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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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 21, 2026 23:34	Josu San Martin	CPPg++13.3.0	Success	4,315
Jan 21, 2026 23:30	Josu San Martin	CPPclang++18.1.3	Success	4,709
Jan 21, 2026 23:29	Josu San Martin	CPPclang++18.1.3	Success	4,720
Jan 21, 2026 23:29	Josu San Martin	CPPclang++18.1.3	Success	4,724
Jan 21, 2026 22:33	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:33	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:33	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:32	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:32	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:32	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:29	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 22:28	Josu San Martin	CPPg++13.3.0	Error
Jan 21, 2026 20:21	Josu San Martin	CPPg++13.3.0	Success	5,052
Jan 21, 2026 19:13	Josu San Martin	CPPg++13.3.0	Success	4,836
Jan 21, 2026 03:31	Josu San Martin	CPPg++13.3.0	Success	5,191
Jan 20, 2026 20:10	Pavel Skripkin	RUSTrust-1.92.0	Success	24,020
Jan 20, 2026 20:02	Pavel Skripkin	RUSTrust-1.92.0	Success	25,458
Jan 20, 2026 19:51	Pavel Skripkin	RUSTrust-1.92.0	Success	30,855
Jan 20, 2026 19:44	Pavel Skripkin	RUSTrust-1.92.0	Success	24,508
Jan 20, 2026 19:06	Pavel Skripkin	RUSTrust-1.92.0	Success	20,738+0.67 RP
Jan 20, 2026 19:02	Pavel Skripkin	RUSTrust-1.92.0	Success	26,544
Jan 20, 2026 18:52	Pavel Skripkin	RUSTrust-1.92.0	Success	20,767+5.27 RP
Jan 20, 2026 18:43	Pavel Skripkin	RUSTrust-1.92.0	Success	20,997+0.63 RP
Jan 19, 2026 21:12	Pavel Skripkin	RUSTrust-1.92.0	Success	21,025+163.03 RP
Jan 19, 2026 21:12	Pavel Skripkin	RUSTrust-1.92.0	Error
Jan 19, 2026 21:10	Pavel Skripkin	RUSTrust-1.92.0	Success	31,990+86.12 RP
Jan 19, 2026 21:07	Pavel Skripkin	RUSTrust-1.92.0	Success	44,154+3.58 RP
Jan 19, 2026 20:30	Pavel Skripkin	RUSTrust-1.92.0	Success	44,863+31.27 RP
Jan 19, 2026 20:24	Pavel Skripkin	RUSTrust-1.92.0	Success	84,368
Jan 18, 2026 01:38	Josu San Martin	CPPg++13.3.0	Success	5,564
Jan 18, 2026 01:21	Josu San Martin	CPPg++13.3.0	Success	4,309
Jan 18, 2026 01:09	Josu San Martin	CPPg++13.3.0	Success	9,133
Jan 18, 2026 01:08	Josu San Martin	CPPg++13.3.0	Success	4,464
Jan 17, 2026 16:58	Josu San Martin	CPPg++13.3.0	Success	17,290
Jan 17, 2026 15:25	Josu San Martin	CPPg++13.3.0	Error
Jan 16, 2026 22:25	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 22:23	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 22:20	Adam Folwarczny	CPPg++13.3.0	Success	10,369
Jan 16, 2026 22:19	Adam Folwarczny	CPPg++13.3.0	Success	10,715
Jan 16, 2026 21:07	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 21:06	Adam Folwarczny	CPPg++13.3.0	Success	10,489
Jan 16, 2026 21:04	Adam Folwarczny	CPPg++13.3.0	Success	9,646+3.11 RP
Jan 16, 2026 08:10	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 08:09	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 08:08	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 08:06	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 08:04	Adam Folwarczny	CPPg++13.3.0	Error
Jan 16, 2026 02:26	Josu San Martin	CPPg++13.3.0	Success	5,199
Jan 15, 2026 23:35	Adam Folwarczny	CPPg++13.3.0	Success	10,464
Jan 15, 2026 23:32	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:29	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:29	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:27	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:26	Adam Folwarczny	CPPg++13.3.0	Success	10,180
Jan 15, 2026 23:23	Adam Folwarczny	CPPg++13.3.0	Success	9,675+9.42 RP
Jan 15, 2026 23:22	Adam Folwarczny	CPPg++13.3.0	Success	9,886
Jan 15, 2026 23:22	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:21	Adam Folwarczny	CPPg++13.3.0	Success	9,764+62.17 RP
Jan 15, 2026 23:17	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:15	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:14	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:14	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:12	Adam Folwarczny	CPPg++13.3.0	Success	10,575
Jan 15, 2026 23:12	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:07	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:04	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 23:03	Adam Folwarczny	CPPg++13.3.0	Success	10,395+70.50 RP
Jan 15, 2026 23:01	Adam Folwarczny	CPPg++13.3.0	Success	11,217+1.27 RP
Jan 15, 2026 23:00	Adam Folwarczny	CPPg++13.3.0	Success	11,233+1.82 RP
Jan 15, 2026 22:56	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:49	Adam Folwarczny	CPPg++13.3.0	Success	11,256+10.68 RP
Jan 15, 2026 22:49	Adam Folwarczny	CPPg++13.3.0	Success	11,499
Jan 15, 2026 22:49	Adam Folwarczny	CPPg++13.3.0	Success	11,699
Jan 15, 2026 22:49	Adam Folwarczny	CPPg++13.3.0	Success	11,398
Jan 15, 2026 22:47	Adam Folwarczny	CPPg++13.3.0	Success	11,864
Jan 15, 2026 22:47	Adam Folwarczny	CPPg++13.3.0	Success	11,671
Jan 15, 2026 22:46	Adam Folwarczny	CPPg++13.3.0	Success	12,104
Jan 15, 2026 22:45	Adam Folwarczny	CPPg++13.3.0	Success	11,999
Jan 15, 2026 22:45	Adam Folwarczny	CPPg++13.3.0	Success	11,889
Jan 15, 2026 22:44	Adam Folwarczny	CPPg++13.3.0	Success	11,918
Jan 15, 2026 22:39	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:38	Adam Folwarczny	CPPg++13.3.0	Success	11,393+6.96 RP
Jan 15, 2026 22:36	Adam Folwarczny	CPPg++13.3.0	Success	11,484+24.90 RP
Jan 15, 2026 22:33	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:31	Adam Folwarczny	CPPg++13.3.0	Success	11,822+62.43 RP
Jan 15, 2026 22:30	Adam Folwarczny	CPPg++13.3.0	Success	12,764+51.55 RP
Jan 15, 2026 22:29	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:26	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:25	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:24	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:23	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:22	Adam Folwarczny	CPPg++13.3.0	Success	16,250
Jan 15, 2026 22:17	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:17	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:10	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:09	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 22:03	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:59	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:59	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:56	Adam Folwarczny	CPPg++13.3.0	Error

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