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 7, 2026 21:47	Josu San Martin	RUSTrust-1.92.0	Error
Jan 7, 2026 21:47	Josu San Martin	RUSTrust-1.92.0	Success	16,259+66.64 RP
Jan 7, 2026 21:47	Josu San Martin	RUSTrust-1.92.0	Success	18,381
Jan 7, 2026 21:46	Josu San Martin	RUSTrust-1.92.0	Success	18,997
Jan 7, 2026 21:44	Павел Ратманов	CPPg++13.3.0	Success	39,781+1.76 RP
Jan 7, 2026 21:38	Павел Ратманов	CPPg++13.3.0	Error
Jan 7, 2026 21:32	Josu San Martin	RUSTrust-1.92.0	Success	48,994
Jan 7, 2026 21:32	Josu San Martin	RUSTrust-1.92.0	Success	39,397
Jan 7, 2026 21:29	Josu San Martin	RUSTrust-1.92.0	Success	36,181
Jan 7, 2026 21:29	Josu San Martin	RUSTrust-1.92.0	Success	33,383
Jan 7, 2026 21:29	Josu San Martin	RUSTrust-1.92.0	Success	58,103
Jan 7, 2026 21:13	Josu San Martin	RUSTrust-1.92.0	Success	17,830+16.72 RP
Jan 7, 2026 21:13	Josu San Martin	RUSTrust-1.92.0	Success	37,975
Jan 7, 2026 21:12	Josu San Martin	RUSTrust-1.92.0	Success	32,805
Jan 7, 2026 21:12	Josu San Martin	RUSTrust-1.92.0	Success	53,207
Jan 7, 2026 21:12	Josu San Martin	RUSTrust-1.92.0	Error
Jan 7, 2026 21:09	Josu San Martin	RUSTrust-1.92.0	Success	39,704
Jan 7, 2026 21:04	Josu San Martin	RUSTrust-1.92.0	Success	51,904
Jan 7, 2026 21:02	Josu San Martin	RUSTrust-1.92.0	Error
Jan 7, 2026 21:01	Josu San Martin	RUSTrust-1.92.0	Success	23,709
Jan 7, 2026 20:42	Aman \| अमन	CPPg++13.3.0	Success	25,644
Jan 7, 2026 20:42	Aman \| अमन	CPPg++13.3.0	Success	25,464+0.06 RP
Jan 7, 2026 20:39	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 20:39	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 20:38	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 20:37	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 20:36	Aman \| अमन	CPPg++13.3.0	Success	25,468+291.14 RP
Jan 7, 2026 20:36	Aman \| अमन	CPPg++13.3.0	Success	99,077
Jan 7, 2026 20:35	Aman \| अमन	CPPg++13.3.0	Success	98,511+49.70 RP
Jan 7, 2026 20:34	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 20:32	Josu San Martin	RUSTrust-1.92.0	Success	43,843
Jan 7, 2026 19:59	Aman \| अमन	CPPg++13.3.0	Error
Jan 7, 2026 19:59	Aman \| अमन	CPPg++13.3.0	Success	193,008+0.06 RP
Jan 7, 2026 19:59	Aman \| अमन	CPPg++13.3.0	Success	193,417
Jan 7, 2026 19:59	Aman \| अमन	CPPg++13.3.0	Success	193,223+0.17 RP
Jan 7, 2026 19:58	Aman \| अमन	CPPg++13.3.0	Success	193,852+1.35 RP
Jan 7, 2026 19:55	Aman \| अमन	CPPg++13.3.0	Success	199,058+18.28 RP
Jan 7, 2026 19:07	zielaj	CPPclang++18.1.3	Success	3,518
Jan 7, 2026 19:04	zielaj	CPPclang++18.1.3	Success	3,274
Jan 7, 2026 18:54	zielaj	CPPclang++18.1.3	Success	3,252
Jan 7, 2026 14:16	zielaj	CPPclang++18.1.3	Success	3,217
Jan 7, 2026 14:13	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 14:08	zielaj	CPPclang++18.1.3	Success	3,156
Jan 7, 2026 14:07	zielaj	CPPclang++18.1.3	Success	3,184
Jan 7, 2026 13:55	zielaj	CPPclang++18.1.3	Success	3,166
Jan 7, 2026 04:37	Josu San Martin	GOgo1.25.5	Success	18,378+15.64 RP
Jan 7, 2026 04:25	Josu San Martin	GOgo1.25.5	Success	18,646+66.70 RP
Jan 7, 2026 04:18	zielaj	CPPclang++18.1.3	Success	3,132
