Score : 200 points
A ball will bounce along a number line, making N + 1 bounces. It will make the first bounce at coordinate D_1 = 0, and the i-th bounce (2 \leq i \leq N+1) at coordinate D_i = D_{i-1} + L_{i-1}.
How many times will the ball make a bounce where the coordinate is at most X?
Input is given from Standard Input in the following format:
N X L_1 L_2 ... L_{N-1} L_N
Print the number of times the ball will make a bounce where the coordinate is at most X.
3 6 3 4 5
2
The ball will make a bounce at the coordinates 0, 3, 7 and 12, among which two are less than or equal to 6.
4 9 3 3 3 3
4
The ball will make a bounce at the coordinates 0, 3, 6, 9 and 12, among which four are less than or equal to 9.