### PROBLEM LINKS

### DIFFICULTY

EASY

### EXPLANATION

This problem is the easiest problem in the set. We take the price for each menu, and check whether it is a Ciel number naively. For example, we can take the price as the last element by splitting each line by a single space.

### SETTER’S SOLUTION

Can be found here.

### TESTER’S SOLUTION

Can be found here.