#include <stdio.h>
 
int main()
{
int n, m;
scanf("%d %d", &n, &m);
if(1 <= n &&  m <= 1000000000){
    if(m>n || m == n) printf("%d\n", 1);
    else if (n>m && n%m != 0){
        printf("%d\n", n/m+1);
    }
    else printf("%d\n", n/m+1);
}
else printf("Error\n");
  return 0;
}