2019 Olympiada 01. Word

// Example program
#include <iostream>
#include <string>
#include <stdlib.h>
#include <math.h>
#include <sstream>

using namespace std;
int inputStringLength = 0;
int digitSum;
char tempString ;
void stringChars(string inputString) {
    int digit;
    inputStringLength=inputString.length();
    for(int i =0; i <=inputStringLength-1; i++)
    {
        tempString = inputString.at(i);

        digit = int(tempString);
        digit -=96;
        if(digit>=10)
        {
            int firstDigit = digit/10;
            int secondDigit = digit %10;
            int sumOfDigits = firstDigit + secondDigit;
            digit = sumOfDigits;
        }
        digitSum =digitSum + (digit* pow(2, i));
        digit =0;
    }
}
int main()
{
  string input;
  cin >> input;
  stringChars(input);
  if(digitSum % 2 == 0 )
  cout << "yes " << digitSum;
  else
    cout << "No";
}