#include <iostream>

using namespace std;

int main()
{int n,c1,c2,val,c,p;
    cin>>n>>c1>>c2;
    while(n!=0 && c1!=0 && c2!=0)
       {p = 1; val = 0;
        while(n != 0)
        {c = n % 10;
        if(c == c1)
            c = c2;
        val = val + c * p;
        p = p * 10;
        n=n/10;
        }
        cout<<val;
        cin>>n>>c1>>c2;}

    return 0;
}