# LeetCode - 2110. Number of Smooth Descent Periods of a Stock
### 題目網址：https://leetcode.com/problems/number-of-smooth-descent-periods-of-a-stock/
###### tags: `LeetCode` `Medium` `動態規劃（Dynamic Programming）`

/*
    -LeetCode format-
    Problem: 2110. Number of Smooth Descent Periods of a Stock
    Difficulty: Medium
    
    by Inversionpeter
*/



static const auto Initialize = []{
    ios::sync_with_stdio(false); cin.tie(nullptr);
    return nullptr;
}();

class Solution {
public:
    long long getDescentPeriods(vector<int>& prices) {
        long long total = 1, nowLength = 1;
        for (int i = 1; i != prices.size(); ++i) {
            if (prices[i] + 1 != prices[i - 1])
                nowLength = 0;
            ++nowLength;
            total += nowLength;
        }
        return total;
    }
};