#include <cstdio>

using namespace std;
char v[10];
int main()
{
    int n,c1,c2,a,ok;
    while(1)
    {
        scanf("%d%d%d",&n,&c1,&c2);
        if(n==0&&c1==0&&c2==0) break;
        else
        {
            a=0;
            while(n)
            {
                if(n%10==c1) v[a]=c2+'0';
                else v[a]=n%10+'0';
                n/=10;
                a++;
            }
            ok=0;
            for(int i=a-1;i>=0;i--)
            {
                if(v[i]!='0'&&ok==0) {ok=1;printf("%c",v[i]);}
                else if(v[i]=='0'&&ok!=0) printf("%c",v[i]);
            }
            printf("\n");
        }
    }
}