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 07:48

olliecrowScore: 9,712Success

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 07:48	9,673	344,603,430	275,184,000	44,029,000	2,420,736
2	Mar 22, 2026 08:03	9,684	341,221,746	280,633,000	38,949,000	2,519,040
3	Mar 22, 2026 08:14	9,685	344,250,566	277,669,000	41,950,000	2,424,832
4	Mar 22, 2026 08:14	9,689	345,831,127	287,666,000	32,074,000	2,519,040
5	Mar 22, 2026 08:00	9,692	339,317,211	283,856,000	35,981,000	2,506,752
6	Mar 22, 2026 08:14	9,694	339,662,767	264,919,000	54,983,000	2,412,544
7	Mar 22, 2026 08:03	9,694	342,891,280	273,928,000	45,987,000	2,412,544
8	Mar 22, 2026 08:14	9,696	344,686,398	284,974,000	34,996,000	2,506,752
9	Mar 22, 2026 08:14	9,700	343,950,681	269,076,000	51,014,000	2,519,040
10	Mar 22, 2026 07:48	9,701	342,043,536	278,122,000	42,018,000	2,408,448
11	Mar 22, 2026 08:32	9,701	345,250,775	286,130,000	34,015,000	2,519,040
12	Mar 22, 2026 08:32	9,701	341,510,664	285,129,000	35,015,000	2,510,848
13	Mar 22, 2026 08:00	9,702	346,609,867	282,158,000	38,021,000	2,490,368
14	Mar 22, 2026 08:00	9,706	344,657,774	282,264,000	38,035,000	2,420,736
15	Mar 22, 2026 08:03	9,708	345,951,447	281,312,000	39,043,000	2,416,640
16	Mar 22, 2026 07:48	9,710	347,985,294	278,363,000	42,054,000	2,523,136
17	Mar 22, 2026 08:03	9,710	347,562,660	285,392,000	35,048,000	2,416,640
18	Mar 22, 2026 08:00	9,710	345,906,381	266,516,000	53,902,000	2,347,008
19	Mar 22, 2026 08:14	9,711	344,259,554	280,541,000	39,934,000	2,416,640
20	Mar 22, 2026 08:00	9,712	346,627,936	279,573,000	40,937,000	2,490,368
21	Mar 22, 2026 08:03	9,715	345,986,692	282,637,000	37,951,000	2,416,640
22	Mar 22, 2026 08:03	9,715	345,670,230	282,651,000	37,953,000	2,519,040
23	Mar 22, 2026 08:14	9,716	341,333,323	271,676,000	48,941,000	2,478,080
24	Mar 22, 2026 08:14	9,716	339,831,766	276,670,000	43,947,000	2,412,544
25	Mar 22, 2026 08:00	9,720	340,767,198	279,783,000	40,968,000	2,519,040
26	Mar 22, 2026 08:03	9,727	340,579,901	277,998,000	42,999,000	2,420,736
27	Mar 22, 2026 08:03	9,727	342,748,875	289,986,000	30,998,000	2,347,008
28	Mar 22, 2026 07:48	9,728	348,849,652	283,014,000	38,001,000	2,420,736
29	Mar 22, 2026 08:03	9,733	347,624,234	280,169,000	41,024,000	2,416,640
30	Mar 22, 2026 07:48	9,738	354,977,879	277,318,000	44,050,000	2,490,368
31	Mar 22, 2026 07:48	9,741	346,931,008	289,522,000	31,947,000	2,416,640
32	Mar 22, 2026 08:00	9,745	344,069,435	278,637,000	42,944,000	2,424,832
33	Mar 22, 2026 08:32	9,750	346,031,421	271,776,000	49,958,000	2,506,752
34	Mar 22, 2026 08:14	9,773	347,906,025	283,579,000	38,942,000	2,424,832
35	Mar 22, 2026 07:48	9,835	348,099,800	279,616,000	44,938,000	2,502,656
36	Mar 22, 2026 08:00	10,344	367,360,957	293,433,000	47,907,000	2,502,656
37	Mar 22, 2026 08:00	10,345	366,583,744	302,327,000	39,042,000	2,514,944
38	Mar 22, 2026 07:48	10,444	365,237,243	305,689,000	38,960,000	2,424,832
39	Mar 22, 2026 07:48	10,988	403,458,077	314,514,000	48,078,000	2,338,816

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