Character Frequency Counter

In this problem, you are given a string that may contain letters, digits, and symbols. Your task is to compute the frequency of each character in the string, excluding spaces. The count is case-sensitive; that is, 'A' and 'a' are treated as different characters. You should then output the number of distinct characters (ignoring spaces), followed by each character and its frequency on a separate line. The characters must be printed in ascending order based on their ASCII values.

For instance, if the input is Hello World, the frequency counts are as follows:

• 'H': 1
• 'W': 1
• 'd': 1
• 'e': 1
• 'l': 3
• 'o': 2
• 'r': 1

Thus, the output should be:

7
H 1
W 1
d 1
e 1
l 3
o 2
r 1

Mathematically, for an input string S, ignoring spaces, for every character c, compute its frequency f(c). If K is the number of unique characters, first output K, then output each character c and f(c) in separate lines in increasing order of c (according to ASCII).

inputFormat

The input consists of a single line containing the string whose characters are to be counted.

outputFormat

The first line of the output is an integer K that denotes the number of distinct characters (excluding spaces). Each of the following K lines contains a character and its corresponding frequency separated by a space, listed in ascending order according to the character's ASCII value.## sample

Hello World

7
H 1
W 1
d 1
e 1
l 3
o 2
r 1

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