#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
  int number_of_doors = atoi(argv[1]);
  int number_of_passes = atoi(argv[2]);
  int open_doors = 0;

  for (int i = 1; i <= number_of_doors; i++) {
    int toggles = 0;
    for (int j = 1; j <= number_of_passes; j++) {
      toggles += i % j == 0 ? 1 : 0;
    }
    open_doors += toggles % 2;
  }

  printf("%d\n", open_doors);
}