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 15, 2026 20:33	wn	CPPclang++18.1.3	Success	27,009
Mar 15, 2026 20:31	wn	CPPclang++18.1.3	Success	26,977
Mar 15, 2026 20:03	Eric Ceglie	CPPclang++18.1.3	Success	10,714
Mar 15, 2026 20:03	Eric Ceglie	CPPclang++18.1.3	Success	11,567
Mar 15, 2026 19:59	Eric Ceglie	CPPclang++18.1.3	Success	67,113
Mar 15, 2026 19:54	Eric Ceglie	CPPclang++18.1.3	Error
Mar 15, 2026 19:50	Eric Ceglie	CPPclang++18.1.3	Success	8,907+10.98 RP
Mar 15, 2026 19:47	Eric Ceglie	CPPclang++18.1.3	Success	8,995+24.77 RP
Mar 15, 2026 19:46	Eric Ceglie	CPPclang++18.1.3	Success	9,200+354.89 RP
Mar 15, 2026 19:40	Eric Ceglie	CPPclang++18.1.3	Success	13,660+35.30 RP
Mar 15, 2026 19:40	Eric Ceglie	CPPclang++18.1.3	Success	14,352+8.58 RP
Mar 15, 2026 19:36	Ondřej Polanecký	CPPclang++18.1.3	Success	76,637
Mar 15, 2026 19:36	Ondřej Polanecký	CPPg++13.3.0	Success	71,039
Mar 15, 2026 19:34	Ondřej Polanecký	CPPg++13.3.0	Success	61,878
Mar 15, 2026 19:30	Ondřej Polanecký	CPPg++13.3.0	Success	62,067
Mar 15, 2026 19:30	Ondřej Polanecký	CPPclang++18.1.3	Success	70,229
Mar 15, 2026 19:28	Eric Ceglie	CPPclang++18.1.3	Success	42,557
Mar 15, 2026 19:21	Ondřej Polanecký	CPPclang++18.1.3	Success	18,420+50.18 RP
Mar 15, 2026 19:19	Ondřej Polanecký	CPPg++13.3.0	Success	44,269
Mar 15, 2026 19:16	Ondřej Polanecký	CPPclang++18.1.3	Success	44,180
Mar 15, 2026 19:02	Ondřej Polanecký	CPPclang++18.1.3	Success	20,961
Mar 15, 2026 19:02	Ondřej Polanecký	CPPg++13.3.0	Success	23,417
Mar 15, 2026 18:41	Ondřej Polanecký	CPPclang++18.1.3	Error
Mar 15, 2026 18:38	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 18:36	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 18:36	Ondřej Polanecký	CPPclang++18.1.3	Error
Mar 15, 2026 18:34	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 17:44	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 17:40	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 17:38	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 17:32	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 16:39	Hung T.Nguyen	CPPg++13.3.0	Error
Mar 15, 2026 16:30	shartgepetto	CPPclang++18.1.3	Success	8,057
Mar 15, 2026 16:30	shartgepetto	CPPclang++18.1.3	Success	8,066
Mar 15, 2026 16:29	shartgepetto	CPPclang++18.1.3	Success	8,030+272.76 RP
Mar 15, 2026 16:23	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 16:21	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 16:20	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 16:16	shartgepetto	CPPclang++18.1.3	Success	10,282+0.09 RP
Mar 15, 2026 16:15	shartgepetto	CPPclang++18.1.3	Success	10,432
Mar 15, 2026 16:15	shartgepetto	CPPclang++18.1.3	Success	10,283+15.54 RP
Mar 15, 2026 16:04	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 16:04	shartgepetto	CPPclang++18.1.3	Success	10,450+87.67 RP
Mar 15, 2026 16:03	shartgepetto	CPPclang++18.1.3	Success	11,504+75.86 RP
Mar 15, 2026 16:01	Sriram Sami	CPPclang++18.1.3	Success	10,167+983.57 RP
Mar 15, 2026 15:57	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 15:21	shartgepetto	CPPclang++18.1.3	Error
