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 2, 2026 19:24

zielajScore: 3,273Success

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 2, 2026 20:04	3,176	134,300,149	103,810,000	998,000	2,420,736
2	Jan 2, 2026 19:24	3,188	132,099,987	103,195,000	2,003,000	2,412,544
3	Jan 2, 2026 17:23	3,192	130,401,393	104,334,000	1,003,000	2,273,280
4	Jan 2, 2026 19:25	3,196	128,339,164	104,468,000	1,004,000	2,535,424
5	Jan 2, 2026 17:35	3,206	129,977,428	105,783,000	0	2,416,640
6	Jan 2, 2026 17:23	3,206	130,346,751	103,793,000	1,996,000	2,420,736
7	Jan 2, 2026 17:23	3,210	131,659,940	104,938,000	999,000	2,416,640
8	Jan 2, 2026 17:21	3,216	134,668,487	105,122,000	1,001,000	2,420,736
9	Jan 2, 2026 20:04	3,220	132,374,176	105,273,000	1,002,000	2,273,280
10	Jan 2, 2026 17:23	3,225	135,221,999	104,428,000	2,008,000	2,531,328
11	Jan 2, 2026 17:22	3,230	138,947,155	105,580,000	1,005,000	2,535,424
12	Jan 2, 2026 17:23	3,237	125,697,157	103,839,000	2,995,000	2,506,752
13	Jan 2, 2026 19:26	3,243	131,252,244	105,021,000	2,000,000	2,408,448
14	Jan 2, 2026 19:25	3,249	129,577,828	105,214,000	2,004,000	2,424,832
15	Jan 2, 2026 20:40	3,257	126,863,326	105,465,000	2,008,000	2,273,280
16	Jan 2, 2026 19:25	3,265	135,231,220	104,767,000	2,993,000	2,416,640
17	Jan 2, 2026 19:25	3,265	136,372,772	105,744,000	1,995,000	2,379,776
18	Jan 2, 2026 20:04	3,266	134,402,682	107,775,000	0	2,420,736
19	Jan 2, 2026 19:25	3,266	133,072,037	105,781,000	1,995,000	2,535,424
20	Jan 2, 2026 17:21	3,267	131,483,496	105,805,000	1,996,000	2,273,280
21	Jan 2, 2026 17:22	3,269	131,655,147	104,881,000	2,996,000	2,273,280
22	Jan 2, 2026 19:26	3,269	130,773,623	105,878,000	1,997,000	2,420,736
23	Jan 2, 2026 19:25	3,273	137,174,391	105,016,000	3,000,000	2,420,736
24	Jan 2, 2026 20:04	3,275	135,768,658	106,075,000	2,001,000	2,412,544
25	Jan 2, 2026 19:25	3,275	132,523,146	106,060,000	2,001,000	2,289,664
26	Jan 2, 2026 20:40	3,281	129,024,659	106,274,000	2,005,000	2,416,640
27	Jan 2, 2026 20:04	3,281	130,967,965	107,287,000	1,002,000	2,420,736
28	Jan 2, 2026 20:04	3,282	137,624,351	105,284,000	3,008,000	2,535,424
29	Jan 2, 2026 17:23	3,287	131,642,173	107,467,000	1,004,000	2,416,640
30	Jan 2, 2026 17:23	3,288	130,366,083	107,490,000	1,004,000	2,535,424
31	Jan 2, 2026 17:35	3,292	140,367,377	108,642,000	0	2,531,328
32	Jan 2, 2026 17:22	3,307	137,742,215	107,132,000	2,002,000	2,510,848
33	Jan 2, 2026 19:24	3,312	130,705,000	107,289,000	2,005,000	2,535,424
34	Jan 2, 2026 20:04	3,320	137,433,699	107,560,000	2,010,000	2,412,544
35	Jan 2, 2026 19:25	3,325	131,628,845	107,746,000	1,995,000	2,416,640
36	Jan 2, 2026 20:04	3,327	135,966,669	108,809,000	998,000	2,420,736
37	Jan 2, 2026 17:23	3,342	137,451,387	108,283,000	2,005,000	2,424,832
38	Jan 2, 2026 20:04	3,347	130,074,770	109,444,000	1,004,000	2,412,544
39	Jan 2, 2026 19:24	3,362	131,360,944	108,944,000	1,998,000	2,416,640
40	Jan 2, 2026 17:21	3,367	132,093,526	109,107,000	2,001,000	2,535,424
41	Jan 2, 2026 19:26	3,369	131,561,637	109,175,000	2,003,000	2,424,832
42	Jan 2, 2026 17:23	3,399	137,561,248	111,161,000	1,001,000	2,416,640
43	Jan 2, 2026 17:35	3,403	136,802,713	109,305,000	3,008,000	2,416,640
44	Jan 2, 2026 20:40	3,465	136,468,550	112,329,000	2,005,000	2,506,752
45	Jan 2, 2026 19:25	3,698	144,525,831	121,037,000	1,000,000	2,416,640

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