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 listJan 2, 2026 18:53

Josu San Martin

Score: 5,712

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 2, 2026 19:04	5,444	71,291,048	44,184,000	1,004,000	2,289,664
2	Jan 2, 2026 18:53	5,479	72,666,669	44,463,000	1,010,000	2,285,568
3	Jan 2, 2026 18:53	5,480	66,950,740	44,477,000	1,010,000	2,285,568
4	Jan 2, 2026 19:04	5,492	70,441,124	44,572,000	1,013,000	2,293,760
5	Jan 2, 2026 18:36	5,519	72,003,420	43,816,000	1,991,000	2,293,760
6	Jan 2, 2026 19:04	5,519	78,006,651	43,820,000	1,991,000	2,293,760
7	Jan 2, 2026 19:04	5,520	72,734,942	45,817,000	0	2,367,488
8	Jan 2, 2026 18:53	5,521	69,298,063	44,830,000	996,000	2,293,760
9	Jan 2, 2026 18:36	5,523	70,232,844	45,837,000	0	2,506,752
10	Jan 2, 2026 19:04	5,537	77,462,840	44,957,000	999,000	2,289,664
11	Jan 2, 2026 18:36	5,538	70,895,621	43,968,000	1,998,000	2,293,760
12	Jan 2, 2026 18:53	5,551	76,999,204	44,069,000	2,003,000	2,293,760
13	Jan 2, 2026 18:53	5,585	66,887,452	45,347,000	1,007,000	2,523,136
14	Jan 2, 2026 18:36	5,603	70,946,198	46,505,000	0	2,289,664
15	Jan 2, 2026 18:36	5,642	72,596,792	44,835,000	1,992,000	2,367,488
16	Jan 2, 2026 19:04	5,679	79,616,125	47,137,000	0	2,367,488
17	Jan 2, 2026 18:36	5,685	76,155,834	46,184,000	1,004,000	2,523,136
18	Jan 2, 2026 18:53	5,689	72,874,393	46,214,000	1,004,000	2,363,392
19	Jan 2, 2026 18:53	5,712	69,197,362	47,411,000	0	2,371,584
20	Jan 2, 2026 19:04	5,716	72,337,359	46,432,000	1,009,000	2,510,848
21	Jan 2, 2026 18:53	5,727	70,147,111	47,537,000	0	2,289,664
22	Jan 2, 2026 19:04	5,727	73,781,250	47,531,000	0	2,359,296
23	Jan 2, 2026 18:53	5,732	71,386,024	47,572,000	0	2,293,760
24	Jan 2, 2026 18:36	5,733	82,303,707	46,575,000	1,012,000	2,359,296
25	Jan 2, 2026 18:53	5,733	73,963,465	47,585,000	0	2,289,664
26	Jan 2, 2026 18:36	5,736	75,844,024	47,606,000	0	2,293,760
27	Jan 2, 2026 18:36	5,759	81,553,529	46,805,000	995,000	2,367,488
28	Jan 2, 2026 18:36	5,761	72,508,241	46,824,000	996,000	2,293,760
29	Jan 2, 2026 19:04	5,762	74,969,724	45,835,000	1,992,000	2,293,760
30	Jan 2, 2026 18:36	5,766	77,323,983	44,868,000	2,991,000	2,367,488
31	Jan 2, 2026 18:53	5,773	75,256,504	45,916,000	1,996,000	2,355,200
32	Jan 2, 2026 18:53	5,789	78,004,095	46,046,000	2,002,000	2,359,296
33	Jan 2, 2026 19:04	5,807	71,754,494	47,196,000	1,004,000	2,285,568
34	Jan 2, 2026 19:04	5,832	71,877,351	47,399,000	1,008,000	2,293,760
35	Jan 2, 2026 18:36	5,937	74,147,128	47,264,000	2,011,000	2,293,760
36	Jan 2, 2026 19:04	6,125	75,376,659	49,839,000	996,000	2,359,296

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