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
Mar 2, 2026 15:10	caando	CPPg++13.3.0	Error
Mar 2, 2026 12:32	Priyansh Rathi	RUSTrust-1.93.1	Success	42,747+1.33 RP
Mar 2, 2026 12:20	Priyansh Rathi	CPPg++13.3.0	Success	46,918
Mar 2, 2026 12:06	Priyansh Rathi	RUSTrust-1.93.1	Error
Mar 2, 2026 12:01	Priyansh Rathi	RUSTrust-1.93.1	Error
Mar 2, 2026 11:57	lrexer	CPPclang++18.1.3	Success	191,735+47.32 RP
Mar 2, 2026 11:55	Priyansh Rathi	RUSTrust-1.93.1	Success	42,992+3.53 RP
Mar 2, 2026 11:52	Priyansh Rathi	RUSTrust-1.93.1	Success	49,290
Mar 2, 2026 11:45	Priyansh Rathi	RUSTrust-1.93.1	Success	43,654+8.70 RP
Mar 2, 2026 11:40	lrexer	CPPg++13.3.0	Success	2,067,745+4.84 RP
Mar 2, 2026 11:35	Priyansh Rathi	RUSTrust-1.93.1	Success	45,982
Mar 2, 2026 11:34	Priyansh Rathi	RUSTrust-1.93.1	Error
Mar 2, 2026 11:30	Priyansh Rathi	RUSTrust-1.93.1	Success	45,378+4.03 RP
Mar 2, 2026 11:25	Priyansh Rathi	RUSTrust-1.93.1	Success	46,223+31.97 RP
Mar 2, 2026 11:20	Priyansh Rathi	RUSTrust-1.93.1	Success	62,376
Mar 2, 2026 10:59	Priyansh Rathi	RUSTrust-1.93.1	Error
Mar 2, 2026 10:52	Priyansh Rathi	RUSTrust-1.93.1	Success	78,511
Mar 2, 2026 10:50	Priyansh Rathi	RUSTrust-1.93.1	Success	61,046
Mar 2, 2026 10:48	Priyansh Rathi	RUSTrust-1.93.1	Success	66,420
Mar 2, 2026 10:40	Priyansh Rathi	RUSTrust-1.93.1	Success	68,423
Mar 2, 2026 10:37	Priyansh Rathi	RUSTrust-1.93.1	Success	54,276
Mar 2, 2026 10:36	Priyansh Rathi	RUSTrust-1.93.1	Success	54,238+157.41 RP
Mar 2, 2026 10:20	Priyansh Rathi	RUSTrust-1.93.1	Success	370,949+26.96 RP
Mar 2, 2026 10:18	Priyansh Rathi	CPPclang++18.1.3	Error
Mar 2, 2026 09:58	lipapipa	CPPclang++18.1.3	Success	6,263
Mar 2, 2026 09:57	lipapipa	CPPclang++18.1.3	Success	6,272
Mar 2, 2026 08:23	wn	CPPclang++18.1.3	Success	6,364
Mar 1, 2026 22:46	wn	CPPclang++18.1.3	Error
Mar 1, 2026 22:46	wn	CPPclang++18.1.3	Success	4,410
Mar 1, 2026 22:45	wn	CPPclang++18.1.3	Error
Mar 1, 2026 21:21	satoru.net	CPPg++13.3.0	Success	41,676
Mar 1, 2026 21:16	wn	CPPclang++18.1.3	Success	4,465
Mar 1, 2026 21:12	wn	CPPclang++18.1.3	Success	4,410
Mar 1, 2026 21:06	wn	CPPclang++18.1.3	Success	4,459
Mar 1, 2026 21:04	wn	CPPclang++18.1.3	Success	4,404
Mar 1, 2026 21:02	wn	CPPclang++18.1.3	Success	4,410
Mar 1, 2026 15:03	Kacper Grzybowski	CPPg++13.3.0	Error
Mar 1, 2026 15:03	Kacper Grzybowski	CPPg++13.3.0	Error
Mar 1, 2026 14:57	Kacper Grzybowski	RUSTrust-1.93.1	Success	55,204
Mar 1, 2026 14:56	Kacper Grzybowski	RUSTrust-1.93.1	Error
Mar 1, 2026 14:47	Kacper Grzybowski	CPPg++13.3.0	Success	56,415
Mar 1, 2026 14:45	Kacper Grzybowski	CPPg++13.3.0	Success	64,307
Mar 1, 2026 14:37	Kacper Grzybowski	CPPg++13.3.0	Success	72,472
Mar 1, 2026 14:07	Kacper Grzybowski	CPPg++13.3.0	Success	52,925
Mar 1, 2026 09:13	Benji White	CPPg++13.3.0	Success	81,549
Mar 1, 2026 09:03	Benji White	CPPg++13.3.0	Success	56,613+28.62 RP
Mar 1, 2026 07:41	Benji White	CPPg++13.3.0	Success	67,559+80.37 RP
Feb 28, 2026 23:15	wn	CPPclang++18.1.3	Success	4,391
