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.

Back to listDec 22, 2025 11:09

Rajarshi Basu

Score: 4,859

Success

Source Code

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Dec 22, 2025 11:08	4,815	185,421,415	155,889,000	2,997,000	2,506,752
2	Dec 22, 2025 11:09	4,819	183,085,295	156,036,000	3,000,000	2,285,568
3	Dec 22, 2025 11:09	4,825	185,022,596	156,231,000	3,004,000	2,285,568
4	Dec 22, 2025 11:09	4,828	181,191,732	156,318,000	3,006,000	2,285,568
5	Dec 22, 2025 11:08	4,829	180,839,764	157,354,000	2,004,000	2,502,656
6	Dec 22, 2025 11:09	4,837	187,233,914	155,642,000	3,990,000	2,285,568
7	Dec 22, 2025 11:09	4,838	186,188,278	156,657,000	2,993,000	2,285,568
8	Dec 22, 2025 11:09	4,838	185,143,538	157,650,000	1,995,000	2,502,656
9	Dec 22, 2025 11:08	4,839	184,133,050	157,703,000	1,996,000	2,387,968
10	Dec 22, 2025 11:08	4,842	184,331,589	156,776,000	2,995,000	2,285,568
11	Dec 22, 2025 11:09	4,842	185,850,287	156,796,000	2,996,000	2,285,568
12	Dec 22, 2025 11:09	4,844	184,731,002	157,843,000	1,998,000	2,387,968
13	Dec 22, 2025 11:08	4,845	182,473,984	156,874,000	2,997,000	2,285,568
14	Dec 22, 2025 11:08	4,854	187,096,330	158,169,000	2,002,000	2,392,064
15	Dec 22, 2025 11:09	4,854	185,917,135	158,166,000	2,002,000	2,387,968
16	Dec 22, 2025 11:09	4,855	186,714,898	157,208,000	3,003,000	2,387,968
17	Dec 22, 2025 11:07	4,858	186,527,645	157,319,000	3,006,000	2,285,568
18	Dec 31, 2025 04:39	4,858	192,914,885	157,318,000	3,006,000	2,281,472
19	Dec 23, 2025 09:53	4,859	187,391,931	158,351,000	2,004,000	2,285,568
20	Dec 23, 2025 09:53	4,868	185,147,406	158,661,000	1,995,000	2,392,064
21	Dec 22, 2025 11:07	4,869	188,797,781	157,687,000	2,994,000	2,285,568
22	Dec 22, 2025 11:09	4,873	185,948,275	157,827,000	2,996,000	2,387,968
23	Dec 31, 2025 04:39	4,875	180,362,264	157,888,000	2,997,000	2,277,376
24	Dec 22, 2025 11:09	4,875	189,385,264	157,878,000	2,997,000	2,383,872
25	Dec 23, 2025 09:53	4,878	183,676,801	157,975,000	2,999,000	2,375,680
26	Dec 22, 2025 11:09	4,884	188,645,312	158,161,000	3,003,000	2,502,656
27	Dec 22, 2025 11:08	4,885	185,158,359	158,196,000	3,003,000	2,412,544
28	Dec 22, 2025 11:07	4,885	187,842,403	158,203,000	3,003,000	2,285,568
29	Dec 22, 2025 11:08	4,941	186,740,544	159,067,000	4,001,000	2,281,472
30	Dec 31, 2025 04:39	4,976	189,248,080	161,215,000	3,004,000	2,392,064
31	Dec 22, 2025 11:09	5,017	190,028,128	162,584,000	2,992,000	2,383,872
32	Dec 22, 2025 11:09	5,025	187,391,797	162,837,000	2,997,000	2,383,872
33	Dec 22, 2025 11:09	5,027	191,080,813	162,880,000	2,997,000	2,383,872
34	Dec 22, 2025 11:09	5,036	194,082,381	163,177,000	3,003,000	2,379,776
35	Dec 22, 2025 11:09	5,038	191,633,857	163,249,000	3,004,000	2,285,568
36	Dec 22, 2025 11:08	5,054	190,310,254	163,796,000	2,996,000	2,396,160

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