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 listDec 6, 2025 16:15

Rajarshi Basu

Score: 5,937

Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 6, 2025 16:09	5,897	77,103,152	45,950,000	2,996,000	2,273,280
2	Dec 6, 2025 16:15	5,901	69,412,183	45,981,000	2,998,000	2,289,664
3	Dec 6, 2025 16:21	5,902	76,099,565	45,991,000	2,999,000	2,523,136
4	Dec 6, 2025 16:09	5,904	72,726,245	47,007,000	2,000,000	2,289,664
5	Dec 6, 2025 16:09	5,910	70,241,505	46,051,000	3,003,000	2,289,664
6	Dec 6, 2025 16:16	5,913	70,844,946	47,072,000	2,003,000	2,281,472
7	Dec 6, 2025 16:15	5,914	73,379,795	47,081,000	2,003,000	2,289,664
8	Dec 6, 2025 16:09	5,914	69,839,506	46,084,000	3,005,000	2,289,664
9	Dec 6, 2025 16:15	5,917	77,860,092	47,110,000	2,004,000	2,273,280
10	Dec 6, 2025 16:15	5,918	71,063,392	47,114,000	2,004,000	2,289,664
11	Dec 6, 2025 16:15	5,919	71,018,900	46,118,000	3,007,000	2,273,280
12	Dec 6, 2025 16:21	5,921	69,858,588	46,133,000	3,008,000	2,289,664
13	Dec 6, 2025 16:21	5,923	74,958,194	46,148,000	3,009,000	2,289,664
14	Dec 6, 2025 16:15	5,927	75,841,639	47,188,000	2,008,000	2,289,664
15	Dec 6, 2025 16:16	5,928	75,729,290	46,194,000	3,012,000	2,289,664
16	Dec 6, 2025 16:15	5,934	72,338,839	46,239,000	3,015,000	2,285,568
17	Dec 6, 2025 16:09	5,935	72,713,979	48,255,000	1,005,000	2,367,488
18	Dec 6, 2025 16:09	5,935	73,706,400	48,259,000	1,005,000	2,289,664
19	Dec 6, 2025 16:15	5,937	77,271,544	48,273,000	1,005,000	2,269,184
20	Dec 6, 2025 16:09	5,945	69,235,747	46,326,000	3,021,000	2,289,664
21	Dec 6, 2025 16:09	5,962	71,546,374	46,459,000	3,029,000	2,289,664
22	Dec 6, 2025 16:16	5,964	73,604,235	48,488,000	1,010,000	2,289,664
23	Dec 6, 2025 16:09	5,975	75,693,762	47,569,000	2,024,000	2,289,664
24	Dec 6, 2025 16:15	6,002	79,949,324	46,826,000	2,988,000	2,289,664
25	Dec 6, 2025 16:15	6,039	71,726,899	47,116,000	3,007,000	2,289,664
26	Dec 6, 2025 16:21	6,051	72,679,623	48,215,000	2,008,000	2,289,664
27	Dec 6, 2025 16:16	6,058	77,872,956	47,264,000	3,016,000	2,289,664
28	Dec 6, 2025 16:09	6,058	73,869,761	49,280,000	1,005,000	2,289,664
29	Dec 6, 2025 16:21	6,065	77,211,517	47,316,000	3,020,000	2,289,664
30	Dec 6, 2025 16:16	6,070	76,827,704	47,362,000	3,023,000	2,289,664
31	Dec 6, 2025 16:09	6,071	70,703,832	47,368,000	3,023,000	2,289,664
32	Dec 6, 2025 16:15	6,074	72,480,441	47,389,000	3,024,000	2,289,664
33	Dec 6, 2025 16:09	6,079	76,982,343	48,435,000	2,018,000	2,289,664
34	Dec 6, 2025 16:15	6,080	76,874,229	48,443,000	2,018,000	2,273,280
35	Dec 6, 2025 16:21	6,081	74,771,744	49,461,000	1,009,000	2,289,664
36	Dec 6, 2025 16:16	6,139	73,316,919	48,952,000	1,998,000	2,289,664

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