#include <map>
#include <iostream>

int main(int argc, char** argv)
{
	if(argc < 2)
	{
		std::cout << "Usage: " << argv[0] << " <ciphertext>" << std::endl;
		return 0;
	}
	char* ciphertext = argv[1];
	std::map<char, int> letters;

	for(int i = 0; ciphertext[i] != 0; ++i)
	{
		if(letters.contains(ciphertext[i]))
		{
			letters[ciphertext[i]]++;
		}
		else
		{
			letters[ciphertext[i]] = 1;
		}
	}
	for(auto& [key, value] : letters)
	{
		std::cout << key << ": " << value << std::endl;
	}
	return 0;
}