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 21, 2026 23:34

Josu San MartinScore: 4,315Success

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 21, 2026 23:33	4,294	167,133,763	140,693,000	997,000	2,400,256
2	Jan 21, 2026 23:33	4,299	164,818,728	139,869,000	1,998,000	2,392,064
3	Jan 21, 2026 23:33	4,299	165,050,939	140,856,000	998,000	2,392,064
4	Jan 21, 2026 23:31	4,300	164,775,873	139,911,000	1,998,000	2,289,664
5	Jan 21, 2026 23:32	4,301	163,395,939	139,932,000	1,999,000	2,293,760
6	Jan 21, 2026 23:33	4,302	166,093,976	139,951,000	1,999,000	2,293,760
7	Jan 21, 2026 23:31	4,302	167,348,285	140,967,000	999,000	2,293,760
8	Jan 21, 2026 23:33	4,303	165,992,972	139,984,000	1,999,000	2,293,760
9	Jan 21, 2026 23:33	4,303	170,589,797	140,995,000	999,000	2,387,968
10	Jan 21, 2026 23:32	4,304	165,983,340	140,046,000	2,000,000	2,293,760
11	Jan 21, 2026 23:32	4,304	168,094,220	141,020,000	1,000,000	2,396,160
12	Jan 21, 2026 23:34	4,305	165,280,111	140,051,000	2,000,000	2,404,352
13	Jan 21, 2026 23:31	4,306	173,267,687	141,114,000	1,000,000	2,289,664
14	Jan 21, 2026 23:33	4,306	165,550,052	141,114,000	1,000,000	2,293,760
15	Jan 21, 2026 23:36	4,306	175,727,331	141,094,000	1,000,000	2,293,760
16	Jan 21, 2026 23:32	4,306	165,484,305	140,100,000	2,001,000	2,293,760
17	Jan 21, 2026 23:31	4,308	165,503,256	140,152,000	2,002,000	2,289,664
18	Jan 21, 2026 23:34	4,308	167,612,995	140,152,000	2,002,000	2,293,760
19	Jan 21, 2026 23:31	4,308	165,924,729	140,175,000	2,002,000	2,289,664
20	Jan 21, 2026 23:36	4,308	166,757,701	140,150,000	2,002,000	2,404,352
21	Jan 21, 2026 23:33	4,310	165,039,330	141,225,000	1,001,000	2,289,664
22	Jan 21, 2026 23:30	4,310	167,335,226	141,222,000	1,001,000	2,289,664
23	Jan 21, 2026 23:32	4,311	169,662,217	141,256,000	1,001,000	2,293,760
24	Jan 21, 2026 23:31	4,313	175,461,054	142,317,000	0	2,293,760
25	Jan 21, 2026 23:31	4,313	169,953,866	141,330,000	1,002,000	2,289,664
26	Jan 21, 2026 23:33	4,313	163,645,285	141,340,000	1,002,000	2,400,256
27	Jan 21, 2026 23:31	4,313	163,071,941	141,343,000	1,002,000	2,396,160
28	Jan 21, 2026 23:30	4,315	169,266,788	141,406,000	1,002,000	2,400,256
29	Jan 21, 2026 23:32	4,315	172,790,942	141,384,000	1,002,000	2,396,160
30	Jan 21, 2026 23:36	4,317	173,300,126	141,472,000	1,003,000	2,396,160
31	Jan 21, 2026 23:33	4,317	167,692,826	141,445,000	1,003,000	2,408,448
32	Jan 21, 2026 23:33	4,318	173,100,553	142,502,000	0	2,400,256
33	Jan 21, 2026 23:33	4,318	168,379,752	142,487,000	0	2,293,760
34	Jan 21, 2026 23:31	4,323	172,363,743	140,675,000	1,995,000	2,289,664
35	Jan 21, 2026 23:31	4,324	171,580,015	141,684,000	997,000	2,293,760
36	Jan 21, 2026 23:33	4,324	175,883,210	140,689,000	1,995,000	2,293,760
37	Jan 21, 2026 23:33	4,324	167,325,571	140,690,000	1,995,000	2,400,256
38	Jan 21, 2026 23:32	4,325	171,279,170	141,725,000	998,000	2,293,760
39	Jan 21, 2026 23:32	4,326	169,245,707	139,770,000	2,995,000	2,281,472
40	Jan 21, 2026 23:34	4,327	169,528,097	140,782,000	1,996,000	2,293,760
41	Jan 21, 2026 23:32	4,329	167,246,679	139,863,000	2,997,000	2,289,664
42	Jan 21, 2026 23:30	4,331	167,109,899	140,915,000	1,998,000	2,400,256
43	Jan 21, 2026 23:33	4,344	173,013,009	142,365,000	1,002,000	2,289,664
44	Jan 21, 2026 23:31	4,510	176,886,747	146,819,000	2,011,000	2,482,176
45	Jan 21, 2026 23:31	4,716	186,808,965	152,626,000	2,992,000	2,396,160
46	Jan 21, 2026 23:32	5,165	204,293,329	166,447,000	3,986,000	2,273,280
47	Jan 21, 2026 23:32	5,176	191,782,394	166,804,000	3,995,000	2,383,872
48	Jan 21, 2026 23:32	5,200	195,459,628	165,623,000	5,986,000	2,277,376
49	Jan 21, 2026 23:34	7,682	278,536,390	248,511,000	4,990,000	2,310,144
50	Jan 21, 2026 23:34	7,689	277,715,853	248,746,000	4,994,000	2,383,872
51	Jan 21, 2026 23:34	7,694	279,308,496	249,920,000	3,998,000	2,387,968
52	Jan 21, 2026 23:34	9,509	337,285,413	313,794,000	0	2,293,760
53	Jan 21, 2026 23:34	9,555	339,706,214	314,303,000	997,000	2,293,760
54	Jan 21, 2026 23:34	9,581	345,595,988	315,162,000	1,000,000	2,293,760

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