#include <stdio.h>

int NumberOfAttacks(int H,int A)
{
    int number_of_attacks_required=0 ;
    while(H > 0)
    {
        H = H - A;
        number_of_attacks_required++;
    }
    return number_of_attacks_required;
}

#include <stdio.h>
int main()
{
    int a[2];
    int number_of_attacks_required=0 ;
    scanf("%d %d", &a[0], &a[1]);
    printf("%d",NumberOfAttacks(a[0], a[1]));
    return 0;
}