int a(long n,long k,long i,long sum){
	if(i==n)
		sum=n*sum+k;
	else if(sum%(n-1)==0)
		sum=n*(sum)/(n-1)+k;
	else 
		return 0;
	if(i==1)
		return sum;
	else 
		sum=a(n,k,i-1,sum);
        return sum;
}
int main(){
	long n,k,sum=0,su=1;
	scanf("%ld %ld",&n,&k);
	if(k>=n)
		printf("wrong!");                  
	do{
	sum=a(n,k,n,su++);
	}while(sum==0);
	printf("%ld",sum);
	return 0;
}