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 13:33

olliecrowScore: 54,055Success

Source Code

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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 13:32	53,568	1,801,869,595	1,743,770,000	23,983,000	2,473,984
2	Mar 22, 2026 13:33	53,684	1,797,322,664	1,748,577,000	22,981,000	2,498,560
3	Mar 22, 2026 13:34	53,691	1,800,030,500	1,747,809,000	23,983,000	2,523,136
4	Mar 22, 2026 13:33	53,713	1,806,971,387	1,745,567,000	26,977,000	2,387,968
5	Mar 22, 2026 13:34	53,742	1,803,327,966	1,747,511,000	25,977,000	2,416,640
6	Mar 22, 2026 13:33	53,767	1,799,747,972	1,749,323,000	24,990,000	2,408,448
7	Mar 22, 2026 13:34	53,768	1,806,396,432	1,744,367,000	29,989,000	2,424,832
8	Mar 22, 2026 13:33	53,799	1,802,499,286	1,745,397,000	29,972,000	2,560,000
9	Mar 22, 2026 13:32	53,833	1,801,580,504	1,752,525,000	23,979,000	2,555,904
10	Mar 22, 2026 13:33	53,855	1,806,150,551	1,753,212,000	23,989,000	2,445,312
11	Mar 22, 2026 13:33	53,889	1,812,130,922	1,752,371,000	25,975,000	2,437,120
12	Mar 22, 2026 13:33	53,898	1,809,947,961	1,759,659,000	18,985,000	2,338,816
13	Mar 22, 2026 13:33	53,910	1,806,790,756	1,758,030,000	20,988,000	2,478,080
14	Mar 22, 2026 13:33	54,000	1,810,624,511	1,759,007,000	22,987,000	2,322,432
15	Mar 22, 2026 13:33	54,007	1,809,777,152	1,761,259,000	20,979,000	2,416,640
16	Mar 22, 2026 13:33	54,023	1,815,311,123	1,759,768,000	22,983,000	2,355,200
17	Mar 22, 2026 13:33	54,034	1,812,923,555	1,756,138,000	26,986,000	2,433,024
18	Mar 22, 2026 13:32	54,044	1,807,586,202	1,758,472,000	24,978,000	2,355,200
19	Mar 22, 2026 13:32	54,055	1,817,975,455	1,752,820,000	30,979,000	2,551,808
20	Mar 22, 2026 13:33	54,080	1,816,630,051	1,761,667,000	22,982,000	2,461,696
21	Mar 22, 2026 13:33	54,111	1,825,630,239	1,758,698,000	26,980,000	2,355,200
22	Mar 22, 2026 13:34	54,131	1,819,815,448	1,766,330,000	19,981,000	2,412,544
23	Mar 22, 2026 13:33	54,207	1,819,533,358	1,765,845,000	22,984,000	2,355,200
24	Mar 22, 2026 13:33	54,222	1,820,491,605	1,762,329,000	26,989,000	2,506,752
25	Mar 22, 2026 13:34	54,269	1,817,352,459	1,763,905,000	26,983,000	2,355,200
26	Mar 22, 2026 13:32	54,276	1,821,087,798	1,768,133,000	22,988,000	2,482,176
27	Mar 22, 2026 13:33	54,291	1,822,154,912	1,767,627,000	23,981,000	2,572,288
28	Mar 22, 2026 13:33	54,316	1,824,867,443	1,766,427,000	25,991,000	2,416,640
29	Mar 22, 2026 13:33	54,331	1,823,540,936	1,767,947,000	24,985,000	2,449,408
30	Mar 22, 2026 13:33	54,331	1,825,205,964	1,766,952,000	25,984,000	2,371,584
31	Mar 22, 2026 13:33	54,501	1,826,505,355	1,776,549,000	21,982,000	2,326,528
32	Mar 22, 2026 13:32	54,514	1,818,200,993	1,776,982,000	21,987,000	2,498,560
33	Mar 22, 2026 13:33	54,623	1,830,726,435	1,778,586,000	23,967,000	2,564,096
34	Mar 22, 2026 13:34	54,721	1,840,569,763	1,777,796,000	27,981,000	2,408,448
35	Mar 22, 2026 13:33	54,775	1,844,736,344	1,786,596,000	20,983,000	2,420,736
36	Mar 22, 2026 13:33	55,560	1,861,712,115	1,807,490,000	25,978,000	2,322,432

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