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 listFeb 18, 2026 19:03

Mikołaj Uzarski

Score: 5,781

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	Feb 18, 2026 19:30	5,685	73,189,176	40,160,000	7,028,000	2,281,472
2	Feb 18, 2026 19:26	5,698	70,640,641	42,265,000	5,031,000	2,457,600
3	Feb 18, 2026 19:10	5,721	71,351,204	43,447,000	4,041,000	2,502,656
4	Feb 18, 2026 19:26	5,737	74,098,969	41,542,000	6,079,000	2,285,568
5	Feb 19, 2026 22:48	5,743	74,401,440	43,612,000	4,056,000	2,506,752
6	Feb 18, 2026 19:03	5,759	76,920,572	42,717,000	5,085,000	2,265,088
7	Feb 18, 2026 19:10	5,759	75,528,948	43,818,000	3,983,000	2,387,968
8	Feb 18, 2026 19:30	5,760	76,015,065	40,835,000	6,971,000	2,445,312
9	Feb 18, 2026 19:10	5,761	73,914,035	40,841,000	6,972,000	2,465,792
10	Feb 18, 2026 19:30	5,762	74,182,050	43,753,000	4,070,000	2,326,528
11	Feb 18, 2026 19:03	5,772	71,705,961	42,918,000	4,990,000	2,437,120
12	Feb 18, 2026 19:10	5,773	73,494,161	40,930,000	6,988,000	2,461,696
13	Feb 18, 2026 19:10	5,774	72,689,743	41,935,000	5,990,000	2,351,104
14	Feb 19, 2026 22:42	5,780	79,492,153	41,974,000	5,996,000	2,318,336
15	Feb 18, 2026 19:26	5,781	73,102,228	41,982,000	5,997,000	2,338,816
16	Feb 18, 2026 19:10	5,781	74,169,925	41,988,000	5,998,000	2,387,968
17	Feb 19, 2026 22:53	5,781	73,769,607	41,982,000	5,997,000	2,379,776
18	Feb 18, 2026 19:30	5,799	76,733,964	41,113,000	7,019,000	2,281,472
19	Feb 19, 2026 22:42	5,804	72,254,729	42,154,000	6,022,000	2,453,504
20	Feb 18, 2026 19:03	5,805	70,955,076	41,152,000	7,026,000	2,494,464
21	Feb 18, 2026 19:30	5,806	71,055,182	45,176,000	3,011,000	2,310,144
22	Feb 19, 2026 22:42	5,813	73,961,283	44,226,000	4,020,000	2,523,136
23	Feb 19, 2026 22:48	5,819	71,283,177	42,264,000	6,037,000	2,326,528
24	Feb 18, 2026 19:30	5,821	71,135,453	41,272,000	7,046,000	2,359,296
25	Feb 19, 2026 22:48	5,852	78,309,258	45,538,000	3,035,000	2,392,064
26	Feb 18, 2026 19:30	5,857	75,442,337	41,522,000	7,089,000	2,392,064
27	Feb 19, 2026 22:53	5,862	76,079,720	43,588,000	5,068,000	2,461,696
28	Feb 19, 2026 22:53	5,863	78,292,116	45,620,000	3,041,000	2,306,048
29	Feb 18, 2026 19:10	5,883	70,618,708	42,854,000	5,979,000	2,437,120
30	Feb 18, 2026 19:10	5,888	75,636,121	42,884,000	5,983,000	2,465,792
31	Feb 18, 2026 19:10	5,897	80,805,665	40,956,000	7,991,000	2,473,984
32	Feb 18, 2026 19:30	5,911	72,687,507	43,056,000	6,007,000	2,465,792
33	Feb 18, 2026 19:30	5,979	75,725,479	44,562,000	5,063,000	2,396,160

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