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.

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apuxbt

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Oct 1, 2023 13:05	0	0	0	0	0	Error: expected "1022251 ", got "1022252 "	stderr
2	Oct 1, 2023 13:05	17,493	612,109,749	560,265,000	17,008,000	2,498,560
3	Oct 1, 2023 13:01	17,498	602,436,296	559,439,000	17,981,000	2,441,216
4	Oct 1, 2023 13:05	17,576	607,855,875	563,038,000	16,971,000	2,314,240
5	Oct 1, 2023 13:01	17,594	606,602,418	561,602,000	18,986,000	2,310,144
6	Oct 1, 2023 13:05	17,640	607,765,787	567,118,000	15,003,000	2,301,952
7	Oct 1, 2023 13:00	17,652	612,836,839	569,514,000	12,988,000	2,490,368
8	Oct 1, 2023 13:01	17,654	610,453,957	568,594,000	13,990,000	2,265,088
9	Oct 1, 2023 13:05	17,699	614,755,307	568,091,000	15,974,000	2,510,848
10	Oct 1, 2023 13:05	17,704	651,941,551	584,236,624	0	2,240,512
11	Oct 1, 2023 13:01	17,736	613,890,986	568,282,000	17,008,000	2,326,528
12	Oct 1, 2023 13:01	17,743	656,371,993	585,532,523	0	2,224,128
13	Oct 1, 2023 13:01	17,746	610,769,443	569,641,000	15,989,000	2,310,144
14	Oct 1, 2023 13:00	17,749	648,337,594	585,718,204	0	2,236,416
15	Oct 1, 2023 13:00	17,755	613,571,072	570,928,000	14,998,000	2,269,184
16	Oct 1, 2023 13:00	17,765	616,210,740	569,242,000	17,007,000	2,502,656
17	Oct 1, 2023 13:05	17,765	612,295,322	569,238,000	17,007,000	2,367,488
18	Oct 1, 2023 13:05	17,793	613,996,059	571,153,000	16,004,000	2,318,336
19	Oct 1, 2023 13:00	17,796	616,073,214	571,261,000	16,007,000	2,383,872
20	Oct 1, 2023 13:01	17,796	656,270,954	587,272,929	0	2,232,320
21	Oct 1, 2023 13:01	17,816	662,901,369	587,930,538	0	2,232,320
22	Oct 1, 2023 13:01	17,831	614,707,557	574,426,000	13,986,000	2,363,392
23	Oct 1, 2023 13:00	17,839	613,030,412	576,697,000	11,993,000	2,486,272
24	Oct 1, 2023 13:05	17,854	657,175,053	589,175,362	0	2,260,992
25	Oct 1, 2023 13:00	17,870	614,692,388	573,719,000	15,992,000	2,314,240
26	Oct 1, 2023 13:00	17,873	651,666,914	589,808,723	0	2,240,512
27	Oct 1, 2023 13:00	17,875	613,070,052	573,886,000	15,996,000	2,465,792
28	Oct 1, 2023 13:01	17,881	618,492,550	580,085,000	10,001,000	2,318,336
29	Oct 1, 2023 13:00	17,884	653,487,806	590,187,497	0	2,232,320
30	Oct 1, 2023 13:00	17,892	615,461,401	569,462,000	20,980,000	2,392,064
31	Oct 1, 2023 13:05	17,912	664,579,224	591,091,534	0	2,236,416
32	Oct 1, 2023 13:01	17,933	619,672,532	575,791,000	15,994,000	2,322,432
33	Oct 1, 2023 13:00	17,934	623,170,268	576,820,000	14,995,000	2,322,432
34	Oct 1, 2023 13:05	17,981	618,859,073	578,390,000	14,984,000	2,408,448
35	Oct 1, 2023 13:05	17,994	621,019,105	576,817,000	16,994,000	2,318,336
36	Oct 1, 2023 13:01	18,024	623,403,982	578,786,000	15,994,000	2,486,272
37	Oct 1, 2023 13:05	18,045	620,245,614	581,491,000	13,987,000	2,502,656

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