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 19:20

olliecrowScore: 18,403Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 11, 2026 19:20	18,286	625,370,714	578,417,000	25,018,000	2,371,584
2	Feb 11, 2026 19:17	18,290	626,069,651	577,601,000	25,982,000	2,486,272
3	Feb 11, 2026 19:21	18,332	634,245,828	579,952,000	24,997,000	2,461,696
4	Feb 11, 2026 19:21	18,336	633,532,578	580,074,000	25,003,000	2,473,984
5	Feb 11, 2026 19:21	18,339	632,429,367	579,174,000	26,007,000	2,351,104
6	Feb 11, 2026 19:17	18,341	637,215,577	579,234,000	26,010,000	2,461,696
7	Feb 11, 2026 19:21	18,347	628,839,274	579,462,000	25,975,000	2,461,696
8	Feb 11, 2026 19:17	18,351	629,345,302	579,592,000	25,981,000	2,457,600
9	Feb 11, 2026 19:08	18,355	632,381,512	579,723,000	25,987,000	2,379,776
10	Feb 11, 2026 19:21	18,358	629,838,368	580,810,000	24,991,000	2,310,144
11	Feb 11, 2026 19:17	18,360	628,463,865	580,878,000	24,994,000	2,486,272
12	Feb 11, 2026 19:08	18,361	633,825,687	582,927,000	22,997,000	2,465,792
13	Feb 11, 2026 19:20	18,364	634,359,007	581,010,000	25,000,000	2,461,696
14	Feb 11, 2026 19:16	18,374	631,935,030	580,357,000	25,971,000	2,318,336
15	Feb 11, 2026 19:17	18,378	632,946,484	582,483,000	23,978,000	2,314,240
16	Feb 11, 2026 19:21	18,386	630,810,129	581,744,000	24,989,000	2,453,504
17	Feb 11, 2026 19:21	18,391	633,714,159	582,914,000	23,996,000	2,494,464
18	Feb 11, 2026 19:08	18,395	628,394,981	583,035,000	24,001,000	2,465,792
19	Feb 11, 2026 19:08	18,395	629,601,844	583,031,000	24,001,000	2,461,696
20	Feb 11, 2026 19:20	18,398	632,370,874	582,130,000	25,005,000	2,392,064
21	Feb 11, 2026 19:21	18,401	637,834,797	582,219,000	25,009,000	2,494,464
22	Feb 11, 2026 19:17	18,401	638,841,863	583,236,000	24,009,000	2,301,952
23	Feb 11, 2026 19:21	18,403	635,904,424	581,271,000	26,012,000	2,457,600
24	Feb 11, 2026 19:20	18,408	639,260,436	583,496,000	23,979,000	2,277,376
25	Feb 11, 2026 19:21	18,409	635,200,754	582,512,000	24,979,000	2,371,584
26	Feb 11, 2026 19:21	18,411	631,955,483	581,584,000	25,981,000	2,461,696
27	Feb 11, 2026 19:08	18,416	631,274,841	581,736,000	25,988,000	2,457,600
28	Feb 11, 2026 19:08	18,418	635,427,222	583,817,000	23,992,000	2,269,184
29	Feb 11, 2026 19:16	18,421	629,487,386	582,887,000	24,995,000	2,457,600
30	Feb 11, 2026 19:08	18,423	630,563,394	581,976,000	25,998,000	2,457,600
31	Feb 11, 2026 19:08	18,429	630,607,690	582,162,000	26,007,000	2,449,408
32	Feb 11, 2026 19:16	18,431	639,988,539	583,208,000	25,008,000	2,363,392
33	Feb 11, 2026 19:21	18,436	640,341,077	583,406,000	24,974,000	2,433,024
34	Feb 11, 2026 19:21	18,451	637,127,652	583,894,000	24,995,000	2,379,776
35	Feb 11, 2026 19:21	18,455	635,136,761	584,018,000	25,000,000	2,306,048
36	Feb 11, 2026 19:08	18,456	633,451,983	585,041,000	24,001,000	2,277,376
37	Feb 11, 2026 19:17	18,458	641,632,721	583,111,000	26,004,000	2,314,240
38	Feb 11, 2026 19:21	18,462	640,976,386	583,239,000	26,010,000	2,449,408
39	Feb 11, 2026 19:20	18,474	633,990,724	583,662,000	25,984,000	2,277,376
40	Feb 11, 2026 19:21	18,481	639,181,499	585,887,000	23,995,000	2,404,352
41	Feb 11, 2026 19:17	18,482	634,899,904	584,902,000	24,995,000	2,359,296
42	Feb 11, 2026 19:17	18,483	636,358,667	584,932,000	24,997,000	2,301,952
43	Feb 11, 2026 19:21	18,485	633,573,165	585,015,000	25,000,000	2,453,504
44	Feb 11, 2026 19:21	18,490	636,128,775	586,151,000	24,006,000	2,342,912
45	Feb 11, 2026 19:20	18,552	636,566,626	588,219,000	24,008,000	2,289,664

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