CF1363A.Odd Selection

普及/提高-

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题目描述

Shubham has an array aa of size nn , and wants to select exactly xx elements from it, such that their sum is odd. These elements do not have to be consecutive. The elements of the array are not guaranteed to be distinct.

Tell him whether he can do so.

输入格式

The first line of the input contains a single integer tt (1t100)(1\le t \le 100) — the number of test cases. The description of the test cases follows.

The first line of each test case contains two integers nn and xx (1xn1000)(1 \le x \le n \le 1000) — the length of the array and the number of elements you need to choose.

The next line of each test case contains nn integers a1,a2,,ana_1, a_2, \dots, a_n (1ai1000)(1 \le a_i \le 1000) — elements of the array.

输出格式

For each test case, print "Yes" or "No" depending on whether it is possible to choose xx elements such that their sum is odd.

You may print every letter in any case you want.

输入输出样例

  • 输入#1

    5
    1 1
    999
    1 1
    1000
    2 1
    51 50
    2 2
    51 50
    3 3
    101 102 103

    输出#1

    Yes
    No
    Yes
    Yes
    No

说明/提示

For 11 st case: We must select element 999999 , and the sum is odd.

For 22 nd case: We must select element 10001000 , so overall sum is not odd.

For 33 rd case: We can select element 5151 .

For 44 th case: We must select both elements 5050 and 5151 — so overall sum is odd.

For 55 th case: We must select all elements — but overall sum is not odd.

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