Three-letter acronym

AtCoder
IDabc059_a
Time2000ms
Memory256MB
Difficulty
You are given three words $s_1$, $s_2$ and $s_3$, each composed of lowercase English letters, with spaces in between. Print the acronym formed from the uppercased initial letters of the words. ## Constraints * $s_1$, $s_2$ and $s_3$ are composed of lowercase English letters. * $1 ≤ |s_i| ≤ 10 (1≤i≤3)$ ## Input Input is given from Standard Input in the following format: $s_1$ $s_2$ $s_3$ [samples]
Samples
Input #1
atcoder beginner contest
Output #1
ABC

The initial letters of `atcoder`, `beginner` and `contest` are `a`, `b` and `c`. Uppercase and concatenate them to obtain `ABC`.
Input #2
resident register number
Output #2
RRN
Input #3
k nearest neighbor
Output #3
KNN
Input #4
async layered coding
Output #4
ALC
API Response (JSON)
{
  "problem": {
    "name": "Three-letter acronym",
    "description": {
      "content": "You are given three words $s_1$, $s_2$ and $s_3$, each composed of lowercase English letters, with spaces in between. Print the acronym formed from the uppercased initial letters of the words.",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc059_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "You are given three words $s_1$, $s_2$ and $s_3$, each composed of lowercase English letters, with spaces in between. Print the acronym formed from the uppercased initial letters of the words.\n\n## Con...",
      "is_translate": false,
      "language": "English"
    }
  ]
}
Full JSON Raw Segments