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

int main()
{
    int n,c1,c2;
    int i,l;
    char s[10];
    while(1)
    {
        cin>>n>>c1>>c2;
        if(n == 0 && c1 == 0 && c2 == 0) break;

        itoa(n, s, 10);

        l = strlen(s);
        for(i=0; i<l; i++)
        {
            if(s[i]-'0' == c1)
            {
                s[i] = c2+'0';
            }
        }

        cout<<atoi(s)<<'\n';
    }

    return 0;
}