Problem J
Labour Laws
Alexander works at his company’s HR department. As the working hours at his company are very flexible, the employees are allowed to work as many hours or as few as they want (within the legal constraints of course). The monthly salary for each employee thus depends on the time spent working. Therefore, one of Alexander’s monthly tasks is to collect the times each employee has worked on any given day, so that he can calculate and pay out the employees salaries every month.
Unfortunately, today one of his colleagues forgot to record her lunch break and cannot remember how much time she spent on her break. As Alexander does not want to put his colleague at a disadvantage, he wants to use the legally required minimum break time for his calculations.
While calculating the total time his coworker spent at work is easy, correctly calculating the legally required minimum break time can be tricky. Can you help Alexander determine the minimum time his coworker must have spent at lunch today? Note that the time spent at work is the time spent working plus the time spent in break.
Input
The input consists of:
-
One line with an integer $t$ ($0\leq t\leq 1440$), the number of minutes spent at work today.
Output
Output a single non-negative integer, the minimum number of minutes spent in break to make the work time legal.
| Sample Input 1 | Sample Output 1 |
|---|---|
495 |
30 |
| Sample Input 2 | Sample Output 2 |
|---|---|
360 |
0 |
| Sample Input 3 | Sample Output 3 |
|---|---|
540 |
30 |
| Sample Input 4 | Sample Output 4 |
|---|---|
0 |
0 |
