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 listFeb 11, 2026 19:33

olliecrowScore: 20,964Success

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 11, 2026 19:51	20,862	712,308,202	664,458,000	23,980,000	2,453,504
2	Feb 11, 2026 19:54	20,866	717,287,860	663,581,000	24,984,000	2,277,376
3	Feb 11, 2026 19:28	20,869	708,376,521	663,681,000	24,988,000	2,318,336
4	Feb 11, 2026 19:49	20,876	714,658,058	663,898,000	24,996,000	2,453,504
5	Feb 11, 2026 19:51	20,886	717,756,590	664,254,000	24,971,000	2,318,336
6	Feb 11, 2026 20:05	20,889	717,195,809	664,364,000	24,976,000	2,265,088
7	Feb 11, 2026 20:06	20,894	719,133,939	664,528,000	24,982,000	2,338,816
8	Feb 11, 2026 20:06	20,898	713,102,165	664,655,000	24,987,000	2,330,624
9	Feb 11, 2026 20:06	20,909	712,838,144	665,997,000	23,999,000	2,293,760
10	Feb 11, 2026 19:56	20,915	715,764,799	665,196,000	25,007,000	2,510,848
11	Feb 11, 2026 19:51	20,919	718,767,152	667,362,000	22,978,000	2,375,680
12	Feb 11, 2026 19:57	20,920	717,291,758	666,373,000	23,977,000	2,396,160
13	Feb 11, 2026 19:51	20,921	720,741,102	664,409,000	25,976,000	2,379,776
14	Feb 11, 2026 19:33	20,922	718,426,724	664,456,000	25,978,000	2,387,968
15	Feb 11, 2026 19:51	20,925	713,760,444	664,540,000	25,982,000	2,453,504
16	Feb 11, 2026 19:51	20,926	714,614,869	663,560,000	26,982,000	2,457,600
17	Feb 11, 2026 19:51	20,927	713,739,088	664,596,000	25,984,000	2,277,376
18	Feb 11, 2026 19:57	20,928	714,123,521	665,636,000	24,986,000	2,473,984
19	Feb 11, 2026 20:06	20,947	718,579,436	667,256,000	24,009,000	2,465,792
20	Feb 11, 2026 19:49	20,950	718,653,254	668,370,000	22,978,000	2,301,952
21	Feb 11, 2026 20:06	20,951	719,046,235	665,417,000	25,977,000	2,322,432
22	Feb 11, 2026 20:05	20,954	716,536,963	663,502,000	27,979,000	2,293,760
23	Feb 11, 2026 19:51	20,964	718,324,021	667,816,000	23,993,000	2,449,408
24	Feb 11, 2026 19:54	20,968	715,245,513	666,932,000	24,997,000	2,478,080
25	Feb 11, 2026 19:54	20,971	718,387,818	667,030,000	25,001,000	2,285,568
26	Feb 11, 2026 20:05	20,980	719,038,418	667,363,000	24,976,000	2,277,376
27	Feb 11, 2026 20:05	20,988	718,588,772	666,625,000	25,985,000	2,457,600
28	Feb 11, 2026 20:05	20,989	716,993,568	666,646,000	25,986,000	2,437,120
29	Feb 11, 2026 19:28	20,994	716,421,150	667,807,000	24,992,000	2,400,256
30	Feb 11, 2026 20:05	21,001	720,066,626	668,039,000	25,001,000	2,461,696
31	Feb 11, 2026 19:51	21,007	721,319,365	669,273,000	23,973,000	2,310,144
32	Feb 11, 2026 20:05	21,009	723,649,621	669,312,000	23,975,000	2,424,832
33	Feb 11, 2026 19:51	21,015	715,725,207	667,500,000	25,980,000	2,351,104
34	Feb 11, 2026 19:49	21,019	719,870,062	667,643,000	25,986,000	2,412,544
35	Feb 11, 2026 20:06	21,021	718,237,972	668,690,000	24,988,000	2,461,696
36	Feb 11, 2026 19:51	21,032	724,439,584	669,068,000	25,002,000	2,453,504
37	Feb 11, 2026 19:28	21,038	720,772,998	668,288,000	25,972,000	2,318,336
38	Feb 11, 2026 19:56	21,051	715,472,506	670,706,000	23,989,000	2,461,696
39	Feb 11, 2026 20:05	21,063	719,648,602	670,073,000	25,002,000	2,457,600
40	Feb 11, 2026 19:56	21,064	720,502,508	669,098,000	26,003,000	2,519,040
41	Feb 11, 2026 19:51	21,125	724,999,695	672,118,000	25,004,000	2,355,200
42	Feb 11, 2026 19:33	21,126	720,084,643	670,186,000	26,967,000	2,453,504
43	Feb 11, 2026 20:05	21,130	725,037,659	670,309,000	26,972,000	2,277,376
44	Feb 11, 2026 19:33	21,164	732,751,907	671,439,000	26,977,000	2,457,600
45	Feb 11, 2026 19:57	21,167	722,981,092	672,529,000	25,981,000	2,453,504

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