3522 - Calculate Score After Performing Instructions.

Medium

You are given two arrays, instructions and values, both of size n.

You need to simulate a process based on the following rules:

• You start at the first instruction at index i = 0 with an initial score of 0.

• If instructions[i] is "add":

• If instructions[i] is "jump":

The process ends when you either:

• Go out of bounds (i.e., i < 0 or i >= n), or

• Attempt to revisit an instruction that has been previously executed. The revisited instruction is not executed.

Return your score at the end of the process.

Example 1:

Input: instructions = "jump","add","add","jump","add","jump", values = 2,1,3,1,-2,-3

Output: 1

Explanation:

Simulate the process starting at instruction 0:

• At index 0: Instruction is "jump", move to index 0 + 2 = 2.

• At index 2: Instruction is "add", add values[2] = 3 to your score and move to index 3. Your score becomes 3.

• At index 3: Instruction is "jump", move to index 3 + 1 = 4.

• At index 4: Instruction is "add", add values[4] = -2 to your score and move to index 5. Your score becomes 1.

• At index 5: Instruction is "jump", move to index 5 + (-3) = 2.

• At index 2: Already visited. The process ends.

Example 2:

Input: instructions = "jump","add","add", values = 3,1,1

Output: 0

Explanation:

Simulate the process starting at instruction 0:

• At index 0: Instruction is "jump", move to index 0 + 3 = 3.

• At index 3: Out of bounds. The process ends.

Example 3:

Input: instructions = "jump", values = 0

Output: 0

Explanation:

Simulate the process starting at instruction 0:

• At index 0: Instruction is "jump", move to index 0 + 0 = 0.

• At index 0: Already visited. The process ends.

Constraints:

• n == instructions.length == values.length

• <code>1 <= n <= 10⁵</code>

• instructions[i] is either "add" or "jump".

• <code>-10⁵<= valuesi<= 10⁵</code>