CF1227D1.Optimal Subsequences (Easy Version)

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题目描述

This is the easier version of the problem. In this version 1n,m1001 \le n, m \le 100 . You can hack this problem only if you solve and lock both problems.

You are given a sequence of integers a=[a1,a2,,an]a=[a_1,a_2,\dots,a_n] of length nn . Its subsequence is obtained by removing zero or more elements from the sequence aa (they do not necessarily go consecutively). For example, for the sequence a=[11,20,11,33,11,20,11]a=[11,20,11,33,11,20,11] :

  • [11,20,11,33,11,20,11][11,20,11,33,11,20,11] , [11,20,11,33,11,20][11,20,11,33,11,20] , [11,11,11,11][11,11,11,11] , [20][20] , [33,20][33,20] are subsequences (these are just some of the long list);
  • [40][40] , [33,33][33,33] , [33,20,20][33,20,20] , [20,20,11,11][20,20,11,11] are not subsequences.

Suppose that an additional non-negative integer kk ( 1kn1 \le k \le n ) is given, then the subsequence is called optimal if:

  • it has a length of kk and the sum of its elements is the maximum possible among all subsequences of length kk ;
  • and among all subsequences of length kk that satisfy the previous item, it is lexicographically minimal.

Recall that the sequence b=[b1,b2,,bk]b=[b_1, b_2, \dots, b_k] is lexicographically smaller than the sequence c=[c1,c2,,ck]c=[c_1, c_2, \dots, c_k] if the first element (from the left) in which they differ less in the sequence bb than in cc . Formally: there exists tt ( 1tk1 \le t \le k ) such that b1=c1b_1=c_1 , b2=c2b_2=c_2 , ..., bt1=ct1b_{t-1}=c_{t-1} and at the same time bt<ctb_t<c_t . For example:

  • [10,20,20][10, 20, 20] lexicographically less than [10,21,1][10, 21, 1] ,
  • [7,99,99][7, 99, 99] is lexicographically less than [10,21,1][10, 21, 1] ,
  • [10,21,0][10, 21, 0] is lexicographically less than [10,21,1][10, 21, 1] .

You are given a sequence of a=[a1,a2,,an]a=[a_1,a_2,\dots,a_n] and mm requests, each consisting of two numbers kjk_j and posjpos_j ( 1kn1 \le k \le n , 1posjkj1 \le pos_j \le k_j ). For each query, print the value that is in the index posjpos_j of the optimal subsequence of the given sequence aa for k=kjk=k_j .

For example, if n=4n=4 , a=[10,20,30,20]a=[10,20,30,20] , kj=2k_j=2 , then the optimal subsequence is [20,30][20,30] — it is the minimum lexicographically among all subsequences of length 22 with the maximum total sum of items. Thus, the answer to the request kj=2k_j=2 , posj=1pos_j=1 is the number 2020 , and the answer to the request kj=2k_j=2 , posj=2pos_j=2 is the number 3030 .

输入格式

The first line contains an integer nn ( 1n1001 \le n \le 100 ) — the length of the sequence aa .

The second line contains elements of the sequence aa : integer numbers a1,a2,,ana_1, a_2, \dots, a_n ( 1ai1091 \le a_i \le 10^9 ).

The third line contains an integer mm ( 1m1001 \le m \le 100 ) — the number of requests.

The following mm lines contain pairs of integers kjk_j and posjpos_j ( 1kn1 \le k \le n , 1posjkj1 \le pos_j \le k_j ) — the requests.

输出格式

Print mm integers r1,r2,,rmr_1, r_2, \dots, r_m ( 1rj1091 \le r_j \le 10^9 ) one per line: answers to the requests in the order they appear in the input. The value of rjr_j should be equal to the value contained in the position posjpos_j of the optimal subsequence for k=kjk=k_j .

输入输出样例

  • 输入#1

    3
    10 20 10
    6
    1 1
    2 1
    2 2
    3 1
    3 2
    3 3
    

    输出#1

    20
    10
    20
    10
    20
    10
    
  • 输入#2

    7
    1 2 1 3 1 2 1
    9
    2 1
    2 2
    3 1
    3 2
    3 3
    1 1
    7 1
    7 7
    7 4
    

    输出#2

    2
    3
    2
    3
    2
    3
    1
    1
    3
    

说明/提示

In the first example, for a=[10,20,10]a=[10,20,10] the optimal subsequences are:

  • for k=1k=1 : [20][20] ,
  • for k=2k=2 : [10,20][10,20] ,
  • for k=3k=3 : [10,20,10][10,20,10] .
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