#include <stdio.h>

int main() {
    int upc[12];
    
    for (int i = 0; i < 12; i++) {
        scanf("%d", &upc[i]);
    }

    int odd_sum = 0;
    for (int i = 0; i < 11; i += 2) {
        odd_sum += upc[i];
    }
    int step1 = odd_sum * 3;

    int even_sum = 0;
    for (int i = 1; i < 10; i += 2) {
        even_sum += upc[i];
    }
    int step2 = step1 + even_sum;

    int last_digit = step2 % 10;
    int check_digit;
    if (last_digit == 0) {
        check_digit = 0;
    } else {
        check_digit = 10 - last_digit;
    }

    printf("\nHasil Langkah 1 : %d\n", step1);
    printf("Hasil Langkah 2 : %d\n", step2);
    printf("Check Digit Hitungan : %d\n", check_digit);
    printf("Check Digit Barcode  : %d\n\n", upc[11]);

    for (int i = 0; i < 12; i++) {
        printf("%d ", upc[i]);
    }

    if (check_digit == upc[11]) {
        printf("benar\n");
    } else {
        printf("salah\n");
    }

    return 0;
}