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.

Date	Author	Language	Status	Score
Jan 8, 2026 23:33	Josu San Martin	CPPg++13.3.0	Error
Jan 8, 2026 23:20	Josu San Martin	CPPg++13.3.0	Error
Jan 8, 2026 22:39	Josu San Martin	RUSTrust-1.92.0	Success	10,264
Jan 8, 2026 21:11	Josu San Martin	RUSTrust-1.92.0	Success	15,644
Jan 8, 2026 21:10	Josu San Martin	RUSTrust-1.92.0	Success	36,288
Jan 8, 2026 21:10	Josu San Martin	RUSTrust-1.92.0	Success	14,009
Jan 8, 2026 20:41	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 20:41	Josu San Martin	RUSTrust-1.92.0	Success	9,998
Jan 8, 2026 20:35	Josu San Martin	RUSTrust-1.92.0	Success	9,225
Jan 8, 2026 20:31	Josu San Martin	RUSTrust-1.92.0	Success	9,095
Jan 8, 2026 20:27	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 20:27	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 20:24	Josu San Martin	CPPg++13.3.0	Success	9,371
Jan 8, 2026 20:23	Josu San Martin	RUSTrust-1.92.0	Success	8,918
Jan 8, 2026 20:23	Josu San Martin	RUSTrust-1.92.0	Success	8,883
Jan 8, 2026 20:16	Josu San Martin	RUSTrust-1.92.0	Success	8,864+142.68 RP
Jan 8, 2026 20:14	Павел Ратманов	CPPg++13.3.0	Success	41,253
Jan 8, 2026 20:13	Павел Ратманов	CPPg++13.3.0	Success	41,936
Jan 8, 2026 20:12	Павел Ратманов	CPPg++13.3.0	Success	40,257
Jan 8, 2026 20:10	Josu San Martin	RUSTrust-1.92.0	Success	29,060
Jan 8, 2026 20:10	Павел Ратманов	CPPg++13.3.0	Success	39,670
Jan 8, 2026 20:08	Павел Ратманов	CPPg++13.3.0	Success	39,955
Jan 8, 2026 20:07	Josu San Martin	CPPg++13.3.0	Success	9,385+2.49 RP
Jan 8, 2026 19:55	Павел Ратманов	CPPg++13.3.0	Success	51,617
Jan 8, 2026 19:54	Josu San Martin	RUSTrust-1.92.0	Success	10,356
Jan 8, 2026 19:52	Josu San Martin	RUSTrust-1.92.0	Success	11,098
Jan 8, 2026 19:52	Josu San Martin	RUSTrust-1.92.0	Success	10,256
Jan 8, 2026 19:43	Josu San Martin	RUSTrust-1.92.0	Success	9,758
Jan 8, 2026 19:43	Josu San Martin	RUSTrust-1.92.0	Success	9,541+256.09 RP
Jan 8, 2026 19:41	Josu San Martin	CPPg++13.3.0	Success	9,407+63.44 RP
Jan 8, 2026 19:39	Павел Ратманов	CPPg++13.3.0	Success	47,135
Jan 8, 2026 19:38	Павел Ратманов	CPPg++13.3.0	Success	44,780
Jan 8, 2026 19:32	Павел Ратманов	CPPg++13.3.0	Success	39,589
Jan 8, 2026 19:31	Павел Ратманов	CPPg++13.3.0	Success	39,428+0.34 RP
Jan 8, 2026 19:28	Павел Ратманов	CPPg++13.3.0	Success	39,481+0.67 RP
Jan 8, 2026 19:22	Павел Ратманов	CPPg++13.3.0	Success	39,585+0.50 RP
Jan 8, 2026 19:19	Павел Ратманов	CPPg++13.3.0	Success	39,664+0.74 RP
Jan 8, 2026 19:18	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 19:11	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 19:11	Josu San Martin	RUSTrust-1.92.0	Success	17,451
Jan 8, 2026 19:10	Josu San Martin	RUSTrust-1.92.0	Success	16,403
Jan 8, 2026 19:10	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 19:09	Josu San Martin	CPPg++13.3.0	Error
Jan 8, 2026 19:09	Josu San Martin	CPPg++13.3.0	Success	10,004+207.58 RP
Jan 8, 2026 19:05	Josu San Martin	RUSTrust-1.92.0	Success	12,626+18.10 RP
Jan 8, 2026 18:49	Josu San Martin	CPPg++13.3.0	Error
Jan 8, 2026 18:48	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 18:42	Josu San Martin	CPPg++13.3.0	Success	14,205
