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 26, 2026 21:48	Daniel Mastalerz	CPPclang++18.1.3	Success	5,564
Feb 26, 2026 21:47	Daniel Mastalerz	CPPclang++18.1.3	Success	5,566
Feb 26, 2026 21:46	Daniel Mastalerz	CPPclang++18.1.3	Success	6,740
Feb 26, 2026 21:44	Daniel Mastalerz	CPPclang++18.1.3	Success	5,684
Feb 26, 2026 21:43	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,160
Feb 26, 2026 21:42	Daniel Mastalerz	CPPclang++18.1.3	Success	5,561
Feb 26, 2026 21:42	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,248
Feb 26, 2026 21:37	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,278
Feb 26, 2026 21:36	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,278
Feb 26, 2026 21:35	Daniel Mastalerz	CPPclang++18.1.3	Success	5,401
Feb 26, 2026 21:35	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,520
Feb 26, 2026 21:29	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 26, 2026 21:26	Daniel Mastalerz	CPPclang++18.1.3	Success	5,550
Feb 26, 2026 21:24	Daniel Mastalerz	CPPclang++18.1.3	Success	5,619
Feb 26, 2026 21:21	Daniel Mastalerz	CPPclang++18.1.3	Success	5,626
Feb 26, 2026 21:15	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 26, 2026 20:24	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,157
Feb 26, 2026 20:22	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,163
Feb 26, 2026 20:21	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,162
Feb 26, 2026 15:45	Genos0	CPPg++13.3.0	Success	75,061+0.38 RP
Feb 26, 2026 15:44	Genos0	CPPg++13.3.0	Success	78,935
Feb 26, 2026 15:44	Genos0	CPPg++13.3.0	Success	79,873
Feb 26, 2026 15:43	Genos0	CPPg++13.3.0	Success	75,273+0.91 RP
Feb 26, 2026 15:42	Genos0	CPPg++13.3.0	Success	79,233
Feb 26, 2026 15:41	Genos0	CPPg++13.3.0	Success	87,496
Feb 26, 2026 12:27	Genos0	CPPg++13.3.0	Success	75,829
Feb 26, 2026 12:25	Genos0	CPPg++13.3.0	Success	75,790+127.10 RP
Feb 26, 2026 12:12	Genos0	CPPg++13.3.0	Success	2,066,106
Feb 26, 2026 09:35	lipapipa	CPPg++13.3.0	Success	5,818
Feb 26, 2026 09:35	lipapipa	CPPg++13.3.0	Success	5,884
Feb 26, 2026 09:35	lipapipa	CPPg++13.3.0	Success	5,925
Feb 26, 2026 09:34	lipapipa	CPPg++13.3.0	Success	5,882
Feb 26, 2026 09:31	lipapipa	CPPg++13.3.0	Success	5,859
Feb 26, 2026 09:17	lipapipa	CPPg++13.3.0	Success	5,971
Feb 26, 2026 07:03	Genos0	CPPg++13.3.0	Success	2,066,165
Feb 26, 2026 07:02	Genos0	CPPg++13.3.0	Success	2,067,249+4.84 RP
Feb 26, 2026 02:11	sophia	CPPg++13.3.0	Error
Feb 26, 2026 02:07	sophia	CPPg++13.3.0	Success	40,081+82.56 RP
Feb 26, 2026 02:04	sophia	CPPg++13.3.0	Success	59,904+0.87 RP
Feb 26, 2026 02:02	sophia	CPPg++13.3.0	Success	60,218+15.14 RP
Feb 26, 2026 02:00	sophia	CPPg++13.3.0	Success	66,261+150.92 RP
Feb 25, 2026 20:28	Daniel Mastalerz	CPPclang++18.1.3	Success	5,437
Feb 25, 2026 20:18	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 25, 2026 20:13	Daniel Mastalerz	CPPclang++18.1.3	Success	5,469
Feb 25, 2026 19:50	Daniel Mastalerz	CPPclang++18.1.3	Success	5,487
Feb 25, 2026 19:47	Daniel Mastalerz	CPPclang++18.1.3	Success	6,565
Feb 25, 2026 19:36	Daniel Mastalerz	CPPclang++18.1.3	Success	5,447
Feb 25, 2026 19:36	Daniel Mastalerz	CPPclang++18.1.3	Success	5,644
Feb 25, 2026 19:29	Daniel Mastalerz	CPPclang++18.1.3	Success	5,452
Feb 25, 2026 19:07	Ropi777	CPPg++13.3.0	Error
Feb 25, 2026 19:02	Ropi777	CPPg++13.3.0	Success	72,171+4.80 RP
Feb 25, 2026 18:59	Ropi777	CPPg++13.3.0	Success	75,136
