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.

Back to listMar 12, 2026 20:12

Josu San MartinScore: 5,289Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 12, 2026 20:11	4,944	61,095,223	39,032,000	2,001,000	2,404,352
2	Mar 12, 2026 20:11	4,965	66,433,702	39,202,000	2,010,000	2,277,376
3	Mar 12, 2026 20:11	4,966	62,779,753	39,206,000	2,010,000	2,412,544
4	Mar 12, 2026 20:11	5,062	65,519,038	40,016,000	2,000,000	2,281,472
5	Mar 12, 2026 20:11	5,065	66,240,596	40,038,000	2,001,000	2,281,472
6	Mar 12, 2026 20:11	5,129	67,597,819	41,560,000	1,013,000	2,400,256
7	Mar 12, 2026 20:11	5,159	72,500,512	40,831,000	1,991,000	2,416,640
8	Mar 12, 2026 20:11	5,184	63,572,625	41,025,000	2,001,000	2,277,376
9	Mar 12, 2026 20:11	5,188	64,397,839	41,055,000	2,002,000	2,281,472
10	Mar 12, 2026 20:11	5,242	67,068,753	42,497,000	1,011,000	2,281,472
11	Mar 12, 2026 20:11	5,246	70,303,137	42,533,000	1,012,000	2,281,472
12	Mar 12, 2026 20:11	5,252	73,064,549	42,582,000	1,013,000	2,281,472
13	Mar 12, 2026 20:11	5,252	66,417,250	42,578,000	1,013,000	2,502,656
14	Mar 12, 2026 20:11	5,257	73,110,310	42,623,000	1,014,000	2,281,472
15	Mar 12, 2026 20:11	5,257	68,408,897	42,619,000	1,014,000	2,400,256
16	Mar 12, 2026 20:11	5,289	63,088,266	41,903,000	1,995,000	2,416,640
17	Mar 12, 2026 20:11	5,294	67,745,908	41,943,000	1,997,000	2,281,472
18	Mar 12, 2026 20:11	5,318	65,372,869	42,137,000	2,006,000	2,281,472
19	Mar 12, 2026 20:10	14,818	144,256,174	120,989,000	1,999,000	2,367,488
20	Mar 12, 2026 20:10	14,820	144,205,137	121,007,000	2,000,000	2,355,200
21	Mar 12, 2026 20:10	14,935	147,693,313	121,965,000	1,999,000	2,473,984
22	Mar 12, 2026 20:12	19,643	184,886,250	161,038,000	2,000,000	2,482,176
23	Mar 12, 2026 20:12	19,664	188,101,339	162,214,000	1,001,000	2,371,584
24	Mar 12, 2026 20:12	19,847	189,039,418	162,734,000	1,996,000	2,482,176
25	Mar 12, 2026 20:12	27,073	252,745,857	223,710,000	998,000	2,412,544
26	Mar 12, 2026 20:12	27,201	256,650,210	225,769,000	0	2,383,872
27	Mar 12, 2026 20:12	27,231	250,442,677	224,017,000	2,000,000	2,412,544
28	Mar 12, 2026 20:12	27,875	255,665,191	230,362,000	1,001,000	2,465,792
29	Mar 12, 2026 20:12	28,110	256,016,173	232,316,000	1,001,000	2,469,888
30	Mar 12, 2026 20:12	28,219	253,916,126	233,216,000	1,000,000	2,441,216

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