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
Feb 28, 2026 22:11	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 22:02	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:58	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:56	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:53	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:50	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:47	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:44	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:42	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:40	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:39	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:38	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:21	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:20	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:16	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:13	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:11	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:09	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:08	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:06	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:04	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:02	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 21:01	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:59	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:57	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:56	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:55	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:54	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:52	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:51	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:34	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 20:33	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 19:05	Alexander Krivolapov	RUSTrust-1.93.1	Success	32,724+48.58 RP
Feb 28, 2026 19:04	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 19:03	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 28, 2026 19:01	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 26, 2026 13:08	Josu San Martin	CPPg++13.3.0	Success	4,244
Feb 26, 2026 04:29	Josu San Martin	CPPg++13.3.0	Success	4,119
Feb 26, 2026 03:36	Josu San Martin	CPPg++13.3.0	Success	4,907
Feb 26, 2026 03:14	Josu San Martin	CPPg++13.3.0	Error
Feb 25, 2026 20:49	Alexander Krivolapov	RUSTrust-1.93.1	Success	42,108
Feb 25, 2026 20:48	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:47	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:46	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:43	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:40	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:38	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:37	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:35	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 25, 2026 20:28	Alexander Krivolapov	RUSTrust-1.93.1	Success	41,605
Feb 24, 2026 12:47	Josu San Martin	CPPg++13.3.0	Success	4,116
Feb 23, 2026 18:18	Alexander Krivolapov	RUSTrust-1.93.1	Success	38,909+4.28 RP
Feb 23, 2026 18:16	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 18:15	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 18:14	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 18:12	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 18:09	satoru.net	CPPg++13.3.0	Success	45,874+217.99 RP
Feb 23, 2026 17:19	Alexander Krivolapov	RUSTrust-1.93.1	Success	95,364
Feb 23, 2026 17:18	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 17:14	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 17:12	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:44	Alexander Krivolapov	RUSTrust-1.93.1	Success	39,568+0.45 RP
Feb 23, 2026 16:42	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:39	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:38	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:11	Alexander Krivolapov	RUSTrust-1.93.1	Success	40,307
Feb 23, 2026 16:08	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:05	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:04	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 16:02	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 23, 2026 13:36	Yuriy Lyfenko	CPPclang++18.1.3	Error
Feb 23, 2026 13:35	Yuriy Lyfenko	CPPclang++18.1.3	Success	8,477+1.95 RP
Feb 23, 2026 13:21	Josu San Martin	CPPg++13.3.0	Success	4,088
Feb 23, 2026 06:15	Yuriy Lyfenko	CPPg++13.3.0	Error
Feb 23, 2026 06:14	Yuriy Lyfenko	CPPg++13.3.0	Error
Feb 22, 2026 20:09	Sneed	RUSTrust-1.93.1	Success	84,601+8.13 RP
Feb 22, 2026 20:05	Sneed	RUSTrust-1.93.1	Success	90,851+7.42 RP
Feb 22, 2026 19:44	Sneed	RUSTrust-1.93.1	Success	103,351
Feb 22, 2026 19:42	Sneed	RUSTrust-1.93.1	Success	113,616
Feb 22, 2026 19:40	Sneed	RUSTrust-1.93.1	Success	97,414+13.88 RP
Feb 22, 2026 19:30	Sneed	RUSTrust-1.93.1	Success	449,087
Feb 22, 2026 19:26	Sneed	RUSTrust-1.93.1	Success	121,138
Feb 22, 2026 19:24	Sneed	RUSTrust-1.93.1	Success	113,799
Feb 22, 2026 19:17	Sneed	RUSTrust-1.93.1	Success	112,640+88.78 RP
Feb 22, 2026 19:16	Sneed	RUSTrust-1.93.1	Error
Feb 22, 2026 19:13	Sneed	RUSTrust-1.93.1	Error
Feb 22, 2026 15:09	Josu San Martin	CPPg++13.3.0	Success	4,084+97.85 RP
Feb 21, 2026 19:28	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 15:05	Alexander Krivolapov	RUSTrust-1.93.1	Success	40,788
Feb 21, 2026 15:01	Alexander Krivolapov	RUSTrust-1.93.1	Success	48,606
Feb 21, 2026 15:00	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 21, 2026 05:44	Josu San Martin	CPPclang++18.1.3	Success	4,396
Feb 21, 2026 05:37	Josu San Martin	CPPg++13.3.0	Success	4,254+8.81 RP
Feb 21, 2026 05:36	Josu San Martin	CPPg++13.3.0	Success	4,270+17.96 RP
Feb 21, 2026 03:28	Josu San Martin	CPPg++13.3.0	Success	4,310
Feb 21, 2026 03:14	Josu San Martin	CPPg++13.3.0	Success	4,313
Feb 21, 2026 02:03	Josu San Martin	CPPg++13.3.0	Success	4,570
Feb 21, 2026 01:59	Josu San Martin	CPPg++13.3.0	Success	4,344
Feb 21, 2026 01:58	Josu San Martin	CPPg++13.3.0	Success	4,330
Feb 21, 2026 01:55	Josu San Martin	CPPg++13.3.0	Success	4,323

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