Seven Wonders

#include<iostream>
#include<algorithm>
using namespace std;

int main(){

string str;

cin >> str;

int sum = 0, cT=0, cC=0, cG=0, multi=0,smallest=0;

for(int i = 0; i<str.size(); i++){
   if(str[i] == 'T'){
    cT++;
   }
    if(str[i] == 'C'){
    cC++;
   }
   if(str[i] == 'G'){
    cG++;
   }


}

sum = (cG * cG) + (cC * cC) + (cT * cT);

if(cG < cC && cG < cT){
    smallest = cG;
}
else if(cC < cG && cC < cT){
    smallest = cC;
}
else if(cT < cC && cT < cG){
    smallest = cT;
}
if(smallest == 0 && cG == cC && cG == cT && cT ==  cC){
    smallest = cT;
}

cout << (smallest * 7) + sum;

}