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
Jul 6, 2026 14:18	Teow Hua Jun	CPPg++14.2.0	Success	11,703
Jul 6, 2026 13:56	Teow Hua Jun	CPPg++14.2.0	Success	11,613
Jul 6, 2026 13:54	Teow Hua Jun	CPPg++14.2.0	Success	12,030
Jul 6, 2026 13:48	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 6, 2026 12:58	Teow Hua Jun	CPPg++14.2.0	Success	11,237
Jul 6, 2026 12:51	Teow Hua Jun	CPPg++14.2.0	Success	11,687
Jul 6, 2026 10:29	Kevin Heavey	RUSTrust-1.95.0	Success	9,174
Jul 6, 2026 10:09	Kevin Heavey	RUSTrust-1.95.0	Success	5,122
Jul 6, 2026 10:06	Teow Hua Jun	CPPg++14.2.0	Success	9,668+38.72 RP
Jul 6, 2026 10:04	Teow Hua Jun	CPPg++10.5.0	Success	10,573
Jul 6, 2026 09:04	Teow Hua Jun	CPPg++14.2.0	Error
Jul 6, 2026 08:34	Teow Hua Jun	CPPg++14.2.0	Success	10,993
Jul 6, 2026 08:31	Teow Hua Jun	CPPg++14.2.0	Success	10,066
Jul 6, 2026 08:18	Teow Hua Jun	CPPg++14.2.0	Success	12,590
Jul 6, 2026 08:16	Teow Hua Jun	CPPg++14.2.0	Success	12,570
Jul 6, 2026 08:11	Kevin Heavey	RUSTrust-1.95.0	Success	10,733
Jul 6, 2026 08:03	Kevin Heavey	RUSTrust-1.95.0	Success	4,588
Jul 6, 2026 07:59	Teow Hua Jun	CPPg++14.2.0	Success	12,693
Jul 6, 2026 07:47	Kevin Heavey	RUSTrust-1.95.0	Success	4,618
Jul 6, 2026 07:46	Kevin Heavey	RUSTrust-1.95.0	Success	4,754
Jul 6, 2026 07:42	Kevin Heavey	RUSTrust-1.95.0	Success	4,729
Jul 6, 2026 07:38	Teow Hua Jun	CPPg++14.2.0	Success	30,270
Jul 6, 2026 07:38	Kevin Heavey	RUSTrust-1.95.0	Success	4,707
Jul 6, 2026 07:28	Teow Hua Jun	CPPg++14.2.0	Success	10,044+95.37 RP
Jul 6, 2026 07:26	Victor Mercklé	CPPg++14.2.0	Success	7,807
Jul 6, 2026 07:20	Victor Mercklé	CPPg++14.2.0	Success	4,153
Jul 6, 2026 07:13	Victor Mercklé	CPPg++14.2.0	Success	4,225
Jul 6, 2026 07:12	Kevin Heavey	RUSTrust-1.95.0	Success	10,188
Jul 6, 2026 07:12	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 6, 2026 07:11	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 6, 2026 06:50	Victor Mercklé	CPPg++14.2.0	Error
Jul 6, 2026 06:31	Victor Mercklé	CPPg++14.2.0	Error
Jul 6, 2026 06:17	Victor Mercklé	CPPg++14.2.0	Success	8,624
Jul 6, 2026 06:07	Victor Mercklé	CPPg++14.2.0	Error	+3.58 RP
Jul 6, 2026 04:56	Teow Hua Jun	CPPg++14.2.0	Success	12,391
Jul 6, 2026 04:51	Teow Hua Jun	CPPg++14.2.0	Success	11,576
Jul 6, 2026 04:43	Teow Hua Jun	CPPg++14.2.0	Success	11,171
Jul 6, 2026 04:29	Teow Hua Jun	CPPg++14.2.0	Success	72,258
Jul 6, 2026 04:23	Teow Hua Jun	CPPg++10.5.0	Success	12,573
Jul 6, 2026 04:19	Teow Hua Jun	CPPg++14.2.0	Error
Jul 6, 2026 04:09	Teow Hua Jun	CPPg++10.5.0	Success	11,683
Jul 6, 2026 03:37	Teow Hua Jun	CPPg++14.2.0	Success	11,108+81.65 RP
Jul 5, 2026 21:30	Kevin Heavey	RUSTrust-1.95.0	Success	5,262
Jul 5, 2026 21:24	Kevin Heavey	RUSTrust-1.95.0	Success	7,037
Jul 5, 2026 21:17	Kevin Heavey	RUSTrust-1.95.0	Success	20,794
Jul 5, 2026 21:08	Victor Mercklé	CPPg++14.2.0	Success	5,512
Jul 5, 2026 21:04	Kevin Heavey	RUSTrust-1.95.0	Success	4,550+0.97 RP
Jul 5, 2026 21:04	Kevin Heavey	RUSTrust-1.95.0	Success	4,671
Jul 5, 2026 21:04	Kevin Heavey	RUSTrust-1.95.0	Success	4,552+16.29 RP
Jul 5, 2026 21:03	Victor Mercklé	CPPg++14.2.0	Success	5,584
Jul 5, 2026 20:53	Kevin Heavey	RUSTrust-1.95.0	Success	4,855
