/*
import java.util.*;
class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n=sc.nextInt(),k=sc.nextInt(), americano=0;
while(n/k != 0) {
americano += n/k;
n= n/k+n%k;
}
System.out.println(americano);
}
}
*/
/*
import java.util.*;
class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int k= sc.nextInt(), n= sc.nextInt();
int [] a = new int[30];
for(int i=0; i<k; i++) {
a[i]=sc.nextInt();
}
for(int i=k;i<n;i++) {
a[i]= a[i-1]+ a[i-2]+ a[i-3]+ a[i-4];
}
System.out.println(a[n-1]);
}
}
*/