public class atCoder {
    public static void main (String[] args){
       int a = 2;
       int b = 5;
       walk(a,b);
    }
 
    static void walk(int a, int b){
        int walk = (b / a);
       
        if(b % a != 0){
            walk += 1;
        }
 
        System.out.println(walk);
    }
}