Dubious Document 2

AtCoder

IDabc076_c

Time2000ms

Memory256MB

Difficulty—

E869120 found a chest which is likely to contain treasure. However, the chest is locked. In order to open it, he needs to enter a string $S$ consisting of lowercase English letters. He also found a string $S'$, which turns out to be the string $S$ with some of its letters (possibly all or none) replaced with `?`. One more thing he found is a sheet of paper with the following facts written on it: * Condition 1: The string $S$ contains a string $T$ as a contiguous substring. * Condition 2: $S$ is the lexicographically smallest string among the ones that satisfy Condition 1. Print the string $S$. If such a string does not exist, print `UNRESTORABLE`. ## Constraints * $1 \leq |S'|, |T| \leq 50$ * $S'$ consists of lowercase English letters and `?`. * $T$ consists of lowercase English letters. ## Input Input is given from Standard Input in the following format: $S$ $T'$ [samples]

Samples

Input #1

?tc????
coder

Output #1

atcoder

There are $26$ strings that satisfy Condition 1: `atcoder`, `btcoder`, `ctcoder`,..., `ztcoder`. Among them, the lexicographically smallest is `atcoder`, so we can say $S = $ `atcoder`.

Input #2

??p??d??
abc

Output #2

UNRESTORABLE

There is no string that satisfies Condition 1, so the string $S$ does not exist.

API Response (JSON)

{
  "problem": {
    "name": "Dubious Document 2",
    "description": {
      "content": "E869120 found a chest which is likely to contain treasure.   However, the chest is locked. In order to open it, he needs to enter a string $S$ consisting of lowercase English letters.   He also found ",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc076_c"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "E869120 found a chest which is likely to contain treasure.  \nHowever, the chest is locked. In order to open it, he needs to enter a string $S$ consisting of lowercase English letters.  \nHe also found ...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

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