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 listJan 10, 2026 22:52

Josu San MartinScore: 4,384Success

Source Code

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 11, 2026 03:43	4,372	167,807,301	144,267,000	0	2,396,160
2	Jan 11, 2026 03:43	4,375	167,316,966	144,375,000	0	2,289,664
3	Jan 10, 2026 22:53	4,375	168,360,442	142,385,000	2,005,000	2,289,664
4	Jan 10, 2026 19:06	4,376	170,739,300	143,390,000	1,002,000	2,289,664
5	Jan 10, 2026 22:53	4,376	173,030,876	144,406,000	0	2,289,664
6	Jan 10, 2026 22:53	4,376	175,591,379	144,410,000	0	2,289,664
7	Jan 11, 2026 00:32	4,376	170,892,902	143,394,000	1,002,000	2,289,664
8	Jan 10, 2026 22:53	4,378	169,819,807	142,479,000	2,006,000	2,289,664
9	Jan 10, 2026 19:06	4,379	178,284,941	144,493,000	0	2,400,256
10	Jan 11, 2026 00:32	4,379	175,398,673	144,500,000	0	2,387,968
11	Jan 11, 2026 03:43	4,380	169,273,351	142,539,000	2,007,000	2,289,664
12	Jan 10, 2026 22:53	4,380	168,308,291	141,551,000	2,990,000	2,510,848
13	Jan 11, 2026 03:43	4,382	168,219,773	143,609,000	1,004,000	2,404,352
14	Jan 11, 2026 03:43	4,383	169,475,239	143,650,000	997,000	2,400,256
15	Jan 10, 2026 22:53	4,383	179,263,818	142,652,000	1,995,000	2,408,448
16	Jan 10, 2026 22:19	4,384	170,095,796	142,671,000	1,995,000	2,408,448
17	Jan 10, 2026 19:06	4,384	171,373,887	143,664,000	997,000	2,387,968
18	Jan 10, 2026 19:06	4,384	171,660,407	141,681,000	2,993,000	2,400,256
19	Jan 11, 2026 03:43	4,384	170,996,181	143,659,000	997,000	2,289,664
20	Jan 10, 2026 19:06	4,384	169,503,815	143,679,000	997,000	2,392,064
21	Jan 10, 2026 19:06	4,384	173,269,450	142,685,000	1,995,000	2,400,256
22	Jan 10, 2026 22:53	4,384	175,223,914	143,679,000	997,000	2,289,664
23	Jan 10, 2026 22:19	4,384	175,659,784	143,687,000	997,000	2,392,064
24	Jan 10, 2026 22:19	4,384	177,792,983	142,679,000	1,995,000	2,289,664
25	Jan 10, 2026 22:19	4,384	167,992,492	143,670,000	997,000	2,289,664
26	Jan 10, 2026 22:19	4,384	170,486,267	142,669,000	1,995,000	2,289,664
27	Jan 11, 2026 03:43	4,385	169,685,530	142,695,000	1,995,000	2,289,664
28	Jan 10, 2026 22:52	4,385	166,798,674	140,725,000	3,992,000	2,400,256
29	Jan 11, 2026 03:43	4,385	173,976,944	143,696,000	997,000	2,400,256
30	Jan 10, 2026 22:19	4,385	168,100,640	143,711,000	997,000	2,289,664
31	Jan 10, 2026 19:06	4,385	167,009,892	142,715,000	1,996,000	2,289,664
32	Jan 10, 2026 22:53	4,386	175,050,458	141,732,000	2,994,000	2,404,352
33	Jan 11, 2026 00:32	4,386	165,356,398	142,743,000	1,996,000	2,404,352
34	Jan 10, 2026 19:06	4,388	167,554,392	142,795,000	1,997,000	2,400,256
35	Jan 10, 2026 22:19	4,389	174,750,478	140,855,000	3,995,000	2,408,448
36	Jan 10, 2026 22:19	4,389	168,652,714	142,852,000	1,997,000	2,404,352
37	Jan 10, 2026 19:06	4,389	168,816,034	141,827,000	2,996,000	2,289,664
38	Jan 10, 2026 22:52	4,391	176,514,899	143,892,000	999,000	2,289,664
39	Jan 10, 2026 22:53	4,395	167,450,468	143,033,000	2,000,000	2,289,664
40	Jan 10, 2026 22:53	4,395	170,132,048	143,034,000	2,000,000	2,400,256
41	Jan 10, 2026 22:52	4,399	165,639,790	144,171,000	1,001,000	2,289,664
42	Jan 10, 2026 22:53	4,400	173,892,947	142,207,000	3,004,000	2,392,064
43	Jan 10, 2026 22:52	4,403	172,018,622	145,294,000	0	2,400,256
44	Jan 10, 2026 22:52	4,404	170,546,704	143,336,000	2,004,000	2,289,664
45	Jan 10, 2026 22:19	4,414	175,534,127	143,681,000	1,995,000	2,396,160
46	Jan 10, 2026 22:53	4,415	171,773,515	145,679,000	0	2,289,664
47	Jan 10, 2026 22:52	4,417	172,850,629	144,751,000	998,000	2,289,664
48	Jan 11, 2026 03:43	4,435	173,080,044	145,342,000	1,002,000	2,289,664

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