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 19, 2025 18:11

Rajarshi Basu

Score: 5,990

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 19, 2025 18:10	5,913	215,926,862	189,126,000	6,004,000	2,412,544
2	Dec 19, 2025 18:21	5,918	221,946,575	190,301,000	5,007,000	2,396,160
3	Dec 19, 2025 18:12	5,929	222,796,834	189,681,000	5,989,000	2,428,928
4	Dec 19, 2025 18:11	5,931	222,560,859	189,737,000	5,991,000	2,342,912
5	Dec 19, 2025 18:12	5,934	217,384,415	190,828,000	4,995,000	2,519,040
6	Dec 19, 2025 18:12	5,947	221,994,267	190,241,000	6,007,000	2,363,392
7	Dec 19, 2025 18:12	5,955	226,703,135	189,531,000	6,982,000	2,453,504
8	Dec 19, 2025 18:12	5,957	223,656,632	192,574,000	3,991,000	2,342,912
9	Dec 19, 2025 18:12	5,957	226,497,785	189,588,000	6,984,000	2,342,912
10	Dec 19, 2025 18:12	5,957	222,465,286	189,610,000	6,985,000	2,314,240
11	Dec 19, 2025 18:12	5,960	220,052,128	192,694,000	3,993,000	2,514,944
12	Dec 19, 2025 18:12	5,966	220,102,388	190,882,000	5,996,000	2,289,664
13	Dec 19, 2025 18:21	5,967	220,168,073	190,912,000	5,997,000	2,514,944
14	Dec 19, 2025 18:21	5,969	221,031,527	192,980,000	3,999,000	2,424,832
15	Dec 19, 2025 18:12	5,973	218,862,978	190,117,000	7,004,000	2,359,296
16	Dec 19, 2025 18:21	5,979	223,689,126	191,305,000	6,009,000	2,514,944
17	Dec 19, 2025 18:21	5,980	224,187,019	195,323,000	2,003,000	2,510,848
18	Dec 19, 2025 18:12	5,983	224,198,906	191,454,000	5,982,000	2,334,720
19	Dec 19, 2025 18:12	5,990	230,242,231	193,688,000	3,993,000	2,519,040
20	Dec 19, 2025 18:10	5,991	219,529,530	192,714,000	4,992,000	2,281,472
21	Dec 19, 2025 18:21	5,993	221,983,065	190,777,000	6,991,000	2,519,040
22	Dec 19, 2025 18:12	5,995	219,801,583	192,851,000	4,996,000	2,490,368
23	Dec 19, 2025 18:12	6,001	220,722,756	192,022,000	6,000,000	2,281,472
24	Dec 19, 2025 18:12	6,003	231,132,157	193,103,000	5,002,000	2,453,504
25	Dec 19, 2025 18:12	6,003	224,481,087	193,113,000	5,002,000	2,383,872
26	Dec 19, 2025 18:11	6,003	221,055,757	191,097,000	7,003,000	2,510,848
27	Dec 19, 2025 18:21	6,005	223,703,353	193,166,000	5,004,000	2,412,544
28	Dec 19, 2025 18:12	6,012	225,878,361	191,414,000	6,978,000	2,494,464
29	Dec 19, 2025 18:12	6,016	225,133,946	192,540,000	5,985,000	2,510,848
30	Dec 19, 2025 18:10	6,019	222,281,298	193,644,000	4,990,000	2,510,848
31	Dec 19, 2025 18:21	6,023	226,928,017	194,775,000	3,995,000	2,514,944
32	Dec 19, 2025 18:12	6,037	221,688,877	196,203,000	3,003,000	2,310,144
33	Dec 19, 2025 18:12	6,050	223,741,106	193,658,000	5,989,000	2,416,640
34	Dec 19, 2025 18:21	6,210	229,471,000	197,921,000	6,997,000	2,510,848
35	Dec 19, 2025 18:12	6,225	234,637,774	199,451,000	5,983,000	2,379,776
36	Dec 19, 2025 18:11	6,506	234,506,538	207,717,000	6,990,000	2,338,816

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