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 3, 2026 10:34

zielaj

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 4, 2026 10:15	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 4, 2026 10:16	0	10,972,452	1,042,000	2,199,000	2,121,728	expected "16384 ", got "349 "	stderr
2	Jul 4, 2026 10:16	0	11,023,171	1,045,000	2,189,000	2,121,728	expected "16384 ", got "349 "	stderr
3	Jul 4, 2026 10:16	0	11,208,112	1,041,000	2,232,000	2,121,728	expected "16384 ", got "349 "	stderr
4	Jan 3, 2026 10:34	3,077	120,632,193	100,527,000	1,005,000	2,420,736
5	Jan 2, 2026 23:50	3,085	129,342,526	99,808,000	1,996,000	2,408,448
6	Jan 3, 2026 10:15	3,121	127,773,959	100,994,000	1,999,000	2,416,640
7	Jan 2, 2026 23:44	3,134	122,287,477	102,430,000	1,004,000	2,318,336
8	Jan 3, 2026 10:14	3,138	129,004,378	102,553,000	1,005,000	2,412,544
9	Jan 3, 2026 10:15	3,142	135,218,541	101,681,000	1,993,000	2,416,640
10	Jan 3, 2026 10:34	3,147	129,750,834	101,853,000	1,997,000	2,424,832
11	Jan 3, 2026 10:25	3,148	126,481,550	101,890,000	1,997,000	2,412,544
12	Jan 3, 2026 10:15	3,151	130,187,000	101,975,000	1,999,000	2,412,544
13	Jan 2, 2026 23:44	3,157	128,026,481	102,191,000	2,003,000	2,494,464
14	Jan 3, 2026 10:25	3,161	123,971,343	102,316,000	2,006,000	2,535,424
15	Jan 3, 2026 10:15	3,163	124,812,450	101,363,000	3,010,000	2,416,640
16	Jan 2, 2026 23:49	3,182	126,795,198	103,991,000	999,000	2,535,424
17	Jan 3, 2026 10:16	3,187	127,197,712	103,154,000	2,002,000	2,531,328
18	Jan 3, 2026 10:15	3,188	129,448,694	103,193,000	2,003,000	2,416,640
19	Jan 3, 2026 10:25	3,189	126,795,969	103,225,000	2,004,000	2,535,424
20	Jan 2, 2026 23:50	3,190	130,037,157	103,278,000	2,005,000	2,408,448
21	Jan 2, 2026 23:50	3,193	124,224,975	103,359,000	2,006,000	2,506,752
22	Jan 2, 2026 23:49	3,196	128,525,312	103,462,000	2,008,000	2,506,752
23	Jan 2, 2026 23:50	3,205	128,027,161	105,778,000	0	2,506,752
24	Jan 2, 2026 23:50	3,205	136,142,822	103,776,000	1,995,000	2,420,736
25	Jan 3, 2026 10:34	3,205	133,498,476	104,754,000	997,000	2,273,280
26	Jan 3, 2026 10:14	3,206	133,444,852	102,793,000	2,993,000	2,424,832
27	Jan 3, 2026 10:34	3,208	131,428,268	103,872,000	1,997,000	2,412,544
28	Jan 3, 2026 10:15	3,212	126,322,086	103,996,000	1,999,000	2,420,736
29	Jan 3, 2026 10:16	3,218	129,447,579	104,205,000	2,003,000	2,383,872
30	Jan 3, 2026 10:15	3,220	125,906,038	104,264,000	2,005,000	2,535,424
31	Jan 3, 2026 10:17	3,221	129,974,724	104,278,000	2,005,000	2,535,424
32	Jan 3, 2026 10:17	3,221	135,547,008	104,287,000	2,005,000	2,473,984
33	Jan 3, 2026 10:14	3,224	129,795,961	105,398,000	1,003,000	2,535,424
34	Jan 2, 2026 23:44	3,229	134,231,343	105,559,000	1,005,000	2,535,424
35	Jan 3, 2026 10:15	3,230	133,819,738	106,600,000	0	2,420,736
36	Jan 3, 2026 10:34	3,240	130,942,127	105,906,000	999,000	2,273,280
37	Jan 3, 2026 10:15	3,252	129,120,318	106,329,000	1,003,000	2,535,424
38	Jan 2, 2026 23:50	3,255	128,360,892	106,424,000	1,004,000	2,535,424
39	Jan 3, 2026 10:34	3,256	128,507,427	104,450,000	3,013,000	2,535,424
40	Jan 3, 2026 10:16	3,267	128,414,863	105,818,000	1,996,000	2,273,280
41	Jan 3, 2026 10:17	3,372	136,109,009	109,269,000	2,004,000	2,412,544
42	Jan 2, 2026 23:49	3,417	137,914,285	112,749,000	0	2,416,640

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