#include <iostream>
#include <cstring>
using namespace std;

int main()
{char a[20],c1,c2,b[10],lg,i;
int n1=8,n2=8,n3=8,inv,ok=1,p;
while(ok)
{
    cin>>n1>>n2>>n3;
    p=1;
    if(n1==0&&n2==0&&n3==0)
    {
        ok=0;
        break;
    }
    inv=0;
    while(n1)
    {
        if(n1%10==n2)
        {
            inv=inv+n3*p;
        }
        else
        {
            inv=inv+(n1%10)*p;
        }
        n1/=10;
        p*=10;
    }
    cout<<inv<<'\n';
}
    return 0;
}