#include <stdio.h>
#define MIDA 10
int canvi_base(int n, int b) {
	int v[MIDA];
	int i, l, s=0;
	for(i=0;n>0;i++) {
		v[i]=n%10;
		n=n/10;
	}
	l = i;
	for(i=l-1;i>=0;i--) {
		s = s*b;
		s = s+v[i]%b;
	}
	return s;
}

main(){
	int n,b;
	scanf("%d %d", &n, &b);
	printf("[%d]\n", canvi_base(n,b));
}