Balance Check of Alphanumeric Characters

Given an alphanumeric string, determine whether the number of letters is equal to the number of digits. If they are equal, output 1; otherwise, output 0. The solution should read the input from stdin and write the result to stdout.

The problem can be mathematically expressed as: \( |\{ c \in s : c \text{ is a letter} \}| = |\{ c \in s : c \text{ is a digit} \}| \). If this equality holds, print 1; otherwise, print 0.

Note that the input string may include an empty string. By convention, since both letter and digit counts are 0 for an empty string, they are considered equal, so the output should be 1.

inputFormat

The input consists of a single line containing a string s comprised of alphanumeric characters (letters and digits).

outputFormat

Output a single integer: 1 if the number of letters equals the number of digits, and 0 otherwise.

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