#include <iostream>
using namespace std;

int ile(string s,char z)  {
	int ile = 0;
	for (int i = 0; i<s.size(); i++)
	if (s[i]==z)
	ile++;
	return ile;
}

int main() {
	cout<< ile("CAATAAAAA", 'A') <<endl;
	cout<< ile("CAATAAAAA", 'C') <<endl;
cout<< ile("CAATAAAAA", 'T') <<endl;
cout<< ile("TCTAAAGATATCGGG", 'A') <<endl;
cout<< ile("TCTAAAGATATCGGG", 'C') <<endl;
cout<< ile("TCTAAAGATATCGGG", 'G') <<endl;
cout<< ile("TCTAAAGATATCGGG", 'T') <<endl;
	return 0;
}