#include <bits/stdc++.h>
using namespace std;
int main() {
  long long M, T;
  cin >> M >> T;
  long long vv = 1, log = 1;
  for (; vv < T; vv <<= 1LL, ++log)
    ;
  if (vv != T) {
    cout << 0 << endl;
    return (0);
  }
  long long dp[61][61], calc = 0, ret = 0LL;
  for (int i = 0; i <= 60; i++) {
    dp[i][0] = 1;
    for (int j = 1; j <= i; j++) {
      dp[i][j] = dp[i - 1][j] + dp[i - 1][j - 1];
    }
  }
  for (int i = 60; i >= 0; i--) {
    if (log < 0) break;
    if (calc + (1LL << i) <= M + 1) {
      ret += dp[i][log--];
      calc += (1LL << i);
    }
  }
  cout << ret + (log == 0) - (T == 1) << endl;
}
