B'You were dreaming that you are traveling to a planet named Planetforces on your personal spaceship. Unfortunately, its piloting system was corrupted and now you need to fix it in order to reach Planetforces. Space can be represented as the XY plane. You are starting at point (0, 0) , and Planetforces is located in point (p_x, p_y) . The piloting system of your spaceship follows its list of orders which can be represented as a string s . The system reads s from left to right. Suppose you are at point (x, y) and current order is s_i : Since string s could be corrupted, there is a possibility that you won 't reach Planetforces in the end. Fortunately, you can delete some orders from s but you can 't change their positions. Can you delete several orders (possibly, zero) from s in such a way, that you 'll reach Planetforces after the system processes all orders? The first line contains a single integer t ( 1 <= t <= 1000 ) -- the number of test cases. Each test case consists of two lines. The first line in each test case contains two integers p_x and p_y ( -10^5 <= p_x, p_y <= 10^5 ; (p_x, p_y) neq (0, 0) ) -- the coordinates of Planetforces (p_x, p_y) . The second line contains the string s ( 1 <= |s| <= 10^5 : |s| is the length of string s ) -- the list of orders. It is guaranteed that the sum of |s| over all test cases does not exceed 10^5 . For each test case, print "YES" if you can delete several orders (possibly, zero) from s in such a way, that you 'll reach Planetforces. Otherwise, print "NO". You can print each letter in any case (upper or lower). In the first case, you don 't need to modify s , since the given s will bring you to Planetforces. In the second case, you can delete orders s_2 , s_3 , s_4 , s_6 , s_7 and s_8 , so s becomes equal to "UR". In the third test '...