OddString

AtCoder

IDabc072_b

Time2000ms

Memory256MB

Difficulty—

You are given a string $s$ consisting of lowercase English letters. Extract all the characters in the odd-indexed positions and print the string obtained by concatenating them. Here, the leftmost character is assigned the index $1$. ## Constraints * Each character in $s$ is a lowercase English letter. * $1≤|s|≤10^5$ ## Input The input is given from Standard Input in the following format: $s$ [samples]

Samples

Input #1

atcoder

Output #1

acdr

Extract the first character `a`, the third character `c`, the fifth character `d` and the seventh character `r` to obtain `acdr`.

Input #2

aaaa

Output #2

aa

Input #3

Output #3

Input #4

fukuokayamaguchi

Output #4

fkoaaauh

API Response (JSON)

{
  "problem": {
    "name": "OddString",
    "description": {
      "content": "You are given a string $s$ consisting of lowercase English letters. Extract all the characters in the odd-indexed positions and print the string obtained by concatenating them. Here, the leftmost char",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc072_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "You are given a string $s$ consisting of lowercase English letters. Extract all the characters in the odd-indexed positions and print the string obtained by concatenating them. Here, the leftmost char...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments