Substring

AtCoder

IDabc177_b

Time2000ms

Memory256MB

Difficulty—

Given are two strings $S$ and $T$. Let us change some of the characters in $S$ so that $T$ will be a substring of $S$. At least how many characters do we need to change? Here, a substring is a consecutive subsequence. For example, `xxx` is a substring of `yxxxy`, but not a substring of `xxyxx`. ## Constraints * The lengths of $S$ and $T$ are each at least $1$ and at most $1000$. * The length of $T$ is at most that of $S$. * $S$ and $T$ consist of lowercase English letters. ## Input Input is given from Standard Input in the following format: $S$ $T$ [samples]

Samples

Input #1

cabacc
abc

Output #1

1

For example, changing the fourth character `a` in $S$ to `c` will match the second through fourth characters in $S$ to $T$.
Since $S$ itself does not have $T$ as its substring, this number of changes - one - is the minimum needed.

Input #2

codeforces
atcoder

Output #2

API Response (JSON)

{
  "problem": {
    "name": "Substring",
    "description": {
      "content": "Given are two strings $S$ and $T$. Let us change some of the characters in $S$ so that $T$ will be a substring of $S$. At least how many characters do we need to change? Here, a substring is a consecu",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc177_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Given are two strings $S$ and $T$.\nLet us change some of the characters in $S$ so that $T$ will be a substring of $S$.\nAt least how many characters do we need to change?\nHere, a substring is a consecu...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments