#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
int main(void)
{
    int stair,numofsteps,floor=1;
    scanf("%d %d",&stair,&numofsteps);
    while(stair>=numofsteps)
    {
        stair-=numofsteps;
        floor++;
    }
    printf("%d",floor);
}