#P126. 练21.3  神奇装置

练21.3  神奇装置

Description

A fish-finder is a magical device that helps anglers locate fish. It determines whether an object is a fish based on four consecutive depth readings, with the following rules:

  • If the four depths are strictly increasing, the fish-finder gives a "Fish Rising" alert.
  • If the four depths are strictly decreasing, the fish-finder gives a "Fish Diving" alert.
  • If the four depths are all equal, the fish-finder gives a "Fish At Constant Depth" alert.
  • Otherwise, the fish-finder gives a "No Fish" message.

Input Format

A line of four integers aa, bb, cc, dd (1a,b,c,d1001 \leq a,b,c,d \leq 100), representing the four depth readings.

Output Format

Output a single string, representing the alert message.

Sample

3 4 9 11
Fish Rising