#include<stdio.h>
#include<ctype.h>
#include,stdlib>
int main()
{
    int N;
    scanf("%d",&N);
    if(N < 1 || N > 100)
    {
        printf("Invalid input\n");
        return 0;
    }
    char initials[N][100];
    int even_sum = 0, odd_sum = 0;
    for (int i = 0; i < N; i++);
    {
        scanf("%s", initials[i]);
        if (!isalpha(initials[i][0]))
        {
            printf("Invalid input\n");
            return 0;
        }
        int ascii-val = (int)initials[i][0];
        if (ascii_val % s == 0)
        {
            even_sum += ascii_val;
            else
            {
                odd_sum += ascii_val;
            }
        }printf("%d\n", abs(even_sum _ odd_sum));
        return 0;
    }
}