#include <stdio.h>
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <cstring>

using namespace std;

char sir[20];

int main() {

	#ifndef ONLINE_JUDGE
	freopen("p.in", "r", stdin);
	freopen("p.out", "w", stdout);
	#endif

	
	while(1) {
		
		memset(sir, 0, sizeof(sir));
		int c1, c2;
		scanf("%s %d %d\n", sir+1, &c1, &c2);
		if (strlen(sir+1) == 1 && sir[1] == '0' && c1 == 0 && c2 == 0) {
			break;
		}

		int sol = 0;
		for (int i = 1; i <= strlen(sir+1); ++i) {
			if (sir[i] - '0' == c1) {
				sir[i] = c2 + '0';
			}
			sol = sol * 10 + sir[i] - '0';
		}

		printf("%d\n", sol);
	}

	return 0;
}