CPPg++13.3.0	Success	6,483
Jan 30, 2026 03:29	Josu San Martin	CPPg++13.3.0	Success	6,258
Jan 30, 2026 03:29	Josu San Martin	CPPg++13.3.0	Success	6,285
Jan 30, 2026 03:28	Josu San Martin	CPPg++13.3.0	Success	6,195
Jan 30, 2026 03:27	Josu San Martin	CPPg++13.3.0	Success	6,219
Jan 30, 2026 03:20	Josu San Martin	CPPg++13.3.0	Success	6,200
Jan 30, 2026 03:16	Josu San Martin	CSHARP9.0.12	Success	8,050
Jan 30, 2026 03:16	Josu San Martin	CSHARP9.0.12	Success	8,928
Jan 30, 2026 03:15	Josu San Martin	CSHARP9.0.12	Error
Jan 30, 2026 03:14	Josu San Martin	CPPg++13.3.0	Success	6,041
Jan 30, 2026 02:40	Josu San Martin	CPPg++13.3.0	Success	6,047
Jan 30, 2026 02:40	Josu San Martin	CPPg++13.3.0	Success	6,137
Jan 30, 2026 02:40	Josu San Martin	CPPg++13.3.0	Success	6,080
Jan 29, 2026 20:44	sandheep rajkumar	RUSTrust-1.93.0	Success	71,455+15.63 RP
Jan 29, 2026 20:36	sandheep rajkumar	RUSTrust-1.93.0	Success	80,440+17.55 RP
Jan 29, 2026 20:32	sandheep rajkumar	RUSTrust-1.93.0	Error
Jan 29, 2026 20:27	sandheep rajkumar	RUSTrust-1.93.0	Success	93,659+87.74 RP
Jan 29, 2026 20:17	truepog	CPPg++13.3.0	Error
Jan 29, 2026 20:16	truepog	CPPg++13.3.0	Success	72,718
Jan 29, 2026 20:13	sandheep rajkumar	CPPg++13.3.0	Error
Jan 29, 2026 20:08	truepog	CPPg++13.3.0	Success	71,756+120.17 RP
Jan 29, 2026 20:07	sandheep rajkumar	CPPg++13.3.0	Error
Jan 29, 2026 20:06	truepog	CPPg++13.3.0	Error
Jan 29, 2026 20:05	sandheep rajkumar	CPPg++13.3.0	Error
Jan 29, 2026 20:02	truepog	CPPg++13.3.0	Success	521,107+19.19 RP
Jan 29, 2026 20:01	sandheep rajkumar	CPPg++13.3.0	Success	525,382+19.03 RP
Jan 29, 2026 19:55	truepog	CPPg++13.3.0	Error
Jan 29, 2026 18:23	Andrey Tsvetkov	GOgo1.25.6	Success	76,194
Jan 29, 2026 14:56	Andrey Tsvetkov	GOgo1.25.6	Error
Jan 29, 2026 14:47	Andrey Tsvetkov	GOgo1.25.6	Success	42,012
Jan 29, 2026 13:58	Andrey Tsvetkov	GOgo1.25.6	Success	38,600
Jan 29, 2026 13:45	Andrey Tsvetkov	GOgo1.25.6	Success	32,258
Jan 28, 2026 22:39	lipapipa	CPPg++13.3.0	Success	16,466
Jan 28, 2026 22:39	lipapipa	CPPg++13.3.0	Success	13,823
Jan 28, 2026 16:06	lipapipa	CPPg++13.3.0	Success	13,736+479.23 RP
Jan 27, 2026 23:20	lipapipa	CPPg++13.3.0	Success	46,971
Jan 27, 2026 23:20	lipapipa	CPPg++13.3.0	Success	47,496
Jan 27, 2026 22:06	lipapipa	CPPg++13.3.0	Success	51,452
Jan 27, 2026 22:01	lipapipa	CPPg++13.3.0	Success	40,195+1.87 RP
Jan 27, 2026 21:59	lipapipa	CPPg++13.3.0	Error
Jan 27, 2026 19:38	Garrett Walker	GOgo1.25.6	Success	269,664+37.08 RP
Jan 26, 2026 11:44	Ayush Sharma	CPPg++13.3.0	Success	2,047,000+4.89 RP
Jan 26, 2026 11:42	Ayush Sharma	CPPg++13.3.0	Error
Jan 26, 2026 01:59	Ryan Zhu	CPPg++13.3.0	Success	2,067,483+4.84 RP
Jan 24, 2026 16:13	Alexander Frolov	ZIG0.14.0	Success	132,287
Jan 24, 2026 16:06	Alexander Frolov	ZIG0.14.0	Success	165,228
Jan 24, 2026 16:03	Alexander Frolov	ZIG0.14.0	Success	168,565
Jan 22, 2026 21:20	lipapipa	CPPg++13.3.0	Error
Jan 22, 2026 21:01	lipapipa	CPPg++13.3.0	Success	49,864
Jan 22, 2026 20:08	lipapipa	CPPg++13.3.0	Success	42,280
Jan 22, 2026 20:01	lipapipa	CPPg++13.3.0	Success	46,656
Jan 22, 2026 19:18	lipapipa	CPPg++13.3.0	Success	40,500+2.82 RP
Jan 22, 2026 09:48	lipapipa	CPPg++13.3.0	Success	40,970
Jan 22, 2026 09:47	lipapipa	CPPg++13.3.0	Success	40,968+0.01 RP
Jan 22, 2026 09:44	lipapipa	CPPg++13.3.0	Success	41,131
Jan 22, 2026 09:36	lipapipa	CPPg++13.3.0	Success	40,970+61.45 RP
Jan 21, 2026 09:22	Petsku01	CPPg++13.3.0	Success	51,018
Jan 21, 2026 09:13	Petsku01	CPPg++13.3.0	Success	45,960
Jan 21, 2026 09:03	Petsku01	CPPg++13.3.0	Success	57,314
Jan 20, 2026 20:24	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 20, 2026 20:23	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 20, 2026 20:16	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 20, 2026 20:15	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 18, 2026 21:17	CU9HUE	CPPg++13.3.0	Error
Jan 17, 2026 15:03	Josu San Martin	CPPg++13.3.0	Error
Jan 15, 2026 20:09	Praveen Singh	CPPg++13.3.0	Success	69,716+143.44 RP
Jan 15, 2026 20:08	Praveen Singh	CPPg++13.3.0	Error

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