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 listMar 18, 2026 01:32

Josu San MartinScore: 4,207Success

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 18, 2026 01:30	4,064	154,812,111	132,096,000	2,001,000	2,400,256
2	Mar 18, 2026 01:30	4,071	161,145,960	133,327,000	1,002,000	2,289,664
3	Mar 18, 2026 01:30	4,072	155,883,714	133,373,000	1,002,000	2,392,064
4	Mar 18, 2026 01:35	4,074	160,111,649	133,423,000	1,003,000	2,289,664
5	Mar 18, 2026 01:30	4,075	158,591,554	134,482,000	0	2,404,352
6	Mar 18, 2026 01:30	4,076	162,160,027	133,511,000	1,003,000	2,396,160
7	Mar 18, 2026 01:35	4,076	168,138,908	133,495,000	1,003,000	2,392,064
8	Mar 18, 2026 01:30	4,082	167,556,293	132,697,000	1,995,000	2,289,664
9	Mar 18, 2026 01:30	4,082	160,369,707	132,709,000	1,995,000	2,400,256
10	Mar 18, 2026 01:35	4,082	162,286,083	133,698,000	997,000	2,289,664
11	Mar 18, 2026 01:30	4,085	160,834,174	133,817,000	998,000	2,506,752
12	Mar 18, 2026 02:42	4,086	157,490,552	133,831,000	998,000	2,289,664
13	Mar 18, 2026 01:43	4,088	162,798,835	132,916,000	1,998,000	2,396,160
14	Mar 18, 2026 02:42	4,090	160,755,352	133,964,000	999,000	2,514,944
15	Mar 18, 2026 01:43	4,091	161,317,112	133,004,000	2,000,000	2,289,664
16	Mar 18, 2026 02:42	4,093	158,198,608	134,075,000	1,000,000	2,289,664
17	Mar 18, 2026 01:43	4,098	157,793,398	134,220,000	1,001,000	2,392,064
18	Mar 18, 2026 01:30	4,099	160,009,050	135,270,000	0	2,400,256
19	Mar 18, 2026 01:35	4,206	166,561,959	136,815,000	1,997,000	2,289,664
20	Mar 18, 2026 01:34	4,207	164,489,735	137,834,000	998,000	2,387,968
21	Mar 18, 2026 01:34	4,209	164,791,348	137,900,000	999,000	2,289,664
22	Mar 18, 2026 01:34	4,212	164,074,552	137,985,000	999,000	2,387,968
23	Mar 18, 2026 01:35	4,216	162,923,047	137,123,000	2,001,000	2,289,664
24	Mar 18, 2026 01:35	4,237	166,586,200	138,819,000	998,000	2,289,664
25	Mar 18, 2026 01:33	4,265	168,418,715	137,762,000	2,994,000	2,285,568
26	Mar 18, 2026 01:33	4,268	165,839,432	138,845,000	1,997,000	2,285,568
27	Mar 18, 2026 01:33	4,271	162,682,764	138,932,000	1,999,000	2,486,272
28	Mar 18, 2026 01:32	4,272	165,972,331	139,978,000	999,000	2,285,568
29	Mar 18, 2026 01:32	4,283	161,199,918	140,329,000	1,002,000	2,465,792
30	Mar 18, 2026 01:35	4,293	166,893,556	140,677,000	997,000	2,285,568
31	Mar 18, 2026 01:35	4,294	171,498,411	139,692,000	1,995,000	2,285,568
32	Mar 18, 2026 01:32	4,295	170,600,760	139,747,000	1,996,000	2,285,568
33	Mar 18, 2026 01:33	4,370	169,082,414	143,223,000	1,001,000	2,289,664
34	Mar 18, 2026 01:33	4,377	174,943,633	142,426,000	2,006,000	2,412,544
35	Mar 18, 2026 01:33	4,398	170,701,542	142,129,000	3,002,000	2,338,816
36	Mar 18, 2026 01:35	4,409	168,356,550	143,511,000	1,993,000	2,285,568
37	Mar 18, 2026 01:32	4,462	169,512,588	146,238,000	1,001,000	2,285,568
38	Mar 18, 2026 01:32	4,467	168,911,865	145,395,000	2,005,000	2,387,968
39	Mar 18, 2026 01:32	4,470	171,334,106	147,499,000	0	2,506,752

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