Diagonal String

AtCoder

IDabc090_a

Time2000ms

Memory256MB

Difficulty—

We have a $3×3$ square grid, where each square contains a lowercase English letters. The letter in the square at the $i$\-th row from the top and $j$\-th column from the left is $c_{ij}$. Print the string of length $3$ that can be obtained by concatenating the letters in the squares on the diagonal connecting the top-left and bottom-right corner of the grid, from the top-left to bottom-right. ## Constraints * Input consists of lowercase English letters. ## Input Input is given from Standard Input in the following format: $c_{11}c_{12}c_{13}$ $c_{21}c_{22}c_{23}$ $c_{31}c_{32}c_{33}$ [samples]

Samples

Input #1

ant
obe
rec

Output #1

abc

The letters in the squares on the diagonal connecting the top-left and bottom-right corner of the grid are `a`, `b` and `c` from top-right to bottom-left. Concatenate these letters and print `abc`.

Input #2

edu
cat
ion

Output #2

ean

API Response (JSON)

{
  "problem": {
    "name": "Diagonal String",
    "description": {
      "content": "We have a $3×3$ square grid, where each square contains a lowercase English letters. The letter in the square at the $i$\\-th row from the top and $j$\\-th column from the left is $c_{ij}$. Print the st",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc090_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "We have a $3×3$ square grid, where each square contains a lowercase English letters. The letter in the square at the $i$\\-th row from the top and $j$\\-th column from the left is $c_{ij}$.\nPrint the st...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments