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 13, 2025 18:09

Rajarshi Basu

Score: 8,364

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 13, 2025 18:09	8,322	303,424,105	265,626,000	8,987,000	2,502,656
2	Dec 13, 2025 18:09	8,323	307,250,458	267,656,000	6,991,000	2,334,720
3	Dec 13, 2025 18:09	8,331	301,043,581	265,928,000	8,997,000	2,486,272
4	Dec 13, 2025 18:09	8,343	303,945,722	268,297,000	7,007,000	2,519,040
5	Dec 13, 2025 18:09	8,348	307,017,760	267,486,000	7,984,000	2,506,752
6	Dec 13, 2025 18:09	8,349	309,685,115	265,521,000	9,982,000	2,498,560
7	Dec 13, 2025 18:09	8,350	302,533,381	266,562,000	8,985,000	2,375,680
8	Dec 13, 2025 18:09	8,350	305,001,900	265,580,000	9,984,000	2,502,656
9	Dec 13, 2025 18:09	8,351	303,974,361	267,582,000	7,987,000	2,506,752
10	Dec 13, 2025 18:09	8,351	301,435,203	264,592,000	10,983,000	2,453,504
11	Dec 13, 2025 18:09	8,353	304,981,611	267,668,000	7,990,000	2,355,200
12	Dec 13, 2025 18:09	8,357	307,547,957	266,779,000	8,992,000	2,441,216
13	Dec 13, 2025 18:09	8,358	300,477,104	269,809,000	5,995,000	2,273,280
14	Dec 13, 2025 18:09	8,358	308,139,147	264,826,000	10,992,000	2,351,104
15	Dec 13, 2025 18:09	8,359	299,644,446	265,848,000	9,994,000	2,510,848
16	Dec 13, 2025 18:09	8,360	302,115,826	266,878,000	8,995,000	2,519,040
17	Dec 13, 2025 18:09	8,362	307,760,247	268,953,000	6,998,000	2,506,752
18	Dec 13, 2025 18:09	8,362	306,947,119	265,951,000	9,998,000	2,482,176
19	Dec 13, 2025 18:09	8,364	302,503,528	266,010,000	10,000,000	2,285,568
20	Dec 13, 2025 18:09	8,367	302,133,007	265,093,000	11,003,000	2,269,184
21	Dec 13, 2025 18:09	8,368	302,030,317	267,137,000	9,004,000	2,498,560
22	Dec 13, 2025 18:09	8,368	304,439,332	269,131,000	7,003,000	2,359,296
23	Dec 13, 2025 18:09	8,369	300,798,961	267,185,000	9,006,000	2,510,848
24	Dec 13, 2025 18:09	8,369	301,993,536	267,178,000	9,006,000	2,498,560
25	Dec 13, 2025 18:09	8,378	300,411,945	265,482,000	10,978,000	2,363,392
26	Dec 13, 2025 18:09	8,379	306,149,420	268,530,000	7,986,000	2,506,752
27	Dec 13, 2025 18:09	8,380	305,269,721	265,570,000	10,982,000	2,387,968
28	Dec 13, 2025 18:09	8,380	300,655,908	266,553,000	9,983,000	2,510,848
29	Dec 13, 2025 18:09	8,381	306,779,904	268,592,000	7,987,000	2,506,752
30	Dec 13, 2025 18:09	8,383	305,845,908	269,657,000	6,991,000	2,506,752
31	Dec 13, 2025 18:09	8,391	301,184,431	265,906,000	10,996,000	2,392,064
32	Dec 13, 2025 18:09	8,392	303,053,629	267,940,000	8,997,000	2,359,296
33	Dec 13, 2025 18:09	8,415	301,355,276	269,711,000	7,991,000	2,506,752
34	Dec 13, 2025 18:09	8,421	302,535,263	268,898,000	8,996,000	2,502,656
35	Dec 13, 2025 18:09	8,453	310,759,651	270,947,000	7,998,000	2,510,848
36	Dec 13, 2025 18:09	8,495	306,271,037	266,378,000	13,967,000	2,510,848

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