#include <cstdio>

using namespace std;

int nr, c1, c2, sol[30];

int main() {
    #ifndef ONLINE_JUDGE
    freopen("input.txt","r", stdin);
    #endif // ONLINE_JUDGE

    scanf("%d %d %d", &nr, &c1, &c2);

    while(nr != 0 || c1 != 0 || c2 != 0) {
        sol[0] = 0;

        while(nr) {
            sol[++sol[0]] = nr % 10;
            nr /= 10;
        }

        for(int i = 1; i <= sol[0]; i++) {
            if(sol[i] == c1) sol[i] = c2;
        }

        while(sol[0] > 0 && sol[sol[0]] == 0) {
            sol[0]--;
        }

        for(int i = sol[0]; i > 0; --i) {
            printf("%d", sol[i]);
        }

        if(sol[0] == 0) printf("0\n");

        printf("\n");

        scanf("%d %d %d", &nr, &c1, &c2);
    }

    return 0;
}