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g0401_0500.s0495_teemo_attacking.readme.md Maven / Gradle / Ivy

495\. Teemo Attacking

Easy

Our hero Teemo is attacking an enemy Ashe with poison attacks! When Teemo attacks Ashe, Ashe gets poisoned for a exactly `duration` seconds. More formally, an attack at second `t` will mean Ashe is poisoned during the **inclusive** time interval `[t, t + duration - 1]`. If Teemo attacks again **before** the poison effect ends, the timer for it is **reset**, and the poison effect will end `duration` seconds after the new attack.

You are given a **non-decreasing** integer array `timeSeries`, where `timeSeries[i]` denotes that Teemo attacks Ashe at second `timeSeries[i]`, and an integer `duration`.

Return _the **total** number of seconds that Ashe is poisoned_.

**Example 1:**

**Input:** timeSeries = [1,4], duration = 2

**Output:** 4

**Explanation:** Teemo's attacks on Ashe go as follows: - At second 1, Teemo attacks, and Ashe is poisoned for seconds 1 and 2. - At second 4, Teemo attacks, and Ashe is poisoned for seconds 4 and 5. Ashe is poisoned for seconds 1, 2, 4, and 5, which is 4 seconds in total.

**Example 2:**

**Input:** timeSeries = [1,2], duration = 2

**Output:** 3

**Explanation:** 

Teemo's attacks on Ashe go as follows: 

- At second 1, Teemo attacks, and Ashe is poisoned for seconds 1 and 2. 

- At second 2 however, Teemo attacks again and resets the poison timer. Ashe is poisoned for seconds 2 and 3. Ashe is poisoned for seconds 1, 2, and 3, which is 3 seconds in total.

**Constraints:**

*   1 <= timeSeries.length <= 104
*   0 <= timeSeries[i], duration <= 107
*   `timeSeries` is sorted in **non-decreasing** order.