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 2, 2026 20:33	javivallejo	CPPg++13.3.0	Success	64,191+22.60 RP
Feb 2, 2026 20:12	javivallejo	CPPg++13.3.0	Success	75,086+133.18 RP
Feb 2, 2026 04:54	Josu San Martin	RUSTrust-1.92.0	Success	36,018
Feb 2, 2026 04:00	Josu San Martin	RUSTrust-1.92.0	Success	5,782
Feb 2, 2026 03:58	Josu San Martin	RUSTrust-1.92.0	Success	5,761
Feb 2, 2026 03:09	Josu San Martin	RUSTrust-1.92.0	Success	5,701
Feb 2, 2026 03:09	Josu San Martin	RUSTrust-1.92.0	Success	5,701
Feb 1, 2026 16:13	kkx	CPPg++13.3.0	Success	55,614+31.63 RP
Feb 1, 2026 15:14	kkx	CPPg++13.3.0	Success	67,483+1.89 RP
Feb 1, 2026 14:03	kkx	CPPg++13.3.0	Success	68,356+9.46 RP
Feb 1, 2026 13:51	kkx	CPPg++13.3.0	Success	73,080+13.70 RP
Feb 1, 2026 13:15	kkx	CPPg++13.3.0	Success	81,210+123.14 RP
Jan 31, 2026 21:40	olliecrow	CPPg++13.3.0	Success	6,436
Jan 31, 2026 21:39	olliecrow	CPPg++13.3.0	Success	6,360+0.74 RP
Jan 31, 2026 21:39	olliecrow	CPPg++13.3.0	Success	6,363
Jan 31, 2026 21:39	olliecrow	CPPg++13.3.0	Success	6,379
Jan 31, 2026 21:39	olliecrow	CPPg++13.3.0	Success	6,363+84.15 RP
Jan 31, 2026 18:47	Izaac Mammadov	RUSTrust-1.93.0	Success	368,956+27.10 RP
Jan 31, 2026 18:01	olliecrow	CPPg++13.3.0	Success	7,003
Jan 31, 2026 18:00	olliecrow	CPPg++13.3.0	Success	6,942
Jan 31, 2026 18:00	olliecrow	CPPg++13.3.0	Success	7,062
Jan 31, 2026 18:00	olliecrow	CPPg++13.3.0	Success	7,018
Jan 31, 2026 18:00	olliecrow	CPPg++13.3.0	Success	6,945
Jan 31, 2026 15:07	olliecrow	CPPg++13.3.0	Success	7,278
Jan 31, 2026 15:07	olliecrow	CPPg++13.3.0	Success	7,183
Jan 31, 2026 15:06	olliecrow	CPPg++13.3.0	Success	7,220
Jan 31, 2026 15:06	olliecrow	CPPg++13.3.0	Success	7,203
Jan 31, 2026 13:21	olliecrow	CPPg++13.3.0	Success	7,091
Jan 31, 2026 11:52	olliecrow	CPPg++13.3.0	Success	8,056
Jan 31, 2026 11:52	olliecrow	CPPg++13.3.0	Success	8,165
Jan 31, 2026 11:52	olliecrow	CPPg++13.3.0	Success	8,137
Jan 31, 2026 11:51	olliecrow	CPPg++13.3.0	Success	8,146
Jan 31, 2026 11:49	olliecrow	CPPg++13.3.0	Success	6,725
Jan 31, 2026 11:48	olliecrow	CPPg++13.3.0	Success	6,723+1.33 RP
Jan 31, 2026 11:17	olliecrow	CPPg++13.3.0	Success	6,729+441.06 RP
Jan 31, 2026 11:14	olliecrow	CPPg++13.3.0	Success	33,910
Jan 31, 2026 11:08	olliecrow	CPPg++13.3.0	Success	33,142
Jan 31, 2026 00:15	olliecrow	CPPg++13.3.0	Success	9,650
Jan 31, 2026 00:14	olliecrow	CPPg++13.3.0	Success	9,640
Jan 31, 2026 00:13	olliecrow	CPPg++13.3.0	Success	9,569+13.26 RP
Jan 31, 2026 00:12	olliecrow	CPPg++13.3.0	Success	9,692+4.56 RP
Jan 31, 2026 00:11	olliecrow	CPPg++13.3.0	Success	9,735+86.75 RP
Jan 30, 2026 23:56	olliecrow	CPPg++13.3.0	Success	12,533
Jan 30, 2026 21:08	olliecrow	RUSTrust-1.93.0	Error
Jan 30, 2026 21:04	olliecrow	CPPg++13.3.0	Success	10,633+31.29 RP
Jan 30, 2026 20:58	olliecrow	RUSTrust-1.93.0	Success	71,285
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

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