#include <bits/stdc++.h>
#pragma warning(disable : 4996)
long long MX = 1000000000000LL;
long long C[60][60];
int p[60];
int main() {
  long long n, t, x, Res = 0;
  int c = 0, m = 0, i, j;
  C[0][0] = 1;
  for (i = 1; i < 60; i++) {
    C[i][0] = 1;
    for (j = 1; j < 60; j++) {
      C[i][j] = C[i - 1][j - 1] + C[i - 1][j];
    }
  }
  scanf("%lld%lld", &n, &t);
  x = 1;
  while (1) {
    if (t == x) break;
    if (x > MX) break;
    x *= 2;
    c++;
  }
  if (x > MX) {
    printf("0\n");
    return 0;
  }
  c++;
  while (n) {
    p[m++] = n % 2;
    n /= 2;
  }
  p[1]++;
  for (i = 1; p[i] == 2; i++) {
    p[i + 1]++;
    p[i] = 0;
  }
  if (p[m + 1]) m += 2;
  if (p[m]) m++;
  for (i = m - 1; i >= 0; i--) {
    if (p[i] == 1) {
      Res += C[i][c];
      c--;
      if (c < 0) break;
    }
  }
  if (t == 1) Res--;
  printf("%lld\n", Res);
}