Feb 28, 2026 22:58	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:58	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:56	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:37	wn	CPPclang++18.1.3	Success	4,407
Feb 28, 2026 22:29	lipapipa	CPPg++13.3.0	Success	5,794+5.35 RP
Feb 28, 2026 22:25	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:25	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:25	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:25	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:24	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:24	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 22:24	lipapipa	CPPg++13.3.0	Error
Feb 28, 2026 21:29	wn	CPPclang++18.1.3	Success	4,571
Feb 28, 2026 20:31	wn	CPPclang++18.1.3	Success	4,413
Feb 28, 2026 20:31	wn	CPPclang++18.1.3	Success	4,438
Feb 28, 2026 20:02	wn	CPPclang++18.1.3	Success	4,975
Feb 28, 2026 20:01	wn	CPPclang++18.1.3	Success	5,443
Feb 28, 2026 20:00	wn	CPPclang++18.1.3	Success	4,702
Feb 28, 2026 19:59	wn	CPPclang++18.1.3	Success	4,685
Feb 28, 2026 19:58	wn	CPPclang++18.1.3	Success	4,681
Feb 28, 2026 19:57	wn	CPPclang++18.1.3	Error
Feb 28, 2026 19:56	wn	CPPclang++18.1.3	Success	4,438
Feb 28, 2026 19:30	wn	CPPclang++18.1.3	Success	4,437
Feb 28, 2026 19:28	wn	CPPclang++18.1.3	Success	4,409
Feb 28, 2026 19:27	wn	CPPclang++18.1.3	Success	4,704
Feb 28, 2026 19:26	wn	CPPclang++18.1.3	Success	4,616
Feb 28, 2026 19:25	wn	CPPclang++18.1.3	Success	4,742
Feb 28, 2026 19:24	wn	CPPclang++18.1.3	Success	4,755
Feb 28, 2026 19:23	wn	CPPclang++18.1.3	Success	5,665
Feb 28, 2026 19:22	wn	CPPclang++18.1.3	Error
Feb 28, 2026 19:20	wn	CPPclang++18.1.3	Success	5,651
Feb 28, 2026 19:19	wn	CPPclang++18.1.3	Success	5,438
Feb 28, 2026 19:10	wn	CPPclang++18.1.3	Success	4,680
Feb 28, 2026 09:45	Manu	RUSTrust-1.93.1	Success	89,680
Feb 28, 2026 09:39	Manu	RUSTrust-1.93.1	Success	89,530+84.63 RP
Feb 28, 2026 09:30	Manu	RUSTrust-1.93.1	Success	369,448+27.07 RP
Feb 28, 2026 08:57	Benji White	CPPg++13.3.0	Success	147,829+62.81 RP
Feb 28, 2026 07:54	Benji White	CPPg++13.3.0	Success	2,066,873+4.84 RP
Feb 28, 2026 01:02	c	CPPg++13.3.0	Error
Feb 28, 2026 01:00	c	CPPg++13.3.0	Error
Feb 28, 2026 00:56	c	CPPg++13.3.0	Success	2,020,862+4.95 RP
Feb 27, 2026 22:34	lipapipa	CPPg++13.3.0	Success	5,837
Feb 27, 2026 22:09	lipapipa	CPPg++13.3.0	Error
Feb 27, 2026 21:14	lipapipa	CPPg++13.3.0	Success	5,812+0.59 RP
Feb 27, 2026 21:11	lipapipa	CPPg++13.3.0	Success	5,822
Feb 27, 2026 21:03	defiance	RUSTrust-1.93.1	Success	99,430+73.55 RP
Feb 27, 2026 21:01	defiance	RUSTrust-1.93.1	Success	370,042+27.02 RP
Feb 27, 2026 19:49	lipapipa	CPPg++13.3.0	Success	5,973
Feb 27, 2026 18:58	lipapipa	CPPg++13.3.0	Success	18,762
Feb 27, 2026 18:57	lipapipa	CPPg++13.3.0	Success	28,952
Feb 27, 2026 18:55	lipapipa	CPPg++13.3.0	Error
Feb 27, 2026 13:40	Genos0	CPPg++13.3.0	Success	71,270+0.01 RP

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