#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("CAATACAAAA", 'A')<<endl;
	cout<<ile("CAATACAAAA", 'C')<<endl;
	cout<<ile("CAATACAAAA", 'T')<<endl;
	cout<<ile("TCTAAAGATATCGGG", 'A')<<endl;
		cout<<ile("TCTAAAGATATCGGG", 'C')<<endl;
			cout<<ile("TCTAAAGATATCGGG", 'T')<<endl;
				cout<<ile("TCTAAAGATATCGGG", 'G')<<endl;
	return 0;
}

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