#include<stdio.h>

int n, c1,c2, t, c, p;

int main() {
    while(1) {
        scanf("%d%d%d", &n, &c1, &c2);
        if(n == 0 && c1 == 0 && c2 == 0) break;
        t = 0;
        p = 1;
        if(n == c1) {
            printf("%d\n", c1);
            continue;
        }
        while(n != 0) {
            c = n % 10;
            n /= 10;
            if(c == c1) t = p * c2 + t;
            else t = p * c + t;
            p *= 10;
        }
        printf("%d\n", t);
    }
    return 0;
}