A978.Haircut--Gold

普及+/提高

USACO

通过率:0%

时间限制:1.00s

内存限制:128MB

题目描述

Tired of his stubborn cowlick, Farmer John decides to get a haircut. He has
NN (1N1051\le N\le 10^5) strands of hair arranged in a line, and strand ii is
initially AiA_i micrometers long (0AiN0\le A_i\le N). Ideally, he wants his hair
to be monotonically increasing in length, so he defines the "badness" of his
hair as the number of inversions: pairs (i,j)(i,j) such that i<ji < j and Ai>AjA_i > A_j.
For each of j=0,1,,N1j=0,1,\ldots,N-1, FJ would like to know the badness of his hair
if all strands with length greater than jj are decreased to length exactly
jj.
(Fun fact: the average human head does indeed have about 10510^5 hairs!)

输入格式

The first line contains NN.
The second line contains A1,A2,,AN.A_1,A_2,\ldots,A_N.

输出格式

For each of j=0,1,,N1j=0,1,\ldots,N-1, output the badness of FJ's hair on a new line.
Note that the large size of integers involved in this problem may require the
use of 64-bit integer data types (e.g., a "long long" in C/C++).

输入输出样例

  • 输入#1

    5
    5 2 3 3 0
    

    输出#1

    0
    4
    4
    5
    7
    

说明/提示

The fourth line of output describes the number of inversions when FJ's hairs
are decreased to length 3. Then A=[3,2,3,3,0]A=[3,2,3,3,0] has five inversions:
A1>A2,A1>A5,A2>A5,A3>A5,A_1>A_2,\,A_1>A_5,\,A_2>A_5,\,A_3>A_5, and A4>A5A_4>A_5.

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