Jul 5, 2026 20:53	Victor Mercklé	CPPg++14.2.0	Success	5,499
Jul 5, 2026 20:52	Kevin Heavey	RUSTrust-1.95.0	Success	4,586+12.29 RP
Jul 5, 2026 20:52	Kevin Heavey	RUSTrust-1.95.0	Success	4,612+235.14 RP
Jul 5, 2026 20:43	Kevin Heavey	RUSTrust-1.95.0	Success	6,096
Jul 5, 2026 20:43	Kevin Heavey	RUSTrust-1.95.0	Success	5,211
Jul 5, 2026 20:42	Kevin Heavey	RUSTrust-1.95.0	Success	5,173+22.53 RP
Jul 5, 2026 20:41	Kevin Heavey	RUSTrust-1.95.0	Success	135,033
Jul 5, 2026 20:30	Victor Mercklé	CPPg++14.2.0	Success	5,605
Jul 5, 2026 20:26	Kevin Heavey	RUSTrust-1.95.0	Success	168,976
Jul 5, 2026 20:25	Kevin Heavey	RUSTrust-1.95.0	Success	5,286
Jul 5, 2026 20:25	Victor Mercklé	CPPg++14.2.0	Success	5,563
Jul 5, 2026 20:21	Kevin Heavey	RUSTrust-1.95.0	Success	5,392
Jul 5, 2026 20:20	Kevin Heavey	RUSTrust-1.95.0	Success	10,128
Jul 5, 2026 20:20	Victor Mercklé	CPPg++14.2.0	Success	5,967
Jul 5, 2026 20:15	Victor Mercklé	CPPg++14.2.0	Success	5,942
Jul 5, 2026 20:06	Kevin Heavey	RUSTrust-1.95.0	Success	9,028
Jul 5, 2026 19:48	Kevin Heavey	RUSTrust-1.95.0	Success	5,529
Jul 5, 2026 19:47	Kevin Heavey	RUSTrust-1.95.0	Success	5,315
Jul 5, 2026 19:43	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 5, 2026 19:38	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 5, 2026 19:35	Kevin Heavey	RUSTrust-1.95.0	Success	5,252
Jul 5, 2026 19:27	Kevin Heavey	RUSTrust-1.95.0	Success	5,813
Jul 5, 2026 19:19	Victor Mercklé	CPPg++14.2.0	Success	6,729
Jul 5, 2026 19:13	Victor Mercklé	CPPg++14.2.0	Success	7,034
Jul 5, 2026 19:06	Victor Mercklé	CPPg++14.2.0	Success	8,712
Jul 5, 2026 19:00	Kevin Heavey	RUSTrust-1.95.0	Success	5,676
Jul 5, 2026 17:47	Kevin Heavey	RUSTrust-1.95.0	Success	5,234+248.35 RP
Jul 5, 2026 17:31	Kevin Heavey	RUSTrust-1.95.0	Success	6,016+117.36 RP
Jul 5, 2026 17:23	Kevin Heavey	RUSTrust-1.95.0	Success	6,473+369.79 RP
Jul 5, 2026 17:08	Kevin Heavey	RUSTrust-1.95.0	Success	8,510+98.08 RP
Jul 5, 2026 16:10	Kevin Heavey	RUSTrust-1.95.0	Success	14,463
Jul 5, 2026 15:30	Kevin Heavey	RUSTrust-1.95.0	Success	12,001
Jul 5, 2026 15:13	Kevin Heavey	RUSTrust-1.95.0	Success	12,120
Jul 5, 2026 14:53	Kevin Heavey	RUSTrust-1.95.0	Success	9,285+317.30 RP
Jul 5, 2026 14:43	Kevin Heavey	RUSTrust-1.95.0	Success	13,163+265.56 RP
Jul 5, 2026 14:20	Teow Hua Jun	CPPg++14.2.0	Success	12,232
Jul 5, 2026 14:02	Teow Hua Jun	CPPg++14.2.0	Success	12,216+26.08 RP
Jul 5, 2026 13:44	Kevin Heavey	RUSTrust-1.95.0	Success	29,200
Jul 5, 2026 13:39	Teow Hua Jun	CPPg++14.2.0	Success	12,618+72.37 RP
Jul 5, 2026 13:35	Kevin Heavey	RUSTrust-1.95.0	Success	20,237+0.56 RP
Jul 5, 2026 13:29	Teow Hua Jun	CPPg++10.5.0	Success	20,640
Jul 5, 2026 13:22	Teow Hua Jun	CPPg++10.5.0	Success	14,031
Jul 5, 2026 13:14	Kevin Heavey	RUSTrust-1.95.0	Success	20,312
Jul 5, 2026 13:13	Kevin Heavey	RUSTrust-1.95.0	Success	20,271
Jul 5, 2026 13:11	Kevin Heavey	RUSTrust-1.95.0	Success	20,295
Jul 5, 2026 13:08	Teow Hua Jun	CPPg++10.5.0	Success	15,380
Jul 5, 2026 12:51	Kevin Heavey	RUSTrust-1.95.0	Success	21,723
Jul 5, 2026 12:49	Kevin Heavey	RUSTrust-1.95.0	Success	20,260+8.29 RP
Jul 5, 2026 12:39	Kevin Heavey	RUSTrust-1.95.0	Success	20,606+5.75 RP

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