CF1299C.Water Balance

普及/提高-

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题目描述

There are nn water tanks in a row, ii -th of them contains aia_i liters of water. The tanks are numbered from 11 to nn from left to right.

You can perform the following operation: choose some subsegment [l,r][l, r] ( 1lrn1\le l \le r \le n ), and redistribute water in tanks l,l+1,,rl, l+1, \dots, r evenly. In other words, replace each of al,al+1,,ara_l, a_{l+1}, \dots, a_r by al+al+1++arrl+1\frac{a_l + a_{l+1} + \dots + a_r}{r-l+1} . For example, if for volumes [1,3,6,7][1, 3, 6, 7] you choose l=2,r=3l = 2, r = 3 , new volumes of water will be [1,4.5,4.5,7][1, 4.5, 4.5, 7] . You can perform this operation any number of times.

What is the lexicographically smallest sequence of volumes of water that you can achieve?

As a reminder:

A sequence aa is lexicographically smaller than a sequence bb of the same length if and only if the following holds: in the first (leftmost) position where aa and bb differ, the sequence aa has a smaller element than the corresponding element in bb .

输入格式

The first line contains an integer nn ( 1n1061 \le n \le 10^6 ) — the number of water tanks.

The second line contains nn integers a1,a2,,ana_1, a_2, \dots, a_n ( 1ai1061 \le a_i \le 10^6 ) — initial volumes of water in the water tanks, in liters.

Because of large input, reading input as doubles is not recommended.

输出格式

Print the lexicographically smallest sequence you can get. In the ii -th line print the final volume of water in the ii -th tank.

Your answer is considered correct if the absolute or relative error of each aia_i does not exceed 10910^{-9} .

Formally, let your answer be a1,a2,,ana_1, a_2, \dots, a_n , and the jury's answer be b1,b2,,bnb_1, b_2, \dots, b_n . Your answer is accepted if and only if aibimax(1,bi)109\frac{|a_i - b_i|}{\max{(1, |b_i|)}} \le 10^{-9} for each ii .

输入输出样例

  • 输入#1

    4
    7 5 5 7

    输出#1

    5.666666667
    5.666666667
    5.666666667
    7.000000000
  • 输入#2

    5
    7 8 8 10 12

    输出#2

    7.000000000
    8.000000000
    8.000000000
    10.000000000
    12.000000000
  • 输入#3

    10
    3 9 5 5 1 7 5 3 8 7

    输出#3

    3.000000000
    5.000000000
    5.000000000
    5.000000000
    5.000000000
    5.000000000
    5.000000000
    5.000000000
    7.500000000
    7.500000000

说明/提示

In the first sample, you can get the sequence by applying the operation for subsegment [1,3][1, 3] .

In the second sample, you can't get any lexicographically smaller sequence.

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