Enter a list of student names in one line separated by a space. Determine that at least one name in this list starts and ends with the same letter (case insensitive). Implement the program using a while loop and a break statement. Print YES if the condition is met and NO otherwise.

def check_same_letter(names):
  first_letter = ''
  for n in names:
    if n[0] == n[-1]:
      first_letter += n[0]
      break
  return first_letter != ''
  
check_same_letter(['molly', 'jordan'])