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
Aug 23, 2026 19:26	Victor Mercklé	CPPg++14.2.0	Success	3,996
Aug 23, 2026 19:22	Victor Mercklé	CPPg++14.2.0	Success	3,769
Aug 23, 2026 19:17	Victor Mercklé	CPPg++14.2.0	Success	3,777
Aug 23, 2026 19:03	Victor Mercklé	CPPg++14.2.0	Success	3,773
Aug 23, 2026 18:59	Victor Mercklé	CPPg++14.2.0	Success	3,783
Aug 23, 2026 18:50	Victor Mercklé	CPPg++14.2.0	Success	3,809
Aug 23, 2026 18:46	Victor Mercklé	CPPg++14.2.0	Success	3,788
Aug 23, 2026 18:43	Victor Mercklé	CPPg++14.2.0	Success	3,779
Aug 23, 2026 18:36	Victor Mercklé	CPPg++14.2.0	Success	3,801
Aug 23, 2026 18:26	Victor Mercklé	CPPg++14.2.0	Success	3,858
Aug 23, 2026 18:21	Victor Mercklé	CPPg++14.2.0	Success	3,922
Aug 23, 2026 18:13	Victor Mercklé	CPPg++14.2.0	Success	3,852
Aug 23, 2026 18:06	Victor Mercklé	CPPg++14.2.0	Success	3,818
Aug 23, 2026 18:02	Victor Mercklé	CPPg++14.2.0	Success	3,806
Aug 23, 2026 17:50	Victor Mercklé	CPPg++14.2.0	Success	3,774
Aug 23, 2026 17:45	Victor Mercklé	CPPg++14.2.0	Success	3,769
Aug 23, 2026 17:38	Victor Mercklé	CPPg++14.2.0	Success	3,790
Aug 23, 2026 17:33	Victor Mercklé	CPPg++14.2.0	Success	3,754+3.54 RP
Aug 23, 2026 17:26	Victor Mercklé	CPPg++14.2.0	Success	3,830
Aug 23, 2026 17:22	Victor Mercklé	CPPg++14.2.0	Success	3,788
Aug 23, 2026 17:14	Victor Mercklé	CPPg++14.2.0	Success	81,844
Aug 23, 2026 17:06	Victor Mercklé	CPPg++14.2.0	Success	3,951
Aug 23, 2026 16:58	Victor Mercklé	CPPg++14.2.0	Success	4,630
Aug 22, 2026 08:50	wn	CPPg++14.2.0	Success	3,466
Aug 21, 2026 19:50	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:49	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:49	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:44	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:43	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:40	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:38	Tony	CPPg++14.2.0	Error
Aug 21, 2026 19:34	Tony	CPPg++14.2.0	Error
Aug 21, 2026 16:52	Joshua Montross	CPPg++13.3.0	Success	9,030+634.02 RP
Aug 21, 2026 15:01	Andrew Epstein	CPPg++14.2.0	Success	3,831+16.25 RP
Aug 21, 2026 10:35	C21	CPPclang++20.1.2	Error
Aug 21, 2026 10:35	C21	CPPg++10.5.0	Success	26,630+87.45 RP
Aug 21, 2026 04:14	Andrew Epstein	CPPg++14.2.0	Success	3,855+79.58 RP
Aug 21, 2026 03:57	Andrew Epstein	CPPg++14.2.0	Success	4,196
Aug 21, 2026 03:56	Andrew Epstein	CPPg++10.5.0	Success	4,095
Aug 21, 2026 03:55	Andrew Epstein	CPPg++14.2.0	Success	4,017
Aug 21, 2026 03:46	Andrew Epstein	CPPg++14.2.0	Success	4,012
Aug 21, 2026 02:43	Andrew Epstein	CPPg++14.2.0	Success	4,051
Aug 21, 2026 02:39	Andrew Epstein	CPPg++14.2.0	Success	4,023
Aug 21, 2026 02:33	Andrew Epstein	CPPg++14.2.0	Success	4,047
Aug 21, 2026 02:25	Andrew Epstein	CPPg++14.2.0	Error	+111.19 RP
Aug 21, 2026 02:08	Andrew Epstein	CPPg++14.2.0	Error	+102.30 RP
Aug 21, 2026 01:50	Andrew Epstein	CPPg++14.2.0	Success	4,367
Aug 21, 2026 01:39	Andrew Epstein	CPPg++10.5.0	Success	4,346+17.86 RP
Aug 21, 2026 01:38	Andrew Epstein	CPPg++14.2.0	Success	4,380+55.93 RP
Aug 21, 2026 01:25	Andrew Epstein	CPPg++10.5.0	Success	4,490+70.14 RP
Aug 21, 2026 01:24	Andrew Epstein	CPPclang++20.1.2	Success	4,881
