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
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	Error	+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
Feb 21, 2026 01:48	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:42	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:41	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:40	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:21	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:17	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:14	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:11	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:09	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:04	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 01:02	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:59	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:57	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:54	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:52	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:49	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:20	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:18	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:14	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:11	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:09	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:06	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:04	Josu San Martin	CPPg++13.3.0	Error
Feb 21, 2026 00:01	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:59	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:56	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:54	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:51	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:48	Josu San Martin	CPPg++13.3.0	Error
Feb 20, 2026 23:41	Josu San Martin	CPPg++13.3.0	Success	4,404
Feb 20, 2026 23:06	Josu San Martin	CPPg++13.3.0	Success	4,309
Feb 19, 2026 03:13	Josu San Martin	CPPg++13.3.0	Success	4,305
Feb 19, 2026 01:45	Josu San Martin	CPPg++13.3.0	Success	4,337
Feb 19, 2026 01:43	Josu San Martin	CPPg++13.3.0	Success	4,303+0.54 RP
Feb 19, 2026 01:41	Josu San Martin	CPPg++13.3.0	Success	4,322
Feb 19, 2026 01:37	Josu San Martin	CPPg++13.3.0	Error
Feb 19, 2026 01:35	Josu San Martin	CPPg++13.3.0	Success	4,342
Feb 19, 2026 00:42	Josu San Martin	CPPg++13.3.0	Success	4,322
Feb 19, 2026 00:41	Josu San Martin	CPPclang++18.1.3	Success	4,701
Feb 19, 2026 00:40	Josu San Martin	CPPg++13.3.0	Success	4,307
Feb 19, 2026 00:10	Josu San Martin	CPPg++13.3.0	Success	4,314
Feb 19, 2026 00:02	Josu San Martin	CPPg++13.3.0	Success	4,350
Feb 19, 2026 00:02	Josu San Martin	CPPg++13.3.0	Success	4,309
Feb 18, 2026 23:19	Josu San Martin	CPPg++13.3.0	Success	4,693
Feb 18, 2026 23:06	Josu San Martin	CPPg++13.3.0	Success	4,311
Feb 18, 2026 22:51	Josu San Martin	CPPg++13.3.0	Success	4,331
Feb 18, 2026 22:49	Josu San Martin	CPPg++13.3.0	Success	4,328
Feb 18, 2026 21:12	Alexander Krivolapov	RUSTrust-1.93.1	Success	42,803
Feb 18, 2026 21:10	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 18, 2026 21:06	Alexander Krivolapov	RUSTrust-1.93.1	Success	39,639+214.76 RP
Feb 18, 2026 20:58	Alexander Krivolapov	RUSTrust-1.93.1	Error
Feb 18, 2026 00:43	olliecrow	CPPg++13.3.0	Success	16,313
Feb 18, 2026 00:39	olliecrow	CPPg++13.3.0	Success	17,059
Feb 13, 2026 11:11	Furorem	RUSTrust-1.93.1	Success	256,353+0.67 RP
Feb 13, 2026 11:00	Furorem	RUSTrust-1.93.1	Success	261,049
Feb 13, 2026 10:56	Furorem	RUSTrust-1.93.1	Success	260,820+0.74 RP
Feb 13, 2026 10:48	Furorem	RUSTrust-1.93.1	Success	265,918+37.61 RP
Feb 13, 2026 10:00	Nico	CPPg++13.3.0	Success	34,858+3.46 RP
Feb 13, 2026 09:51	Nico	CPPg++13.3.0	Success	35,284+0.79 RP
Feb 13, 2026 09:48	Nico	CPPg++13.3.0	Success	35,383+0.72 RP
Feb 12, 2026 09:00	olliecrow	CPPg++13.3.0	Success	14,431
Feb 12, 2026 08:26	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 07:21	olliecrow	CPPg++13.3.0	Success	14,495
Feb 12, 2026 07:09	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 06:49	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 06:44	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 06:39	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 06:09	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 06:05	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 05:59	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 05:55	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 05:50	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 05:45	olliecrow	CPPg++13.3.0	Error
Feb 12, 2026 05:39	olliecrow	CPPg++13.3.0	Error

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