Canadian Computing Competition: 2025 Stage 1, Junior #2
The owner of a donut shop spends the day baking and selling donuts.
Given the events that happen over the course of the day, your job is to determine the number of donuts remaining when the shop closes.
Input Specification
The first line of input contains a non-negative integer,
The second line contains a positive integer,
The first line in the pair contains either the +
(plus) symbol, indicating that donuts have
been baked, or the -
(minus) symbol, indicating that donuts have been sold. The second
line in the pair contains a positive integer,
For each sale of donuts, the value of
Output Specification
Output the non-negative integer,
Sample Input
10
3
+
24
-
6
-
12
Sample Output
16
Explanation for Sample Output
The shop opened with
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