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 15, 2026 21:56	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:52	Adam Folwarczny	CPPg++13.3.0	Success	13,753
Jan 15, 2026 21:50	Adam Folwarczny	CPPg++13.3.0	Success	17,830
Jan 15, 2026 21:46	Adam Folwarczny	CPPg++13.3.0	Success	14,037
Jan 15, 2026 21:42	Adam Folwarczny	CPPg++13.3.0	Success	13,782
Jan 15, 2026 21:40	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:37	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 21:35	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 16:09	Adam Folwarczny	CPPg++13.3.0	Success	17,908
Jan 15, 2026 16:04	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 16:02	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 16:01	Adam Folwarczny	CPPg++13.3.0	Success	13,672
Jan 15, 2026 15:57	Adam Folwarczny	CPPg++13.3.0	Success	13,663+20.46 RP
Jan 15, 2026 15:52	Adam Folwarczny	CPPg++13.3.0	Success	14,456
Jan 15, 2026 15:50	Adam Folwarczny	CPPg++13.3.0	Success	14,545
Jan 15, 2026 15:44	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 15:38	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 15:36	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 15:35	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 14:26	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 14:25	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 14:24	Adam Folwarczny	CPPg++13.3.0	Success	14,165
Jan 15, 2026 14:24	Adam Folwarczny	CPPg++13.3.0	Error
Jan 15, 2026 03:46	Josu San Martin	CPPg++13.3.0	Error
Jan 15, 2026 03:40	Josu San Martin	CPPg++13.3.0	Success	9,356
Jan 15, 2026 03:36	Josu San Martin	CPPg++13.3.0	Error
Jan 15, 2026 03:23	Josu San Martin	CPPg++13.3.0	Success	5,827
Jan 15, 2026 03:13	Josu San Martin	CPPg++13.3.0	Success	4,309
Jan 15, 2026 03:02	Josu San Martin	CPPg++13.3.0	Success	13,523
Jan 15, 2026 02:54	Josu San Martin	CPPg++13.3.0	Error
Jan 15, 2026 02:53	Josu San Martin	CPPg++13.3.0	Error
Jan 15, 2026 02:27	Josu San Martin	CPPg++13.3.0	Success	5,184
Jan 15, 2026 01:18	Josu San Martin	CPPg++13.3.0	Success	10,794
Jan 15, 2026 00:29	Josu San Martin	CPPg++13.3.0	Success	4,307
Jan 14, 2026 23:48	Josu San Martin	CPPg++13.3.0	Success	5,238
Jan 14, 2026 23:15	Josu San Martin	CPPg++13.3.0	Success	4,314
Jan 14, 2026 22:30	Josu San Martin	CPPg++13.3.0	Success	4,323
Jan 14, 2026 22:03	Adam Folwarczny	CPPg++13.3.0	Success	17,564
Jan 14, 2026 22:02	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 22:00	Adam Folwarczny	CPPg++13.3.0	Success	18,587
Jan 14, 2026 22:00	Adam Folwarczny	CPPg++13.3.0	Success	18,073
Jan 14, 2026 21:50	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 21:48	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 21:46	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 21:38	Adam Folwarczny	CPPg++13.3.0	Success	14,056+4.23 RP
Jan 14, 2026 21:35	Adam Folwarczny	CPPg++13.3.0	Success	19,970
Jan 14, 2026 21:34	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 21:33	Adam Folwarczny	CPPg++13.3.0	Success	20,778
Jan 14, 2026 21:28	Adam Folwarczny	CPPg++13.3.0	Success	19,833
Jan 14, 2026 21:26	Adam Folwarczny	CPPg++13.3.0	Success	18,981
Jan 14, 2026 21:26	Adam Folwarczny	CPPg++13.3.0	Success	17,016
Jan 14, 2026 21:25	Adam Folwarczny	CPPg++13.3.0	Success	17,173
Jan 14, 2026 21:22	Adam Folwarczny	CPPg++13.3.0	Success	19,781
Jan 14, 2026 21:00	Adam Folwarczny	CPPg++13.3.0	Success	18,254
Jan 14, 2026 20:55	Adam Folwarczny	CPPg++13.3.0	Success	14,176
Jan 14, 2026 20:53	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 20:45	Josu San Martin	CPPg++13.3.0	Success	4,324
Jan 14, 2026 20:11	Josu San Martin	CPPg++13.3.0	Success	4,312
Jan 14, 2026 19:36	Josu San Martin	CPPg++13.3.0	Success	4,613
Jan 14, 2026 19:22	Josu San Martin	CPPg++13.3.0	Success	4,621
Jan 14, 2026 19:01	Josu San Martin	CPPg++13.3.0	Success	4,484
Jan 14, 2026 15:24	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 15:20	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:59	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:55	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:53	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:51	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:41	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:29	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:26	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:19	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:15	Adam Folwarczny	CPPg++13.3.0	Success	14,140+1.35 RP
Jan 14, 2026 12:12	Adam Folwarczny	CPPg++13.3.0	Success	14,226
Jan 14, 2026 12:06	Adam Folwarczny	CPPg++13.3.0	Success	14,245
Jan 14, 2026 12:03	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 12:01	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 11:51	Adam Folwarczny	CPPg++13.3.0	Success	14,167+47.75 RP
Jan 14, 2026 11:50	Adam Folwarczny	CPPclang++18.1.3	Success	15,195+5.50 RP
Jan 14, 2026 11:46	Adam Folwarczny	CPPclang++18.1.3	Error
Jan 14, 2026 11:44	Adam Folwarczny	CPPclang++18.1.3	Success	17,005
Jan 14, 2026 11:44	Adam Folwarczny	CPPg++13.3.0	Success	16,946
Jan 14, 2026 11:42	Adam Folwarczny	CPPg++13.3.0	Error
Jan 14, 2026 11:35	Adam Folwarczny	CPPg++13.3.0	Success	19,105
Jan 14, 2026 11:34	Adam Folwarczny	CPPg++13.3.0	Success	15,336
Jan 14, 2026 05:01	Rajarshi Basu	CPPg++13.3.0	Error
Jan 14, 2026 02:19	Josu San Martin	CPPg++13.3.0	Success	9,907
Jan 14, 2026 01:53	Josu San Martin	CPPg++13.3.0	Success	4,304+10.21 RP
Jan 14, 2026 01:42	Josu San Martin	CPPg++13.3.0	Success	4,339
Jan 14, 2026 01:24	Josu San Martin	CPPg++13.3.0	Success	4,486
Jan 14, 2026 01:13	Josu San Martin	CPPg++13.3.0	Success	4,323+0.53 RP
Jan 14, 2026 00:02	Adam Folwarczny	CPPg++13.3.0	Success	15,323+0.26 RP
Jan 14, 2026 00:02	Adam Folwarczny	CPPclang++18.1.3	Success	16,544
Jan 13, 2026 23:58	Adam Folwarczny	CPPclang++18.1.3	Error
Jan 13, 2026 23:57	Adam Folwarczny	CPPclang++18.1.3	Error
Jan 13, 2026 23:54	Adam Folwarczny	CPPclang++18.1.3	Error
Jan 13, 2026 23:53	Adam Folwarczny	CPPclang++18.1.3	Error
Jan 13, 2026 23:49	Adam Folwarczny	CPPclang++18.1.3	Success	16,050
Jan 13, 2026 23:48	Adam Folwarczny	CPPg++13.3.0	Success	16,984
Jan 13, 2026 23:41	Adam Folwarczny	CPPg++13.3.0	Error
Jan 13, 2026 23:38	Adam Folwarczny	CPPg++13.3.0	Error

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