#include <cstdio>

using namespace std;

int n, c1, c2, p, sol;

int main()
{
    while(1)
    {
        scanf("%d%d%d", &n, &c1, &c2);
        if(n==0 && c1==0 && c2==0)
            return 0;

        sol=0;p=1;
        if(n==0 && c1==0)
        {
            printf("%d\n", c2);
            continue;
        }

        while(n>0)
        {
            int x=n%10;
            if(x==c1)
                x=c2;
            sol=sol+p*x;
            p*=10;
            n=n/10;
        }

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

    return 0;
}