Score : 300 points
Given is a string S of length N-1.
Each character in S is <
or >
.
A sequence of N non-negative integers, a_1,a_2,\cdots,a_N, is said to be good when the following condition is satisfied for all i (1 \leq i \leq N-1):
<
: a_i<a_{i+1}>
: a_i>a_{i+1}Find the minimum possible sum of the elements of a good sequence of N non-negative integers.
<
and >
.Input is given from Standard Input in the following format:
S
Find the minimum possible sum of the elements of a good sequence of N non-negative integers.
<>>
3
a=(0,2,1,0) is a good sequence whose sum is 3. There is no good sequence whose sum is less than 3.
<>>><<><<<<<>>><
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