#include <stdio.h>

int calcBlackJackTotal (char firstCard, char secondCard);

int main(void) {
	// your code goes here

	char firstCard, secondCard;

	scanf("%c", &firstCard);
	scanf("%c", &secondCard);

	int total = calcBlackJackTotal(firstCard, secondCard);

   printf("%d", total);

	return 0;
}


int calcBlackJackTotal (char firstCard, char secondCard){

	char blackJackHand[2] = {firstCard, secondCard};

	int blackJackTotal = 0;

	int aceCount = 0;

	int i = 0;


	for (i; i < 2; i++) {


		if(blackJackHand[i] == 'T' || blackJackHand[i] == 'J' || blackJackHand[i] == 'Q' || blackJackHand[i] == 'K' ){

			blackJackTotal += 10;

		}//if 

		else if (blackJackHand[i] == 'A' && aceCount == 0){

			blackJackTotal += 11;
			aceCount++;

		}//elseif

		else if (blackJackHand[i] == 'A' && aceCount == 1){

			blackJackTotal += 1;
		

		}//elseif


	
		else if(blackJackHand[i] >= '2' && blackJackHand[i] <= '9'){

			blackJackTotal += (blackJackHand[i] - '0');

		}//elseif

	
		else{

			printf("*** Would be invalid, %c is not a valid card." , blackJackHand[i]);
		
			break;

		}//else


	}//for


	return blackJackTotal;

}// calcTotal