Jan 8, 2026 18:38	Josu San Martin	RUSTrust-1.92.0	Success	30,038
Jan 8, 2026 17:56	Josu San Martin	RUSTrust-1.92.0	Success	12,978
Jan 8, 2026 17:55	Josu San Martin	RUSTrust-1.92.0	Success	28,466
Jan 8, 2026 17:53	Josu San Martin	RUSTrust-1.92.0	Success	30,490
Jan 8, 2026 17:21	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:17	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:14	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:11	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:11	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:11	Josu San Martin	RUSTrust-1.92.0	Success	23,807
Jan 8, 2026 17:11	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 17:10	Josu San Martin	RUSTrust-1.92.0	Success	22,035
Jan 8, 2026 17:07	Josu San Martin	RUSTrust-1.92.0	Success	16,219
Jan 8, 2026 16:37	Josu San Martin	RUSTrust-1.92.0	Success	13,038
Jan 8, 2026 16:35	Josu San Martin	RUSTrust-1.92.0	Success	17,871
Jan 8, 2026 16:34	Josu San Martin	RUSTrust-1.92.0	Success	16,765
Jan 8, 2026 16:34	Josu San Martin	RUSTrust-1.92.0	Success	18,453
Jan 8, 2026 16:33	Josu San Martin	RUSTrust-1.92.0	Success	16,738
Jan 8, 2026 16:08	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 8, 2026 08:41	Petsku01	CPPg++13.3.0	Error
Jan 8, 2026 08:09	Petsku01	CPPg++13.3.0	Error
Jan 8, 2026 07:51	Petsku01	CPPg++13.3.0	Error
Jan 8, 2026 07:25	Petsku01	CPPg++13.3.0	Error
Jan 8, 2026 07:22	Petsku01	CPPg++13.3.0	Error
Jan 8, 2026 07:09	Petsku01	CPPg++13.3.0	Success	118,815
Jan 8, 2026 06:59	Petsku01	CPPg++13.3.0	Success	109,767+15.82 RP
Jan 8, 2026 06:55	Petsku01	CPPg++13.3.0	Success	132,840+37.93 RP
Jan 8, 2026 06:21	Petsku01	CPPg++13.3.0	Success	305,781
Jan 8, 2026 06:18	Petsku01	RUSTrust-1.92.0	Success	267,776+37.34 RP
Jan 8, 2026 04:53	Josu San Martin	CPPg++13.3.0	Success	12,927
Jan 8, 2026 04:47	Josu San Martin	CPPg++13.3.0	Success	16,084
Jan 8, 2026 04:47	Josu San Martin	CPPg++13.3.0	Success	13,169
Jan 8, 2026 04:44	Josu San Martin	RUSTrust-1.92.0	Success	16,340
Jan 8, 2026 04:43	Josu San Martin	CPPg++13.3.0	Success	15,549
Jan 8, 2026 04:43	Josu San Martin	CPPg++13.3.0	Success	16,138
Jan 8, 2026 04:41	Josu San Martin	RUSTrust-1.92.0	Success	12,772+45.33 RP
Jan 8, 2026 04:38	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:34	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:33	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:33	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:33	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:33	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:33	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:30	Josu San Martin	RUSTrust-1.92.0	Success	16,512
Jan 8, 2026 04:24	Josu San Martin	CPPg++13.3.0	Success	23,137
Jan 8, 2026 04:24	Josu San Martin	CPPg++13.3.0	Success	17,040
Jan 8, 2026 04:24	Josu San Martin	CPPg++13.3.0	Success	16,593
Jan 8, 2026 04:24	Josu San Martin	RUSTrust-1.92.0	Success	16,958
Jan 8, 2026 04:22	Josu San Martin	RUSTrust-1.92.0	Success	29,574
Jan 8, 2026 04:20	Josu San Martin	RUSTrust-1.92.0	Success	50,157
Jan 8, 2026 04:18	Josu San Martin	RUSTrust-1.92.0	Error
Jan 8, 2026 04:18	Josu San Martin	RUSTrust-1.92.0	Error

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