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.

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 31, 2026 19:13	4,224	60,990,228	33,055,000	2,003,000	2,498,560
2	Mar 18, 2026 21:00	4,226	54,931,565	33,070,000	2,004,000	2,273,280
3	Mar 31, 2026 19:13	4,229	58,780,880	33,093,000	2,005,000	2,277,376
4	Mar 18, 2026 21:05	4,232	59,434,180	33,116,000	2,007,000	2,273,280
5	Mar 18, 2026 21:05	4,233	56,057,926	33,128,000	2,007,000	2,490,368
6	Mar 18, 2026 21:05	4,234	62,318,994	33,138,000	2,008,000	2,490,368
7	Mar 18, 2026 21:05	4,235	60,188,939	33,144,000	2,008,000	2,273,280
8	Mar 18, 2026 21:00	4,235	55,833,347	33,143,000	2,008,000	2,273,280
9	Mar 18, 2026 21:02	4,236	59,758,539	33,148,000	2,008,000	2,494,464
10	Mar 18, 2026 21:00	4,236	62,778,316	33,152,000	2,009,000	2,498,560
11	Mar 18, 2026 21:00	4,237	59,581,783	33,159,000	2,009,000	2,273,280
12	Mar 18, 2026 21:05	4,238	61,299,739	33,167,000	2,010,000	2,273,280
13	Mar 22, 2026 19:54	4,238	58,842,260	33,163,000	2,009,000	2,277,376
14	Mar 20, 2026 20:42	4,239	57,198,584	33,170,000	2,010,000	2,273,280
15	Mar 31, 2026 19:13	4,240	61,180,637	33,179,000	2,010,000	2,277,376
16	Mar 22, 2026 19:54	4,240	50,891,986	33,185,000	2,011,000	2,486,272
17	Mar 22, 2026 19:54	4,244	56,844,935	34,222,000	1,006,000	2,277,376
18	Mar 18, 2026 21:26	4,246	58,051,443	34,234,000	1,006,000	2,273,280
19	Mar 18, 2026 21:05	4,247	64,348,890	33,239,000	2,014,000	2,273,280
20	Mar 18, 2026 21:05	4,249	59,007,625	33,248,000	2,015,000	2,494,464
21	Mar 18, 2026 21:05	4,251	57,897,258	34,278,000	1,008,000	2,273,280
22	Mar 18, 2026 21:00	4,252	60,410,595	34,281,000	1,008,000	2,273,280
23	Mar 31, 2026 19:13	4,252	58,922,806	33,274,000	2,016,000	2,277,376
24	Mar 31, 2026 19:13	4,253	59,149,724	34,295,000	1,008,000	2,277,376
25	Mar 31, 2026 19:13	4,254	63,725,763	34,300,000	1,008,000	2,277,376
26	Mar 27, 2026 17:44	4,255	55,530,831	34,306,000	1,009,000	2,277,376
27	Mar 18, 2026 21:00	4,257	56,511,560	34,320,000	1,009,000	2,494,464
28	Mar 22, 2026 19:54	4,257	56,494,725	34,321,000	1,009,000	2,502,656
29	Mar 18, 2026 20:58	4,264	61,433,990	34,384,000	1,011,000	2,498,560
30	Mar 18, 2026 21:05	4,267	64,494,247	34,404,000	1,011,000	2,273,280
31	Mar 18, 2026 21:00	4,269	54,831,508	34,422,000	1,012,000	2,486,272
32	Mar 29, 2026 19:15	4,271	58,089,674	34,436,000	1,012,000	2,277,376
33	Mar 18, 2026 21:02	4,272	56,815,379	34,447,000	1,013,000	2,498,560
34	Mar 18, 2026 21:26	4,273	58,983,960	34,450,000	1,013,000	2,273,280
35	Mar 29, 2026 19:06	4,274	59,325,873	34,463,000	1,013,000	2,277,376
36	Mar 31, 2026 19:13	4,278	60,179,649	34,495,000	1,014,000	2,277,376
37	Mar 22, 2026 19:53	4,279	52,749,738	34,502,000	1,014,000	2,277,376
38	Mar 27, 2026 17:44	4,279	54,007,197	34,500,000	1,014,000	2,273,280
39	Mar 18, 2026 21:26	4,280	58,040,046	34,508,000	1,014,000	2,490,368
40	Mar 22, 2026 19:54	4,280	54,536,720	34,509,000	1,014,000	2,527,232
41	Mar 31, 2026 19:13	4,280	63,046,534	34,512,000	1,015,000	2,490,368
42	Mar 22, 2026 19:51	4,282	62,667,054	34,525,000	1,015,000	2,277,376
43	Mar 22, 2026 19:51	4,285	60,125,297	34,553,000	1,016,000	2,490,368
44	Mar 18, 2026 20:58	4,287	63,196,021	34,567,000	1,016,000	2,273,280
45	Mar 22, 2026 19:53	4,287	66,132,807	34,565,000	1,016,000	2,277,376
46	Mar 18, 2026 21:00	4,287	67,451,757	34,567,000	1,016,000	2,273,280
47	Mar 27, 2026 17:44	4,288	59,368,700	34,576,000	1,016,000	2,277,376
48	Mar 29, 2026 19:15	4,289	56,754,072	34,584,000	1,017,000	2,535,424
49	Mar 20, 2026 20:42	4,291	61,973,862	34,600,000	1,017,000	2,498,560
50	Mar 29, 2026 19:06	4,293	66,700,645	34,612,000	1,018,000	2,494,464
51	Mar 18, 2026 21:00	4,293	62,518,433	33,655,000	1,979,000	2,273,280
52	Mar 18, 2026 21:02	4,295	62,945,239	34,629,000	1,018,000	2,490,368
53	Mar 18, 2026 20:58	4,295	66,629,581	34,632,000	1,018,000	2,273,280
54	Mar 22, 2026 19:51	4,296	60,277,189	34,642,000	1,018,000	2,277,376
55	Mar 29, 2026 19:15	4,317	59,896,454	33,843,000	1,990,000	2,277,376
56	Mar 31, 2026 19:13	4,318	62,892,737	33,851,000	1,991,000	2,490,368
57	Mar 22, 2026 19:53	4,319	63,704,215	33,855,000	1,991,000	2,277,376
58	Mar 29, 2026 19:06	4,446	62,234,290	34,911,000	1,994,000	2,277,376
59	Mar 20, 2026 20:42	4,785	67,303,042	36,813,000	2,906,000	2,269,184
60	Mar 22, 2026 19:54	4,847	63,266,420	38,223,000	2,011,000	2,277,376

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