#define _CRT_SECURE_NO_WARNINGS
#define _CRT_NONSTDC_NO_DEPRECATE
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <stdbool.h>
#include <limits.h>
#include <time.h>
#include <stddef.h>
#include <float.h>

#define N 10005
#define PI 3.14

int main()
{
    int tcase;

    scanf("%d", &tcase);

    while (tcase--)
    {
        unsigned long long sum = 0;
        unsigned long long n;

        scanf("%llu", &n);

        while (n != 0)
        {
            if ((n % 10) % 2 == 0)
            {
                sum += n % 10;
            }
            n /= 10;
        }

        printf("%d\n", sum);
    }

    return 0;
}