#include <stdio.h>

int main(void){


	long int n,nc=0;
	int c1,c2,cifra,p=1;
	scanf("%ld %d %d",&n,&c1,&c2);
	//scanf("%d",&c1);
	//scanf("%d",&c2);
	if(n!=0 &&( c1!=0 || c2!=0)){

		while (n>0){

			cifra=n%10;
			if (cifra==c1) cifra=c2;
			nc+=cifra*p;
			p*=10;

			n/=10;

		}
		
		printf("%ld",nc);
	} else if ( c1==n) {

		n=c2;
		printf("%ld",n);
	}

	return 0;
}