Batting Average

AtCoder

IDabc274_a

Time2000ms

Memory256MB

Difficulty—

> Takahashi is making a computer baseball game. > He will write a program that shows a batter's batting average with a specified number of digits. There are integers $A$ and $B$, which satisfy $1 \leq A \leq 10$ and $0 \leq B \leq A$. Let $S$ be the string obtained as follows. * Round off $\dfrac{B}{A}$ to three decimal digits, then write the integer part ($1$ digit), `.` (the decimal point), and the decimal part ($3$ digits) in this order, with trailing zeros. For example, if $A=7$ and $B=4$, then $\dfrac{B}{A} = \dfrac{4}{7} = 0.571428\dots$ rounded off to three decimal digits is $0.571$. Thus, $S$ is `0.571`. You are given $A$ and $B$ as the input and asked to print $S$. ## Constraints * $1 \leq A \leq 10$ * $0 \leq B \leq A$ * $A$ and $B$ are integers. ## Input The input is given from Standard Input in the following format: $A$ $B$ [samples]

Samples

Input #1

7 4

Output #1

0.571

As explained in the Problem Statement, $\dfrac{B}{A} = \dfrac{4}{7} = 0.571428\dots$ rounded off to three decimal digits is $0.571$. Thus, $S$ is `0.571`.

Input #2

7 3

Output #2

0.429

$\dfrac{B}{A} = \dfrac{3}{7} = 0.428571\dots$ rounded off to three decimal digits is $0.429$. (Note that it got rounded up.)  
Thus, $S$ is `0.429`.

Input #3

2 1

Output #3

0.500

$\dfrac{B}{A} = \dfrac{1}{2} = 0.5$ rounded off to three decimal digits is again $0.5$.  
Thus, $S$ is `0.500`. Note that it must have three decimal places.

Input #4

10 10

Output #4

1.000

Input #5

1 0

Output #5

0.000

API Response (JSON)

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  "problem": {
    "name": "Batting Average",
    "description": {
      "content": "> Takahashi is making a computer baseball game.   > He will write a program that shows a batter's batting average with a specified number of digits. There are integers $A$ and $B$, which satisfy $1 \\",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc274_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "> Takahashi is making a computer baseball game.  \n> He will write a program that shows a batter's batting average with a specified number of digits.\n\nThere are integers $A$ and $B$, which satisfy $1 \\...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

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