Jan 7, 2026 04:12	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 04:00	zielaj	CPPclang++18.1.3	Success	3,228
Jan 7, 2026 03:59	zielaj	CPPclang++18.1.3	Success	3,282
Jan 7, 2026 03:53	zielaj	CPPclang++18.1.3	Success	3,305
Jan 7, 2026 03:39	zielaj	CPPclang++18.1.3	Success	3,212
Jan 7, 2026 03:23	Josu San Martin	RUSTrust-1.92.0	Error
Jan 7, 2026 03:23	zielaj	CPPclang++18.1.3	Success	3,199
Jan 7, 2026 03:20	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 03:17	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 03:10	zielaj	CPPclang++18.1.3	Success	3,157
Jan 7, 2026 03:09	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 03:06	zielaj	CPPclang++18.1.3	Success	3,162
Jan 7, 2026 03:05	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 03:03	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:48	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:47	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:45	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:42	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:31	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:21	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:20	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:18	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:15	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 02:14	zielaj	CPPclang++18.1.3	Error
Jan 7, 2026 01:28	Josu San Martin	RUSTrust-1.92.0	Success	41,993
Jan 6, 2026 23:51	Josu San Martin	RUSTrust-1.92.0	Error
Jan 6, 2026 23:44	Josu San Martin	RUSTrust-1.92.0	Error
Jan 6, 2026 23:42	Josu San Martin	RUSTrust-1.92.0	Error
Jan 6, 2026 23:34	Aman \| अमन	CPPg++13.3.0	Error
Jan 6, 2026 23:34	Aman \| अमन	CPPg++13.3.0	Error
Jan 6, 2026 23:34	Aman \| अमन	CPPg++13.3.0	Error
Jan 6, 2026 10:04	Rajarshi Basu	CPPg++13.3.0	Error
Jan 6, 2026 10:03	Rajarshi Basu	CPPg++13.3.0	Error
Jan 6, 2026 09:58	Rajarshi Basu	CPPg++13.3.0	Error
Jan 6, 2026 09:57	Rajarshi Basu	CPPg++13.3.0	Success	3,294
Jan 6, 2026 02:27	zielaj	CPPclang++18.1.3	Success	4,032
Jan 6, 2026 02:25	zielaj	CPPclang++18.1.3	Success	3,193
Jan 6, 2026 02:24	zielaj	CPPclang++18.1.3	Success	3,301
Jan 6, 2026 02:22	zielaj	CPPclang++18.1.3	Success	3,513
Jan 6, 2026 02:14	zielaj	CPPclang++18.1.3	Error
Jan 6, 2026 02:11	zielaj	CPPclang++18.1.3	Error
Jan 6, 2026 02:09	zielaj	CPPclang++18.1.3	Error
Jan 5, 2026 18:41	Павел Ратманов	CPPg++13.3.0	Success	46,143
Jan 5, 2026 18:39	Павел Ратманов	CPPg++13.3.0	Success	68,869
Jan 5, 2026 18:38	Павел Ратманов	CPPg++13.3.0	Success	67,897
Jan 5, 2026 18:36	Павел Ратманов	CPPg++13.3.0	Success	40,061+100.44 RP
Jan 5, 2026 18:35	Павел Ратманов	CPPg++13.3.0	Success	68,437
Jan 5, 2026 18:18	Павел Ратманов	CPPg++13.3.0	Success	111,410
Jan 5, 2026 18:17	Павел Ратманов	CPPg++13.3.0	Success	118,309
Jan 5, 2026 18:12	Павел Ратманов	CPPg++13.3.0	Success	170,692
Jan 5, 2026 18:08	Павел Ратманов	CPPclang++18.1.3	Success	170,903
Jan 5, 2026 18:06	Павел Ратманов	CPPclang++18.1.3	Success	161,832

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