Parse JSON

Compute the total amount of non-canceled external USD transactions from a stream of JSON records as fast as possible.

Input: 1 000 000 JSON records on STDIN, one per line. Each record has the following structure:

{
    "user_id": 0,
    "currency": "USD",
    "transactions": [
        {
            "amount": 0,
            "to_user_id": 0,
            "canceled": false
        }
    ]
}

Field	Constraints
`user_id`	Integer, max 10 000
`currency`	One of `"GBP"`, `"USD"`, `"RUB"`, `"JPY"`, `"CHF"`
`transactions`	Array, max 10 elements
`amount`	Integer, max 1000
`canceled`	Boolean; may be omitted when `false`

Field order is not guaranteed within any object.

Output: The total amount of all transactions where:

record.currency == "USD"
transaction.to_user_id != record.user_id (external)
transaction.canceled is false or absent

Restrictions:60s512Mb 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 listMay 11, 2021 05:59

Sergey Stremin

Score: 9,497

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	May 11, 2021 05:58	9,458	125,239,793	85,031,000	19,007,000	2,469,888
2	May 11, 2021 05:59	9,459	129,246,642	71,035,000	33,016,000	2,379,776
3	May 11, 2021 05:59	9,467	127,749,905	71,092,000	33,043,000	2,289,664
4	May 11, 2021 05:59	9,468	126,223,619	70,100,000	34,048,000	2,281,472
5	May 11, 2021 05:59	9,474	126,402,868	77,158,000	27,055,000	2,379,776
6	May 11, 2021 05:59	9,481	137,335,361	78,215,000	26,071,000	2,289,664
7	May 11, 2021 05:59	9,483	126,774,522	75,223,000	29,086,000	2,375,680
8	May 11, 2021 05:58	9,483	126,867,202	76,227,000	28,083,000	2,289,664
9	May 11, 2021 05:59	9,487	127,965,650	80,273,000	24,082,000	2,289,664
10	May 11, 2021 05:58	9,494	127,728,862	73,305,000	31,129,000	2,289,664
11	May 11, 2021 05:59	9,495	126,552,300	83,357,000	21,090,000	2,289,664
12	May 11, 2021 05:59	9,496	127,329,155	79,350,000	25,110,000	2,482,176
13	May 11, 2021 05:59	9,496	130,010,306	75,330,000	29,127,000	2,281,472
14	May 11, 2021 05:58	9,497	128,266,865	65,290,000	39,174,000	2,289,664
15	May 11, 2021 05:59	9,498	126,971,522	78,355,000	26,118,000	2,289,664
16	May 11, 2021 05:58	9,499	128,070,193	75,350,000	29,135,000	2,383,872
17	May 11, 2021 05:58	9,504	125,871,048	70,363,000	34,176,000	2,383,872
18	May 11, 2021 05:58	9,513	132,335,758	79,488,000	25,154,000	2,367,488
19	May 11, 2021 05:59	9,515	135,153,773	67,428,000	37,236,000	2,289,664
20	May 11, 2021 05:59	9,526	130,542,273	78,841,000	25,947,000	2,289,664
21	May 11, 2021 05:59	9,529	136,558,801	79,866,000	24,958,000	2,375,680
22	May 11, 2021 05:59	9,529	129,878,138	69,881,000	34,940,000	2,379,776
23	May 11, 2021 05:58	9,530	131,361,514	69,887,000	34,943,000	2,289,664
24	May 11, 2021 05:59	9,535	134,210,247	75,921,000	28,969,000	2,375,680
25	May 11, 2021 05:59	9,551	130,479,629	76,043,000	29,016,000	2,379,776
26	May 11, 2021 05:59	9,553	128,594,744	77,062,000	28,022,000	2,363,392
27	May 11, 2021 05:58	9,617	131,725,476	67,866,000	37,925,000	2,289,664

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