#include <iostream>
#include <map>
#include <cstring>
 
int main() {
	std::map<char, int> alphaFrequency; 
 
	// fill map with chars A-Z (ascii 65 to 90)
	for (int i = 65; i < 91; i++)
	{
		alphaFrequency.insert(std::pair<char, int>(static_cast<char>(i), 0));
	}
 
	// get input
	char string[100] = {0};
	std::cin >> string;
 
	// iterate through chars in string, and increment the counter for the specific char it's on
	// if string[i] == 'A' then alphaFrequency['A'] is incremented
	for (int i = 0, len = strlen(string); i < len; i++)
	{
		alphaFrequency[toupper(string[i])] += 1;
	}
 
	std::cout << alphaFrequency['A'];
 
	return 0;
}

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

YWJjYWJjYWJj

abcabcabc