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 listMar 22, 2026 13:23

olliecrowScore: 53,942Success

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 22, 2026 13:23	53,141	1,782,797,868	1,726,681,000	26,979,000	2,379,776
2	Mar 22, 2026 13:23	53,181	1,784,593,195	1,730,988,000	23,985,000	2,420,736
3	Mar 22, 2026 13:23	53,608	1,797,828,487	1,739,115,000	29,950,000	2,310,144
4	Mar 22, 2026 13:23	53,724	1,800,441,442	1,747,917,000	24,984,000	2,367,488
5	Mar 22, 2026 13:23	53,768	1,804,208,755	1,751,347,000	22,991,000	2,543,616
6	Mar 22, 2026 13:24	53,772	1,805,766,629	1,752,503,000	21,968,000	2,473,984
7	Mar 22, 2026 13:23	53,801	1,808,113,804	1,746,443,000	28,974,000	2,363,392
8	Mar 22, 2026 13:23	53,846	1,810,936,925	1,752,931,000	23,985,000	2,428,928
9	Mar 22, 2026 13:23	53,855	1,806,331,895	1,750,219,000	26,987,000	2,519,040
10	Mar 22, 2026 13:23	53,857	1,805,235,537	1,751,283,000	25,989,000	2,330,624
11	Mar 22, 2026 13:24	53,864	1,804,418,485	1,751,531,000	25,978,000	2,416,640
12	Mar 22, 2026 13:23	53,867	1,806,686,129	1,753,633,000	23,981,000	2,379,776
13	Mar 22, 2026 13:24	53,885	1,805,632,479	1,754,227,000	23,975,000	2,355,200
14	Mar 22, 2026 13:23	53,895	1,810,351,206	1,750,566,000	27,977,000	2,424,832
15	Mar 22, 2026 13:23	53,932	1,814,262,320	1,758,758,000	20,985,000	2,318,336
16	Mar 22, 2026 13:23	53,942	1,813,974,812	1,757,090,000	22,988,000	2,502,656
17	Mar 22, 2026 13:23	53,956	1,809,885,154	1,755,581,000	24,979,000	2,424,832
18	Mar 22, 2026 13:23	53,990	1,815,057,577	1,758,690,000	22,982,000	2,371,584
19	Mar 22, 2026 13:23	53,992	1,813,820,005	1,757,762,000	23,983,000	2,473,984
20	Mar 22, 2026 13:24	54,021	1,813,811,036	1,755,714,000	26,980,000	2,420,736
21	Mar 22, 2026 13:24	54,206	1,823,863,685	1,764,815,000	23,983,000	2,551,808
22	Mar 22, 2026 13:23	54,211	1,816,090,088	1,759,979,000	28,983,000	2,363,392
23	Mar 22, 2026 13:23	54,230	1,824,610,343	1,767,605,000	21,982,000	2,424,832
24	Mar 22, 2026 13:23	54,250	1,819,000,548	1,768,271,000	21,990,000	2,531,328
25	Mar 22, 2026 13:23	54,268	1,824,211,921	1,767,853,000	22,985,000	2,428,928
26	Mar 22, 2026 13:23	54,310	1,824,095,285	1,771,232,000	20,990,000	2,555,904
27	Mar 22, 2026 13:23	54,338	1,822,592,664	1,764,173,000	28,986,000	2,416,640
28	Mar 22, 2026 13:23	54,385	1,827,484,117	1,772,714,000	21,984,000	2,355,200
29	Mar 22, 2026 13:23	54,874	1,839,604,375	1,780,894,000	29,964,000	2,314,240
30	Mar 22, 2026 13:24	55,627	1,868,978,043	1,811,714,000	23,982,000	2,531,328

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