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 listFeb 21, 2026 03:14

Josu San MartinScore: 4,313Success

Source Code

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Challenge History

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 21, 2026 03:20	4,298	161,359,550	140,831,000	998,000	2,289,664
2	Feb 21, 2026 03:21	4,299	162,968,169	140,861,000	999,000	2,514,944
3	Feb 21, 2026 03:20	4,301	166,738,604	139,939,000	1,999,000	2,400,256
4	Feb 21, 2026 03:16	4,301	169,028,737	139,932,000	1,999,000	2,289,664
5	Feb 21, 2026 03:21	4,303	172,421,679	140,013,000	2,000,000	2,289,664
6	Feb 21, 2026 03:20	4,303	165,901,765	139,990,000	1,999,000	2,289,664
7	Feb 21, 2026 03:23	4,303	164,573,977	141,012,000	1,000,000	2,289,664
8	Feb 21, 2026 03:20	4,305	165,198,549	140,072,000	2,001,000	2,392,064
9	Feb 21, 2026 03:22	4,307	169,002,950	140,136,000	2,001,000	2,289,664
10	Feb 21, 2026 03:20	4,307	166,886,905	139,119,000	3,002,000	2,289,664
11	Feb 21, 2026 03:19	4,307	175,375,424	141,119,000	1,000,000	2,289,664
12	Feb 21, 2026 03:25	4,307	166,190,289	140,132,000	2,001,000	2,289,664
13	Feb 21, 2026 03:19	4,308	167,447,228	141,163,000	1,001,000	2,289,664
14	Feb 21, 2026 03:26	4,308	165,587,188	139,174,000	3,003,000	2,289,664
15	Feb 21, 2026 03:16	4,309	169,945,358	139,203,000	3,004,000	2,289,664
16	Feb 21, 2026 03:20	4,309	168,527,475	140,207,000	2,002,000	2,289,664
17	Feb 21, 2026 03:20	4,309	166,395,593	141,195,000	1,001,000	2,289,664
18	Feb 21, 2026 03:18	4,310	167,274,445	141,235,000	1,001,000	2,289,664
19	Feb 21, 2026 03:20	4,310	169,245,718	140,223,000	2,003,000	2,289,664
20	Feb 21, 2026 03:19	4,311	166,117,878	142,268,000	0	2,293,760
21	Feb 21, 2026 03:16	4,312	168,192,856	141,289,000	1,002,000	2,523,136
22	Feb 21, 2026 03:20	4,312	165,823,691	142,283,000	0	2,396,160
23	Feb 21, 2026 03:24	4,312	167,744,651	142,293,000	0	2,289,664
24	Feb 21, 2026 02:01	4,313	170,172,585	142,327,000	0	2,404,352
25	Feb 21, 2026 03:26	4,313	166,315,928	140,336,000	2,004,000	2,289,664
26	Feb 21, 2026 03:24	4,313	165,938,966	140,312,000	2,004,000	2,289,664
27	Feb 21, 2026 03:22	4,313	170,369,192	142,314,000	0	2,289,664
28	Feb 21, 2026 03:23	4,313	167,160,507	141,339,000	1,002,000	2,289,664
29	Feb 21, 2026 03:25	4,314	167,665,744	140,354,000	2,005,000	2,289,664
30	Feb 21, 2026 03:19	4,314	164,851,715	141,353,000	1,002,000	2,392,064
31	Feb 21, 2026 03:16	4,314	171,199,184	141,375,000	1,002,000	2,404,352
32	Feb 21, 2026 03:19	4,315	174,714,905	140,389,000	2,005,000	2,289,664
33	Feb 21, 2026 03:19	4,315	169,428,653	142,399,000	0	2,400,256
34	Feb 21, 2026 03:25	4,316	174,262,012	141,431,000	1,003,000	2,400,256
35	Feb 21, 2026 03:26	4,316	174,552,916	141,417,000	1,002,000	2,289,664
36	Feb 21, 2026 03:21	4,316	169,307,110	140,414,000	2,005,000	2,281,472
37	Feb 21, 2026 03:16	4,316	172,449,356	139,431,000	3,009,000	2,392,064
38	Feb 21, 2026 02:01	4,316	168,099,952	142,432,000	0	2,289,664
39	Feb 21, 2026 03:18	4,317	168,834,375	141,456,000	996,000	2,289,664
40	Feb 21, 2026 03:18	4,317	174,468,966	141,447,000	1,003,000	2,510,848
41	Feb 21, 2026 03:24	4,317	174,589,653	140,443,000	2,006,000	2,412,544
42	Feb 21, 2026 02:01	4,318	169,240,161	142,499,000	0	2,289,664
43	Feb 21, 2026 03:16	4,324	169,407,905	139,699,000	2,993,000	2,289,664
44	Feb 21, 2026 03:13	4,324	168,423,146	141,682,000	997,000	2,396,160
45	Feb 21, 2026 03:13	4,328	165,866,964	140,813,000	1,997,000	2,400,256
46	Feb 21, 2026 03:23	4,332	167,509,047	141,971,000	999,000	2,289,664
47	Feb 21, 2026 03:13	4,337	163,988,772	140,107,000	3,002,000	2,396,160
48	Feb 21, 2026 03:22	4,346	173,317,265	141,405,000	2,005,000	2,289,664
49	Feb 21, 2026 03:14	4,353	173,332,636	141,664,000	1,995,000	2,289,664
50	Feb 21, 2026 03:14	4,377	174,035,590	143,444,000	1,003,000	2,289,664
51	Feb 21, 2026 03:14	4,394	173,311,163	143,013,000	2,000,000	2,482,176

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