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CF2014A.Robin Helps
Robin Helps
There is a little bit of the outlaw in everyone, and a little bit of the hero too.
The heroic outlaw Robin Hood is famous for taking from the rich and giving to the poor.
Robin encounters people starting from the -st and ending with the -th. The -th person has gold. If , Robin will take all gold, and if , Robin will give gold if he has any. Robin starts with gold.
Find out how many people Robin gives gold to.
Input
The first line of the input contains a single integer () — the number of test cases.
The first line of each test case contains two integers , () — the number of people and the threshold at which Robin Hood takes the gold.
The second line of each test case contains integers () — the gold of each person.
Output
For each test case, output a single integer, the number of people that will get gold from Robin Hood.
Note
In the first test case, Robin takes gold from the first person and gives a gold to the second person.
In the second test case, Robin takes gold and gives gold to each of the next people.
In the third test case, Robin takes gold and so only gives gold to other people.
Samples
4
2 2
2 0
3 2
3 0 0
6 2
0 3 0 0 0 0
2 5
5 4
1
2
3
0
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