Feb 25, 2026 18:51	Ropi777	CPPg++13.3.0	Success	74,759+128.92 RP
Feb 25, 2026 18:49	Ropi777	CPPg++13.3.0	Error
Feb 25, 2026 18:47	Ropi777	CPPg++13.3.0	Error
Feb 25, 2026 18:36	Ropi777	CPPg++13.3.0	Success	2,066,856+4.84 RP
Feb 24, 2026 22:17	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,137
Feb 24, 2026 22:13	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,521
Feb 24, 2026 22:10	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,123
Feb 24, 2026 22:05	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,120
Feb 24, 2026 22:01	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,126
Feb 24, 2026 21:58	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,299
Feb 24, 2026 21:57	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,140
Feb 24, 2026 21:55	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,122
Feb 24, 2026 21:53	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,421
Feb 24, 2026 21:49	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,353
Feb 24, 2026 21:42	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,124
Feb 24, 2026 21:40	wn	CPPclang++18.1.3	Success	4,434
Feb 24, 2026 21:37	wn	CPPclang++18.1.3	Success	4,410
Feb 24, 2026 21:35	Daniel Mastalerz	CPPclang++18.1.3	Success	5,476
Feb 24, 2026 21:33	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,120+1.52 RP
Feb 24, 2026 21:30	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 24, 2026 21:28	wn	CPPclang++18.1.3	Success	4,409
Feb 24, 2026 21:26	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,124+18.11 RP
Feb 24, 2026 21:23	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,339
Feb 24, 2026 21:21	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,174
Feb 24, 2026 21:15	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,028
Feb 24, 2026 21:15	Mikołaj Uzarski	CPPclang++18.1.3	Success	6,368
Feb 24, 2026 21:12	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,420
Feb 24, 2026 21:06	wn	CPPclang++18.1.3	Success	4,413
Feb 24, 2026 21:05	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,176
Feb 24, 2026 21:04	wn	CPPclang++18.1.3	Success	5,448
Feb 24, 2026 21:04	wn	CPPclang++18.1.3	Success	5,522
Feb 24, 2026 21:02	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 24, 2026 21:01	Daniel Mastalerz	CPPclang++18.1.3	Success	5,400+0.34 RP
Feb 24, 2026 20:59	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,365
Feb 24, 2026 20:57	wn	CPPclang++18.1.3	Success	5,187
Feb 24, 2026 20:54	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,553
Feb 24, 2026 20:52	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,533
Feb 24, 2026 20:51	wn	CPPclang++18.1.3	Success	5,179
Feb 24, 2026 20:49	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,360
Feb 24, 2026 20:47	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,307
Feb 24, 2026 20:46	Mikołaj Uzarski	CPPclang++18.1.3	Error
Feb 24, 2026 20:42	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,481
Feb 24, 2026 20:41	Mikołaj Uzarski	CPPclang++18.1.3	Success	5,884
Feb 24, 2026 20:38	wn	CPPclang++18.1.3	Success	5,427
Feb 24, 2026 20:36	Daniel Mastalerz	CPPclang++18.1.3	Success	5,432
Feb 24, 2026 20:34	Daniel Mastalerz	CPPclang++18.1.3	Success	5,407
Feb 24, 2026 20:33	Daniel Mastalerz	CPPclang++18.1.3	Success	5,458
Feb 24, 2026 20:32	Daniel Mastalerz	CPPclang++18.1.3	Success	5,427

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