#include <stdio.h>

int main()
{
    unsigned short H;
    unsigned short A;
    int number_of_attacks_required=0 ;
    scanf("%d %d",&H,&A);
    if((H % A)==0)
    {
        number_of_attacks_required = H/A ;
    }
    else
    {
        number_of_attacks_required = (H/A) +1;
    }
    printf("%d",number_of_attacks_required);
    return 0;
}