#include<stdio.h>
#define FOR(i, a, b) for(i = a; i <= b; i++)
#define NR  5000000
int  l, d;
long A[NR];
int main()
{
    int  i, nr =0;

    freopen("pascal.in",  "r", stdin);
    freopen("pascal.out",  "w", stdout);

    scanf("%d %d", &l, &d);
    FOR(i, 0, l + 1)
    {
        A[i] = 2 * l *(l + 1)/ (((l - i)*(l - i + 1))*(i *(i + 1)));
        if(A[i] % d == 0)
            nr++;
    }
    printf("%d", nr);
    return 0;
}