题解 | #字母统计#

#include <bits/stdc++.h>

using namespace std;

const int N = 30;

int cnt[N];

int main(){
	string str;
	while (cin >> str){
		for (int i=0; i<str.size(); i++){
			if (str[i] >= 'A' && str[i] <= 'Z')
				cnt[str[i] - 'A'] ++;
		}
		
		for (int i=0; i<26; i++){
			cout << char('A' + i)<< ":" << cnt[i] << endl; 
		}
	}
	return 0;
}