Example 1

Example 2

Example 3

3 <= s.length <= 200s consists of lowercase English letters, spaces, and digits from 0 to 9, inclusive.The number of tokens in s is between 2 and 100, inclusive.The tokens in s are separated by a single space.There are at least two numbers in s.Each number in s is a positive number less than 100, with no leading zeros.s contains no leading or trailing spaces.Example 1

Example 2

Example 3

3 <= s.length <= 200s consists of lowercase English letters, spaces, and digits from 0 to 9, inclusive.The number of tokens in s is between 2 and 100, inclusive.The tokens in s are separated by a single space.There are at least two numbers in s.Each number in s is a positive number less than 100, with no leading zeros.s contains no leading or trailing spaces.