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 4, 2026 15:49

caando

Score: 5,194

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	Mar 4, 2026 15:55	5,182	65,008,363	42,012,000	1,000,000	2,269,184
2	Mar 4, 2026 16:14	5,187	64,655,903	41,048,000	2,002,000	2,523,136
3	Mar 4, 2026 15:49	5,188	69,349,357	41,058,000	2,002,000	2,285,568
4	Mar 4, 2026 15:49	5,189	70,433,372	41,068,000	2,003,000	2,277,376
5	Mar 4, 2026 16:09	5,189	66,614,778	41,066,000	2,003,000	2,527,232
6	Mar 4, 2026 16:09	5,189	69,487,545	41,062,000	2,003,000	2,285,568
7	Mar 4, 2026 15:55	5,189	65,844,457	41,069,000	2,003,000	2,523,136
8	Mar 4, 2026 15:49	5,190	66,428,958	41,075,000	2,003,000	2,383,872
9	Mar 4, 2026 16:14	5,190	67,517,186	41,074,000	2,003,000	2,285,568
10	Mar 4, 2026 15:55	5,190	73,513,248	41,076,000	2,003,000	2,285,568
11	Mar 4, 2026 15:49	5,190	66,832,904	41,077,000	2,003,000	2,527,232
12	Mar 4, 2026 15:49	5,190	65,088,553	42,073,000	1,001,000	2,527,232
13	Mar 4, 2026 15:49	5,191	69,580,511	41,081,000	2,003,000	2,285,568
14	Mar 4, 2026 15:49	5,192	76,316,511	42,095,000	1,002,000	2,523,136
15	Mar 4, 2026 15:49	5,192	66,462,106	41,092,000	2,004,000	2,285,568
16	Mar 4, 2026 16:14	5,194	69,603,828	42,112,000	1,002,000	2,285,568
17	Mar 4, 2026 15:49	5,196	66,976,039	41,118,000	2,005,000	2,285,568
18	Mar 4, 2026 16:09	5,199	69,723,083	41,146,000	2,007,000	2,527,232
19	Mar 4, 2026 16:14	5,282	69,888,533	42,841,000	996,000	2,285,568
20	Mar 4, 2026 15:55	5,283	70,144,951	41,855,000	1,993,000	2,285,568
21	Mar 4, 2026 15:55	5,284	64,472,756	41,868,000	1,993,000	2,519,040
22	Mar 4, 2026 16:14	5,285	66,620,520	41,871,000	1,993,000	2,285,568
23	Mar 4, 2026 16:09	5,285	68,799,718	41,875,000	1,994,000	2,285,568
24	Mar 4, 2026 15:55	5,290	66,626,426	41,910,000	1,995,000	2,265,088
25	Mar 4, 2026 15:49	5,291	66,632,718	41,917,000	1,996,000	2,285,568
26	Mar 4, 2026 16:14	5,295	69,115,722	41,951,000	1,997,000	2,285,568
27	Mar 4, 2026 16:09	5,295	67,814,620	41,951,000	1,997,000	2,523,136
28	Mar 4, 2026 16:09	5,300	71,262,642	41,995,000	1,999,000	2,285,568
29	Mar 4, 2026 15:49	5,300	71,882,951	41,987,000	1,999,000	2,265,088
30	Mar 4, 2026 15:49	5,309	70,346,753	42,065,000	2,003,000	2,265,088

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