#include <stdio.h>

int main()
{
    int n,c1,c2;

    scanf("%d %d %d",&n,&c1,&c2);

    while (!(n==0 && c1==0 && c2==0))
    {

        int val=0,x=1;

        while (n>0)
        {
            int t = n%10;
            if (t==c1)
            {
                t=c2;
            }

            val=val+t*x;
            x*=10;
            n=n/10;
        }

        printf("%d\n",val);

        scanf("%d %d %d",&n,&c1,&c2);
    }

    return 0;
}