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 19, 2026 18:54	Daniel Mastalerz	CPPclang++18.1.3	Success	6,790
Feb 19, 2026 18:52	Daniel Mastalerz	CPPclang++18.1.3	Success	6,381
Feb 19, 2026 17:33	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:28	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:26	Daniel Mastalerz	CPPclang++18.1.3	Success	6,400
Feb 19, 2026 17:25	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:22	Daniel Mastalerz	CPPclang++18.1.3	Success	6,336
Feb 19, 2026 17:18	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:16	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:12	Daniel Mastalerz	CPPclang++18.1.3	Success	6,364
Feb 19, 2026 17:11	Daniel Mastalerz	CPPclang++18.1.3	Success	6,656
Feb 19, 2026 17:09	Daniel Mastalerz	CPPclang++18.1.3	Success	7,361
Feb 19, 2026 17:06	Daniel Mastalerz	CPPclang++18.1.3	Success	10,052
Feb 19, 2026 17:04	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 19, 2026 17:03	Daniel Mastalerz	CPPclang++18.1.3	Success	9,131
Feb 19, 2026 16:56	Daniel Mastalerz	CPPclang++18.1.3	Success	8,457
Feb 19, 2026 16:31	Daniel Mastalerz	CPPclang++18.1.3	Success	6,243
Feb 19, 2026 16:27	Serhii Sakhno	CPPg++13.3.0	Success	85,384+1.09 RP
Feb 19, 2026 16:04	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 16:03	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 15:56	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 15:25	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 14:44	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 14:04	lolrdor1gamer	CPPg++13.3.0	Success	36,181+3.82 RP
Feb 19, 2026 14:03	lolrdor1gamer	CPPg++13.3.0	Success	36,688+29.06 RP
Feb 19, 2026 13:56	lolrdor1gamer	CPPg++13.3.0	Success	41,066+80.11 RP
Feb 19, 2026 13:52	lolrdor1gamer	CPPg++13.3.0	Success	61,200+163.40 RP
Feb 19, 2026 13:50	lolrdor1gamer	CPPg++13.3.0	Error
Feb 19, 2026 13:40	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 13:33	Serhii Sakhno	CPPg++13.3.0	Success	86,195
Feb 19, 2026 13:30	Serhii Sakhno	CPPg++13.3.0	Success	87,222
Feb 19, 2026 13:24	Serhii Sakhno	CPPg++13.3.0	Success	86,187+89.06 RP
Feb 19, 2026 11:31	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 11:27	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 10:55	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 10:34	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 10:34	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 10:24	John McCauley	CPPclang++18.1.3	Error
Feb 19, 2026 09:40	John McCauley	CPPg++13.3.0	Error
Feb 19, 2026 09:39	John McCauley	CPPg++13.3.0	Error
Feb 19, 2026 09:36	John McCauley	CPPg++13.3.0	Error
Feb 19, 2026 08:33	lipapipa	CPPg++13.3.0	Success	6,193
Feb 19, 2026 07:55	lipapipa	CPPg++13.3.0	Success	6,159
Feb 19, 2026 07:30	lipapipa	CPPg++13.3.0	Success	6,263
Feb 19, 2026 05:18	Josu San Martin	CPPg++13.3.0	Success	6,137
Feb 19, 2026 05:11	Josu San Martin	CPPg++13.3.0	Success	6,121
Feb 19, 2026 05:08	Josu San Martin	CPPg++13.3.0	Success	6,034
Feb 19, 2026 04:59	Josu San Martin	CPPclang++18.1.3	Success	6,300
Feb 19, 2026 04:50	Josu San Martin	CPPg++13.3.0	Success	6,121
Feb 19, 2026 04:22	Josu San Martin	CPPg++13.3.0	Success	6,059
Feb 19, 2026 03:19	Josu San Martin	CPPclang++18.1.3	Error
Feb 19, 2026 03:09	Josu San Martin	CPPg++13.3.0	Success	61,181
Feb 19, 2026 03:08	Josu San Martin	CPPg++13.3.0	Success	61,171
Feb 19, 2026 02:56	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 02:51	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 02:31	Josu San Martin	CPPclang++18.1.3	Success	6,001
Feb 19, 2026 02:26	Josu San Martin	CPPclang++18.1.3	Error
Feb 19, 2026 02:25	Josu San Martin	CPPclang++18.1.3	Success	6,195
Feb 19, 2026 02:23	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 02:07	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 01:55	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 01:43	Josu San Martin	CPPg++13.3.0	Success	6,152
Feb 19, 2026 01:42	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 01:36	Josu San Martin	CPPg++13.3.0	Success	6,243
Feb 19, 2026 01:35	Josu San Martin	CPPg++13.3.0	Success	6,212
Feb 19, 2026 01:23	Josu San Martin	CPPg++13.3.0	Success	6,293
Feb 19, 2026 01:21	Josu San Martin	CPPg++13.3.0	Success	6,284
Feb 19, 2026 01:17	Serhii Sakhno	CPPg++13.3.0	Error
Feb 19, 2026 01:15	Josu San Martin	CPPg++13.3.0	Success	6,226
Feb 19, 2026 01:10	Josu San Martin	CPPg++13.3.0	Success	6,446
Feb 19, 2026 01:04	Serhii Sakhno	CPPg++13.3.0	Error
Feb 19, 2026 01:00	Serhii Sakhno	CPPg++13.3.0	Error
Feb 19, 2026 01:00	Josu San Martin	CPPg++13.3.0	Success	516,406
Feb 19, 2026 00:58	Serhii Sakhno	CPPg++13.3.0	Error
Feb 19, 2026 00:58	Mikołaj Uzarski	CPPclang++18.1.3	Error
Feb 19, 2026 00:57	Josu San Martin	CPPg++13.3.0	Success	6,243
Feb 19, 2026 00:52	Serhii Sakhno	CPPg++13.3.0	Success	518,420
Feb 19, 2026 00:49	Mikołaj Uzarski	CPPclang++18.1.3	Error
Feb 19, 2026 00:49	Serhii Sakhno	CPPg++13.3.0	Success	523,159
Feb 19, 2026 00:48	Serhii Sakhno	CPPg++13.3.0	Error
Feb 19, 2026 00:47	Serhii Sakhno	CPPg++13.3.0	Success	520,643
Feb 19, 2026 00:44	Mikołaj Uzarski	CPPclang++18.1.3	Success	7,049
Feb 19, 2026 00:42	Serhii Sakhno	CPPg++13.3.0	Success	1,257,704
Feb 19, 2026 00:39	Josu San Martin	CPPg++13.3.0	Success	6,302
Feb 19, 2026 00:38	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,043
Feb 19, 2026 00:22	Serhii Sakhno	CPPg++13.3.0	Success	2,064,293
Feb 19, 2026 00:21	Josu San Martin	CPPg++13.3.0	Success	6,474
Feb 19, 2026 00:09	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,125
Feb 19, 2026 00:03	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,030
Feb 19, 2026 00:01	wn	CPPclang++18.1.3	Success	5,369
Feb 18, 2026 23:58	wn	CPPclang++18.1.3	Error
Feb 18, 2026 23:57	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,140
Feb 18, 2026 23:54	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 23:53	wn	CPPclang++18.1.3	Success	5,355+26.13 RP
Feb 18, 2026 23:51	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,961
Feb 18, 2026 23:50	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,030
Feb 18, 2026 23:49	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,781
Feb 18, 2026 23:47	wn	CPPclang++18.1.3	Error
Feb 18, 2026 23:45	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,805
Feb 18, 2026 23:44	Josu San Martin	CPPg++13.3.0	Success	6,361

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