#include <stdio.h>
#include <stdlib.h>

void secti1(void)
{
    char ca[1001], cb[1001];
    int a, b;

    scanf("%s %s", ca, cb);
    if (ca[0] == '0') a = 0;
                 else a = strlen(ca);
    if (cb[0] == '0') b = 0;
                 else b = strlen(cb);
    a += b;
    printf("%s + %s = ", ca, cb);
    if (a == 0) printf("0");
    for (; a > 0; a--)
        printf("1");
    printf("\n");
}

void secti(int sous)
{
    char ca[2001], cb[1001];
    int a, b, i;

     scanf("%s %s", ca, cb);
     a = strtol(ca, NULL, sous);
     b = strtol(cb, NULL, sous);
     a += b;

     printf("%s + %s = ", ca, cb);
     i = 0;
     if (a == 0) {
         ca[0] = '0';
	 i++;
     }
     while (a > 0) {
         b = a % sous;
	 a /= sous;
	 ca[i] = (b > 9) ? b - 10 + 'A' : b + '0';
         i++;
    }

    for (i--; i >= 0; i--) {
	 printf("%c", ca[i]);
    }
    printf("\n");
}

int main(void)
{
    int i;

    do {
        scanf("%d", &i);
        if (i > 1) secti(i);
	if (i == 1) secti1();
    } while (i > 0);
    
    return(0);
}