Aug 21, 2026 01:23	Andrew Epstein	CPPg++14.2.0	Error
Aug 21, 2026 01:11	Andrew Epstein	CPPg++14.2.0	Error	+354.58 RP
Aug 21, 2026 00:19	Andrew Epstein	CPPg++14.2.0	Error	+141.05 RP
Aug 21, 2026 00:18	Andrew Epstein	CPPg++14.2.0	Success	6,032
Aug 21, 2026 00:15	Andrew Epstein	CPPg++10.5.0	Success	6,123
Aug 20, 2026 23:33	Andrew Epstein	CPPg++14.2.0	Success	6,019+29.82 RP
Aug 20, 2026 23:26	Andrew Epstein	CPPg++14.2.0	Error
Aug 20, 2026 23:19	Andrew Epstein	CPPg++14.2.0	Success	10,640
Aug 20, 2026 22:21	Andrew Epstein	CPPg++14.2.0	Error
Aug 20, 2026 22:16	Andrew Epstein	CPPg++14.2.0	Error
Aug 20, 2026 22:15	Andrew Epstein	CPPg++14.2.0	Error	+638.44 RP
Aug 20, 2026 22:10	Andrew Epstein	CPPg++14.2.0	Success	10,069+880.82 RP
Aug 20, 2026 21:59	Andrew Epstein	CPPg++10.5.0	Success	89,029+106.23 RP
Aug 20, 2026 18:59	C21	CPPclang++19.1.1	Success	34,714+57.24 RP
Aug 20, 2026 18:58	C21	CPPg++10.5.0	Success	43,323+42.70 RP
Aug 19, 2026 07:56	Lan Hoang Dao	CPPg++10.5.0	Success	79,950
Aug 19, 2026 07:39	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 19, 2026 07:33	Lan Hoang Dao	CPPg++10.5.0	Success	93,567
Aug 19, 2026 06:31	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 18, 2026 20:41	C21	CPPg++10.5.0	Success	53,155+10.93 RP
Aug 18, 2026 20:39	C21	CPPg++10.5.0	Error
Aug 18, 2026 18:27	Lan Hoang Dao	CPPg++10.5.0	Success	86,988
Aug 18, 2026 18:17	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 18, 2026 17:46	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 18, 2026 08:13	flavio87	CPPclang++18.1.3	Success	3,645+102.17 RP
Aug 18, 2026 08:09	boop34	CPPg++14.2.0	Success	9,060
Aug 18, 2026 05:46	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 18, 2026 05:25	Lan Hoang Dao	CPPg++10.5.0	Error
Aug 17, 2026 23:57	flavio87	CPPclang++18.1.3	Success	4,170
Aug 17, 2026 23:55	flavio87	CPPclang++18.1.3	Success	3,786+153.13 RP
Aug 17, 2026 23:47	flavio87	CPPclang++18.1.3	Success	4,080
Aug 17, 2026 22:20	Josu San Martin	CSHARP10.0.7	Success	5,110
Aug 17, 2026 22:06	Josu San Martin	ZIG0.15.1	Success	4,951
Aug 17, 2026 21:52	Josu San Martin	GOgo1.26.2	Success	5,104
Aug 17, 2026 21:23	Josu San Martin	CPPg++10.5.0	Success	5,023
Aug 17, 2026 20:02	Navneet Raj	CPPg++14.2.0	Error
Aug 17, 2026 19:55	Navneet Raj	CPPg++14.2.0	Success	55,577+4.39 RP
Aug 17, 2026 19:49	Navneet Raj	CPPg++10.5.0	Success	56,966+60.63 RP
Aug 17, 2026 19:46	flavio87	CPPclang++18.1.3	Success	4,019+321.33 RP
Aug 17, 2026 19:37	Navneet Raj	CPPg++10.5.0	Success	87,025+2.64 RP
Aug 17, 2026 19:35	Navneet Raj	CPPg++10.5.0	Success	89,068+112.27 RP
Aug 17, 2026 13:49	flavio87	CPPg++14.2.0	Success	4,615+128.53 RP
Aug 16, 2026 23:13	Tomislav Tunkovic	GOgo1.26.2	Success	225,873
Aug 16, 2026 23:13	Tomislav Tunkovic	ZIG0.15.1	Success	5,624
Aug 16, 2026 23:12	Tomislav Tunkovic	RUSTrust-1.95.0	Success	6,026
Aug 16, 2026 19:14	marko1597	CPPg++13.3.0	Success	4,620
Aug 16, 2026 19:14	marko1597	CPPg++13.3.0	Success	4,577+3.34 RP
Aug 16, 2026 19:14	marko1597	CPPg++13.3.0	Success	4,691
Aug 16, 2026 18:56	marko1597	CPPclang++20.1.2	Success	5,474

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