542 | Поставка содовой воды






Java Solution:

import java.util.Scanner;
public class solution_9 {

    public static void main(String[] args){
        Scanner scn = new Scanner(System.in);        int e = scn.nextInt(), f = scn.nextInt();        int c = scn.nextInt(), fb = 0;        e = e + f;        while (c <= e){
            int n = e / c;            e = n + e % c;            fb += n;        }
        System.out.println(fb);    }

}