Mar 15, 2026 15:16	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 15:08	zielaj	CPPclang++18.1.3	Error
Mar 15, 2026 14:48	caando	CPPg++13.3.0	Success	4,725
Mar 15, 2026 14:45	caando	CPPg++13.3.0	Success	4,682
Mar 15, 2026 14:45	wn	CPPclang++18.1.3	Success	56,820
Mar 15, 2026 14:44	wn	CPPclang++18.1.3	Success	56,836
Mar 15, 2026 14:43	caando	CPPg++13.3.0	Success	4,774
Mar 15, 2026 14:43	wn	CPPclang++18.1.3	Success	56,937
Mar 15, 2026 14:42	wn	CPPclang++18.1.3	Success	56,993
Mar 15, 2026 14:42	shartgepetto	CPPclang++18.1.3	Success	12,604+81.60 RP
Mar 15, 2026 14:39	caando	CPPg++13.3.0	Success	4,753
Mar 15, 2026 14:35	wn	CPPclang++18.1.3	Success	4,291
Mar 15, 2026 14:35	caando	CPPg++13.3.0	Success	4,843
Mar 15, 2026 14:33	wn	CPPclang++18.1.3	Success	4,275
Mar 15, 2026 14:31	caando	CPPg++13.3.0	Success	5,807
Mar 15, 2026 14:30	shartgepetto	CPPclang++18.1.3	Success	14,049+44.10 RP
Mar 15, 2026 14:29	caando	CPPg++13.3.0	Success	6,007
Mar 15, 2026 14:27	eldon-chung	CPPclang++18.1.3	Success	47,977
Mar 15, 2026 14:24	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 14:19	eldon-chung	CPPclang++18.1.3	Success	36,231
Mar 15, 2026 14:17	shartgepetto	CPPg++13.3.0	Success	14,977+667.69 RP
Mar 15, 2026 14:15	eldon-chung	CPPclang++18.1.3	Success	35,766+6.05 RP
Mar 15, 2026 14:10	eldon-chung	CPPclang++18.1.3	Success	47,563
Mar 15, 2026 14:09	caando	CPPg++13.3.0	Success	4,723
Mar 15, 2026 14:08	eldon-chung	CPPclang++18.1.3	Success	47,544
Mar 15, 2026 14:08	caando	CPPg++13.3.0	Success	4,762
Mar 15, 2026 14:06	caando	CPPg++13.3.0	Success	6,549
Mar 15, 2026 14:02	caando	CPPg++13.3.0	Success	4,623
Mar 15, 2026 14:01	caando	CPPg++13.3.0	Success	4,648
Mar 15, 2026 13:59	wn	CPPclang++18.1.3	Success	5,044
Mar 15, 2026 13:34	wn	CPPclang++18.1.3	Success	4,715
Mar 15, 2026 13:29	wn	CPPclang++18.1.3	Success	4,940
Mar 15, 2026 13:27	tqbfjotld-0	CPPg++13.3.0	Success	67,349
Mar 15, 2026 13:26	wn	CPPclang++18.1.3	Success	4,798
Mar 15, 2026 13:24	tqbfjotld-0	CPPg++13.3.0	Success	53,204
Mar 15, 2026 13:16	tqbfjotld-0	CPPg++13.3.0	Success	72,033
Mar 15, 2026 13:14	tqbfjotld-0	CPPg++13.3.0	Success	71,990
Mar 15, 2026 13:14	tqbfjotld-0	CPPg++13.3.0	Success	53,101
Mar 15, 2026 13:13	tqbfjotld-0	CPPg++13.3.0	Success	50,166+8.29 RP
Mar 15, 2026 13:13	tqbfjotld-0	CPPg++13.3.0	Success	52,591
Mar 15, 2026 13:07	tqbfjotld-0	CPPg++13.3.0	Error
Mar 15, 2026 13:05	tqbfjotld-0	CPPg++13.3.0	Success	94,525
Mar 15, 2026 13:02	tqbfjotld-0	CPPg++13.3.0	Success	92,868
Mar 15, 2026 13:00	tqbfjotld-0	CPPg++13.3.0	Error
Mar 15, 2026 13:00	tqbfjotld-0	CPPg++13.3.0	Success	96,008
Mar 15, 2026 13:00	tqbfjotld-0	CPPg++13.3.0	Error
Mar 15, 2026 12:52	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 12:46	eldon-chung	CPPclang++18.1.3	Success	60,427
Mar 15, 2026 12:45	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 12:44	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 12:43	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 12:42	eldon-chung	CPPclang++18.1.3	Error
Mar 15, 2026 12:16	eldon-chung	CPPclang++18.1.3	Success	56,869

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