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.

Back to listFeb 24, 2026 21:33

Mikołaj Uzarski

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 7, 2026 03:59	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 7, 2026 04:00	0	51,105,949	40,150,000	1,289,000	2,113,536	expected "74600294196621100 ", got "74600677229288443 "
2	Jul 7, 2026 04:00	4,972	50,872,037	40,059,000	1,211,000	2,113,536
3	Jul 7, 2026 04:00	5,005	51,218,316	40,530,000	1,019,000	2,113,536
4	Feb 24, 2026 21:35	5,103	70,022,472	40,340,000	2,017,000	2,281,472
5	Feb 24, 2026 21:33	5,107	67,816,535	41,377,000	1,009,000	2,277,376
6	Feb 24, 2026 21:36	5,107	64,672,594	40,371,000	2,018,000	2,285,568
7	Feb 24, 2026 21:34	5,110	66,787,293	41,400,000	1,009,000	2,510,848
8	Feb 24, 2026 21:34	5,110	73,127,982	40,398,000	2,019,000	2,506,752
9	Feb 24, 2026 21:36	5,110	67,548,344	40,398,000	2,019,000	2,277,376
10	Feb 24, 2026 21:34	5,110	70,666,271	40,392,000	2,019,000	2,502,656
11	Feb 24, 2026 21:34	5,110	66,753,592	40,394,000	2,019,000	2,285,568
12	Feb 24, 2026 21:34	5,111	68,746,804	40,405,000	2,020,000	2,510,848
13	Mar 12, 2026 19:52	5,112	67,520,278	42,426,000	0	2,285,568
14	Feb 24, 2026 21:35	5,112	72,769,327	42,431,000	0	2,502,656
15	Feb 24, 2026 21:35	5,112	67,089,841	40,411,000	2,020,000	2,510,848
16	Mar 12, 2026 19:52	5,113	65,490,798	39,405,000	3,031,000	2,502,656
17	Feb 24, 2026 21:35	5,113	65,356,801	41,427,000	1,010,000	2,510,848
18	Feb 24, 2026 21:34	5,114	68,332,178	42,448,000	0	2,510,848
19	Feb 24, 2026 21:34	5,115	64,881,287	41,441,000	1,010,000	2,285,568
20	Feb 24, 2026 21:34	5,116	64,400,381	41,449,000	1,010,000	2,510,848
21	Feb 24, 2026 21:35	5,116	65,090,053	40,440,000	2,022,000	2,281,472
22	Feb 24, 2026 21:36	5,117	65,010,577	42,467,000	0	2,514,944
23	Feb 24, 2026 21:33	5,117	65,148,619	41,464,000	1,011,000	2,285,568
24	Feb 24, 2026 21:36	5,119	65,167,556	40,463,000	2,023,000	2,523,136
25	Feb 24, 2026 21:35	5,120	71,296,341	41,487,000	1,011,000	2,289,664
26	Feb 24, 2026 21:35	5,120	64,942,173	41,481,000	1,011,000	2,285,568
27	Feb 24, 2026 21:33	5,123	65,834,512	41,509,000	1,012,000	2,281,472
28	Feb 24, 2026 21:35	5,123	69,410,345	41,505,000	1,012,000	2,281,472
29	Feb 24, 2026 21:35	5,124	68,223,459	41,514,000	1,012,000	2,498,560
30	Feb 24, 2026 21:33	5,128	73,560,700	41,549,000	1,013,000	2,506,752
31	Feb 24, 2026 21:36	5,129	68,328,011	41,559,000	1,013,000	2,285,568
32	Feb 24, 2026 21:35	5,130	74,595,952	42,581,000	0	2,289,664
33	Feb 24, 2026 21:34	5,130	69,588,469	41,568,000	1,013,000	2,506,752
34	Feb 24, 2026 21:35	5,135	74,201,192	41,608,000	1,014,000	2,285,568
35	Feb 24, 2026 21:35	5,137	71,107,260	41,623,000	1,015,000	2,285,568
36	Feb 24, 2026 21:35	5,137	72,978,946	41,618,000	1,015,000	2,281,472
37	Feb 24, 2026 21:35	5,140	67,713,635	42,660,000	0	2,502,656
38	Feb 24, 2026 21:34	5,141	74,435,060	41,653,000	1,015,000	2,285,568
39	Feb 24, 2026 21:36	5,156	68,089,018	40,803,000	1,990,000	2,285,568
40	Feb 24, 2026 21:33	5,156	74,217,346	40,807,000	1,990,000	2,285,568
41	Feb 24, 2026 21:34	5,158	74,144,496	40,824,000	1,991,000	2,285,568
42	Feb 24, 2026 21:34	5,159	69,021,501	40,825,000	1,991,000	2,281,472
43	Feb 24, 2026 21:35	5,191	78,733,361	40,082,000	3,006,000	2,506,752
44	Mar 12, 2026 19:52	5,212	67,706,585	41,247,000	2,012,000	2,506,752
45	Feb 24, 2026 21:33	5,684	70,813,726	44,169,000	3,011,000	2,506,752

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