P7067 [NWRRC 2014] Hiking in the Hills
Description
Helen is hiking with her friends in a highland. Their plan is to hike from their camp $A$ to a beautiful showplace $B$ .
Unfortunately, Helen started feeling dizzy due to altitude sickness. Help her group find a route such that the topmost height on that route is as small as possible.
Input Format
N/A
Output Format
N/A
Explanation/Hint
Time limit: 2 s, Memory limit: 256 MB.