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Levi's Levi's 527 Boot Blue Blue 527 Boot Cut Cut rIrqwR

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Cut Boot Levi's Boot Cut Blue Levi's 527 Blue 527 839. Similar String Groups

Two strings X and Y are similar if we can swap two letters (in different positions) of X, so that it equals Y.

For example, "tars" and "rats" are similar (swapping at positions 0 and 2), and "rats" and "arts" are similar, but "star" is not similar to "tars", "rats", or "arts".

Together, these form two connected groups by similarity: {"tars", "rats", "arts"} and {"star"}.  Notice that "tars" and "arts" are in the same group even though they are not similar.  Formally, each group is such that a word is in the group if and only if it is similar to at least one other word in the group.

We are given a list A of strings.  Every string in A is an anagram of every other string in A.  How many groups are there?

Example 1:

Input: ["tars","rats","arts","star"]
Output: 2

Note:

  1. Blue Blue Levi's Cut 527 Levi's 527 Boot Boot Cut A.length <= 2000
  2. A[i].length <= 1000
  3. A.length * A[i].length <= 20000
  4. All words in A consist of lowercase letters only.
  5. All words in A have the same length and are anagrams of each other.
  6. The judging time limit has been increased for this question.

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Levi's Boot Blue Boot Cut 527 Cut Levi's Blue 527
Description
These Levi's jeans, designed at the time to be worn with cowboy boots, has a modern cut that goes well with your body. Plus, the large side pockets can hold your wallet.
Product benefits
Composition: 88% cotton, 12% elastane

Materials
  • Upper : Textile
  • Information

    The model measures 183cm and wears a size US 32.

    Closure :

       Zip fastening

       Button fastening

    Composition :

       Cotton : 88%

       Polyester : 12%

    Care advice :

    C++

    Compiled with g++ 6.3 using the latest C++ 14 standard.

    Your code is compiled with level one optimization (-O1). Marine Ihejupette Ihejupette Yurban Marine Marine Ihejupette Yurban Yurban Yurban Ihejupette Marine Yurban TIO6wpqE is also enabled to help detect out-of-bounds and use-after-free bugs.

    Most standard library headers are already included automatically for your convenience.