Unique strings

Count the exact number of unique tokens as fast as possible.

Input

One token per line on STDIN:

JWXcKKaWzvFL5
Rof
3ztCpA
5wHcGN
*UiEMthaTS*g

Output

Print the exact count of unique tokens to STDOUT.

Constraints

Character set: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@#%*
Maximum token length: 16
Approximately 1,000,000 unique tokens

Restrictions:20s512Mb 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 listDec 24, 2025 00:47

zielajScore: 4,007Success

Source Code

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 24, 2025 00:47	3,963	151,761,802	118,811,000	11,981,000	2,387,968
2	Dec 24, 2025 00:58	3,964	155,534,299	118,817,000	11,981,000	2,396,160
3	Dec 24, 2025 00:48	3,965	156,483,863	118,867,000	11,986,000	2,490,368
4	Dec 24, 2025 00:54	3,965	152,406,095	119,849,000	10,986,000	2,387,968
5	Dec 24, 2025 00:48	3,970	156,314,771	122,008,000	9,000,000	2,371,584
6	Dec 24, 2025 00:58	3,972	154,304,836	124,086,000	7,004,000	2,453,504
7	Dec 24, 2025 00:58	3,972	154,458,868	122,067,000	9,004,000	2,400,256
8	Dec 24, 2025 00:52	3,972	153,268,297	122,069,000	9,005,000	2,392,064
9	Dec 24, 2025 00:48	3,976	152,028,578	120,196,000	11,018,000	2,383,872
10	Dec 24, 2025 00:52	3,981	151,165,232	122,355,000	9,026,000	2,387,968
11	Dec 24, 2025 00:52	3,982	150,422,995	119,376,000	12,037,000	2,404,352
12	Dec 24, 2025 00:48	3,985	158,924,266	121,456,000	10,037,000	2,523,136
13	Dec 24, 2025 00:52	3,986	154,514,579	122,505,000	9,037,000	2,523,136
14	Dec 24, 2025 00:58	3,990	161,684,634	121,686,000	9,974,000	2,510,848
15	Dec 24, 2025 00:52	3,993	163,030,403	120,796,000	10,981,000	2,383,872
16	Dec 24, 2025 00:48	3,999	151,090,737	119,969,000	11,996,000	2,387,968
17	Dec 24, 2025 00:48	4,007	158,225,474	119,196,000	13,021,000	2,404,352
18	Dec 24, 2025 00:58	4,026	154,038,881	124,872,000	7,991,000	2,371,584
19	Dec 24, 2025 00:58	4,034	155,607,367	121,119,000	12,011,000	2,494,464
20	Dec 24, 2025 00:58	4,037	154,144,969	124,214,000	9,015,000	2,408,448
21	Dec 24, 2025 00:52	4,038	151,417,972	123,245,000	10,019,000	2,412,544
22	Dec 24, 2025 00:48	4,041	159,459,111	122,312,000	11,028,000	2,379,776
23	Dec 24, 2025 00:52	4,051	163,301,277	121,720,000	11,972,000	2,392,064
24	Dec 24, 2025 00:52	4,061	156,736,418	121,007,000	13,000,000	2,473,984
25	Dec 24, 2025 00:54	4,067	156,436,362	121,194,000	13,020,000	2,510,848
26	Dec 24, 2025 00:48	4,090	153,823,361	121,965,000	12,996,000	2,375,680
27	Dec 24, 2025 00:48	4,092	158,276,580	127,028,000	8,001,000	2,379,776
28	Dec 24, 2025 00:47	4,161	155,606,163	127,280,000	10,022,000	2,392,064
29	Dec 24, 2025 00:47	4,182	157,897,661	123,010,000	15,001,000	2,510,848
30	Dec 24, 2025 00:54	4,225	162,257,847	122,365,000	17,050,000	2,482,176
31	Dec 24, 2025 00:58	4,233	163,049,427	123,721,000	15,964,000	2,502,656
32	Dec 24, 2025 00:58	4,245	160,354,781	124,083,000	16,010,000	2,383,872
33	Dec 24, 2025 00:52	4,259	161,346,594	125,500,000	15,060,000	2,383,872

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