CodeCraft-19 and Codeforces Round 537 (Div. 2)
B
Average Superhero Gang Power
Codeforces
1700
原题
← AC →
翻译中…

Every superhero has been given a power value by the Felicity Committee. The avengers crew wants to maximize the average power of the superheroes in their team by performing certain operations.

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Initially, there are $n$ superheroes in avengers team having powers $a_1, a_2, \ldots, a_n$, respectively. In one operation, they can remove one superhero from their team (if there are at least two) or they can increase the power of a superhero by $1$. They can do at most $m$ operations. Also, on a particular superhero at most $k$ operations can be done.

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Can you help the avengers team to maximize the average power of their crew?

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Input

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The first line contains three integers $n$, $k$ and $m$ ($1 \le n \le 10^{5}$, $1 \le k \le 10^{5}$, $1 \le m \le 10^{7}$) — the number of superheroes, the maximum number of times you can increase power of a particular superhero, and the total maximum number of operations.

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The second line contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \le a_i \le 10^{6}$) — the initial powers of the superheroes in the cast of avengers.

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Output

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Output a single number — the maximum final average power.

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Your answer is considered correct if its absolute or relative error does not exceed $10^{-6}$.

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Formally, let your answer be $a$, and the jury's answer be $b$. Your answer is accepted if and only if $\frac{|a - b|}{\max{(1, |b|)}} \le 10^{-6}$.

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Note

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In the first example, the maximum average is obtained by deleting the first element and increasing the second element four times.

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In the second sample, one of the ways to achieve maximum average is to delete the first and the third element and increase the second and the fourth elements by $2$ each.

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样例

Input #1
2 4 6
4 7
Output #1
11.00000000000000000000
InputCopy OutputCopy
Input #2
4 2 6
1 3 2 3
Output #2
5.00000000000000000000
InputCopy OutputCopy
题目信息
题号
1111B
时间限制
1 s
内存限制
256 MB
标签
暴力
模拟
数学

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