
#include <stdio.h>
int main()
{
    unsigned short H;
    unsigned short A;
    int number_of_attacks_required=0 ;
    scanf("%d %d", &H, &A);
    
    while(H > 0)
    {
        H = H - A;
        number_of_attacks_required++;
    }
    printf("%d",number_of_attacks_required);
    return 0;
}