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

int main()
{
    int n, a, b, dig, x, cf;
    scanf("%d%d%d",&n,&a,&b);
    while(n!=0 || a!=0 || b!=0) {
          x=cf=0;
          while(n>0) {
            dig=n%10;
            if(dig==a)
                dig=b;
            x*=10;
            x+=dig;
            n/=10;
            cf++;
          }
          while(x%10==0) {
            x/=10; cf--;
          }
          while(cf>0) {
                printf("%d",x%10);
                x/=10;
                cf--;
          }
          scanf("%d%d%d",&n,&a,&b);
    }
    return 0;
}