#include <iostream>
#include <fstream>
#include <string>
#include <cctype>
#include <cstring>
#include <algorithm>
#include <string.h>
 
using namespace std;
 
int main(int argc, char *argv[]) {
    ifstream stream(argv[1]);
 
   string str;
   while(getline(cin,str,'\n'))
   {
       int sum = 0;
       int length = str.length();
       for(int x = 0; x < length; x++) {
		char c = str[x];		
		if(isalpha(c))        	///only for characters 
			str[x] = tolower(str[x]);
 
	}
       int arr[26] = {0};
       int index = 0;
       for(int x = 0; x < length; x++)
       {
		char c = str[x];		
		if(isalpha(c)) {      ///only for characters 
		   index = str[x] - 97;
		   arr[index]++;
		}
       }
       sort(arr,arr+26);
       int num = 26;
 
       for(int x = 25; x >= 0; x--)
       {
           sum = sum + (arr[x]*num);
           num--;
       }
       cout << sum << endl;
   }
return 0;
}

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QUJiQ2NjCkdvb2QgbHVjayBpbiB0aGUgRmFjZWJvb2sgSGFja2VyIEN1cCB0aGlzIHllYXIhCklnbm9yZSBwdW5jdHVhdGlvbiwgcGxlYXNlIDopClNvbWV0aW1lcyB0ZXN0IGNhc2VzIGFyZSBoYXJkIHRvIG1ha2UgdXAuClNvIEkganVzdCBnbyBjb25zdWx0IFByb2Zlc3NvciBEYWx2ZXM=

ABbCcc
Good luck in the Facebook Hacker Cup this year!
Ignore punctuation, please :)
Sometimes test cases are hard to make up.
So I just go consult Professor Dalves