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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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 1, 2026 19:21

zielaj

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 4, 2026 23:08	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 4, 2026 23:09	0	10,942,623	1,521,000	1,520,000	2,121,728	expected "16384 ", got "349 "	stderr
2	Jul 4, 2026 23:09	0	10,984,411	1,040,000	2,202,000	2,121,728	expected "16384 ", got "349 "	stderr
3	Jul 4, 2026 23:09	0	11,413,538	1,049,000	2,110,000	2,121,728	expected "16384 ", got "349 "	stderr
4	Jan 1, 2026 17:10	3,387	135,054,032	110,785,000	998,000	2,412,544
5	Jan 1, 2026 17:10	3,392	136,013,490	109,930,000	1,998,000	2,416,640
6	Jan 1, 2026 17:14	3,392	132,354,357	109,941,000	1,998,000	2,273,280
7	Jan 1, 2026 17:49	3,399	139,439,757	110,159,000	2,002,000	2,416,640
8	Jan 1, 2026 17:19	3,410	141,083,787	111,531,000	1,004,000	2,420,736
9	Jan 1, 2026 17:10	3,418	137,031,324	110,809,000	1,996,000	2,273,280
10	Jan 1, 2026 17:10	3,426	136,021,293	111,055,000	2,000,000	2,502,656
11	Jan 1, 2026 18:07	3,430	134,493,660	110,173,000	3,004,000	2,273,280
12	Jan 1, 2026 17:10	3,446	141,708,686	111,716,000	1,994,000	2,420,736
13	Jan 1, 2026 17:14	3,454	135,878,160	112,970,000	999,000	2,416,640
14	Jan 1, 2026 17:19	3,455	136,199,884	113,019,000	1,000,000	2,506,752
15	Jan 1, 2026 17:17	3,457	139,451,277	112,066,000	2,001,000	2,424,832
16	Jan 1, 2026 17:10	3,464	139,952,106	112,322,000	2,005,000	2,535,424
17	Jan 1, 2026 18:07	3,468	135,931,525	114,428,000	0	2,535,424
18	Jan 1, 2026 19:21	3,473	140,265,971	113,606,000	1,005,000	2,412,544
19	Jan 1, 2026 17:17	3,482	135,224,469	112,903,000	1,998,000	2,416,640
20	Jan 1, 2026 17:49	3,498	139,196,911	115,447,000	0	2,412,544
21	Jan 1, 2026 17:17	3,500	142,626,191	112,486,000	3,013,000	2,535,424
22	Jan 1, 2026 17:19	3,506	136,035,823	113,692,000	1,994,000	2,535,424
23	Jan 1, 2026 17:14	3,514	139,596,823	113,965,000	1,999,000	2,412,544
24	Jan 1, 2026 17:19	3,521	142,289,091	114,199,000	2,003,000	2,412,544
25	Jan 1, 2026 17:10	3,537	146,278,172	115,731,000	997,000	2,273,280
26	Jan 1, 2026 17:10	3,548	140,470,316	115,079,000	2,001,000	2,420,736
27	Jan 1, 2026 17:14	3,556	140,374,462	115,352,000	2,006,000	2,420,736
28	Jan 1, 2026 17:19	3,561	143,745,829	116,514,000	1,004,000	2,408,448
29	Jan 1, 2026 19:21	3,566	142,017,785	114,689,000	2,991,000	2,408,448
30	Jan 1, 2026 17:19	3,573	142,883,044	114,925,000	2,998,000	2,535,424
31	Jan 1, 2026 17:14	3,590	145,759,563	117,478,000	1,004,000	2,416,640
32	Jan 1, 2026 17:19	3,595	140,544,168	118,651,000	0	2,273,280
33	Jan 1, 2026 17:49	3,597	150,433,851	116,697,000	1,994,000	2,273,280
34	Jan 1, 2026 18:07	3,598	147,428,178	116,734,000	1,995,000	2,531,328
35	Jan 1, 2026 19:21	3,598	144,062,619	117,752,000	997,000	2,408,448
36	Jan 1, 2026 17:14	3,600	144,323,111	117,789,000	998,000	2,273,280
37	Jan 1, 2026 17:19	3,601	140,607,829	116,849,000	1,997,000	2,506,752
38	Jan 1, 2026 17:19	3,603	148,093,394	117,897,000	999,000	2,535,424
39	Jan 1, 2026 17:10	3,850	149,660,954	124,049,000	3,001,000	2,273,280

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