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.

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 6, 2026 22:57	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 6, 2026 22:57	0	41,036,386	31,978,000	1,162,000	2,113,536	expected "74600294196621100 ", got "73533894320416300 "
2	Jul 6, 2026 22:57	0	41,264,342	32,139,000	1,009,000	2,113,536	expected "74600294196621100 ", got "73525118832329260 "
3	Jul 6, 2026 22:57	0	43,582,259	34,321,000	1,155,000	2,113,536	expected "74600294196621100 ", got "73598595921482540 "
4	Mar 17, 2026 19:01	4,234	54,424,770	33,136,000	2,008,000	2,273,280
5	Mar 17, 2026 19:29	4,235	59,661,214	33,139,000	2,008,000	2,490,368
6	Mar 17, 2026 19:29	4,238	55,931,862	34,173,000	1,005,000	2,273,280
7	Mar 17, 2026 19:42	4,241	62,658,330	33,193,000	2,011,000	2,498,560
8	Mar 17, 2026 19:40	4,241	60,087,789	33,192,000	2,011,000	2,498,560
9	Mar 17, 2026 19:01	4,245	64,351,596	34,229,000	1,006,000	2,486,272
10	Mar 18, 2026 13:11	4,250	59,542,862	34,265,000	1,007,000	2,273,280
11	Mar 18, 2026 09:54	4,250	56,492,445	34,268,000	1,007,000	2,494,464
12	Mar 17, 2026 19:40	4,251	59,751,427	34,278,000	1,008,000	2,531,328
13	Mar 18, 2026 09:54	4,253	61,569,089	34,288,000	1,008,000	2,273,280
14	Mar 17, 2026 19:01	4,254	60,513,808	34,297,000	1,008,000	2,273,280
15	Mar 18, 2026 13:11	4,256	58,250,556	34,318,000	1,009,000	2,494,464
16	Mar 17, 2026 19:40	4,258	60,316,789	34,329,000	1,009,000	2,494,464
17	Mar 17, 2026 19:40	4,260	61,267,755	34,349,000	1,010,000	2,273,280
18	Mar 17, 2026 19:42	4,262	54,688,334	34,368,000	1,010,000	2,527,232
19	Mar 17, 2026 19:01	4,264	57,460,478	34,379,000	1,011,000	2,498,560
20	Mar 18, 2026 09:54	4,265	55,525,641	34,389,000	1,011,000	2,494,464
21	Mar 17, 2026 19:29	4,268	56,315,163	34,409,000	1,012,000	2,527,232
22	Mar 17, 2026 19:03	4,272	60,346,034	34,446,000	1,013,000	2,273,280
23	Mar 17, 2026 19:01	4,272	54,090,964	34,445,000	1,013,000	2,273,280
24	Mar 18, 2026 09:54	4,274	54,833,158	34,461,000	1,013,000	2,269,184
25	Mar 17, 2026 19:03	4,282	58,401,460	34,527,000	1,015,000	2,273,280
26	Mar 17, 2026 19:42	4,282	55,841,803	34,525,000	1,015,000	2,273,280
27	Mar 18, 2026 09:54	4,283	60,689,019	34,530,000	1,015,000	2,498,560
28	Mar 18, 2026 13:11	4,285	60,451,679	34,547,000	1,016,000	2,273,280
29	Mar 18, 2026 13:11	4,286	62,987,299	34,557,000	1,016,000	2,273,280
30	Mar 17, 2026 19:03	4,286	55,582,944	34,555,000	1,016,000	2,486,272
31	Mar 17, 2026 19:03	4,293	66,661,820	34,612,000	1,018,000	2,273,280
32	Mar 17, 2026 19:03	4,295	63,411,598	34,628,000	1,018,000	2,531,328
33	Mar 17, 2026 19:03	4,295	59,613,436	34,629,000	1,018,000	2,273,280
34	Mar 17, 2026 19:40	4,296	61,141,214	34,635,000	1,018,000	2,502,656
35	Mar 17, 2026 19:40	4,296	59,240,598	34,640,000	1,018,000	2,482,176
36	Mar 18, 2026 09:54	4,299	68,506,023	34,666,000	1,019,000	2,494,464
37	Mar 18, 2026 13:11	4,315	62,970,342	33,822,000	1,989,000	2,273,280
38	Mar 17, 2026 19:01	4,320	60,511,700	33,868,000	1,992,000	2,490,368
39	Mar 18, 2026 13:11	4,335	61,832,093	33,984,000	1,999,000	2,273,280

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