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