[Group] title 18NOIP popularity statistics

Description [title]
Kaikai just wrote a wonderful essay, I wonder how many characters in the title of this essay?

Note: The title may contain upper and lower case letters, numbers, characters, spaces and line breaks. When the title character statistics, spaces and line breaks are not counted.

[Enter]
enter only one line, a string $s$。

[Output]
output only one line containing an integer that is the number of characters essay title (no spaces and line breaks).

[Input] Sample
234
[output] Sample
3
[Note]
[Sample 1] Description

A total of title $3$ characters, which $3$ characters are numeric characters.

Sample input [2]

Ca 45
[2] Sample Output

4
[Description] Sample 2

A total of title $5$ characters, including $1$ uppercase letters, $1$ lowercase letters and $2$ numeric characters, as well as $1$ spaces. Because spaces are not included in the results, so the effective number of characters for the title $4$ Ge.

[Agreed] with the scale data

Provision $|s|$ A string representing the $s$ length (i.e., the character string and the number of spaces).

For 40% of the data, $1 ≤ |s| ≤ 5$ , to ensure that input for the end of the line numeric characters and line breaks.

For 80% of the data, $1 ≤ |s| ≤ 5$ , the input may only contain upper and lower case letters, numeric characters and the end of the line newline.

To 100% of the data, $1 ≤ |s| ≤ 5$ , the input may contain upper and lower case letters, numbers end characters, spaces, line breaks and line.

#include<bits/stdc++.h>
using namespace std;
long long ans; 
string s;
int main(){
	getline(cin, s);
	int len = s.size();
	for(int i=0; i<len; i++){
		if(s[i] != ' ')
			++ans;
	}
	printf("%lld", ans);
	return 0;
}