poj 2709 贪心

import java.util.Arrays;

import java.util.Scanner;

public class Main2709 {
	static int Gray=0;
	
	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		while(in.hasNext()){
			int nCase=in.nextInt();
			if(nCase==0)
				break;
			int max=0;
			Integer[] array=new Integer[nCase];
			for(int i=0;i<nCase;i++){
				array[i]=in.nextInt();
			}
			Gray=in.nextInt();
			for(;Gray>0;Gray--){
				Arrays.sort(array);
				array[0]++;
				array[1]++;
				array[2]++;
			}
			for(int i=0;i<nCase;i++){
				if(array[i]>max)
					max=array[i];
			}
			int box=max/50;
			if(box*50<max)
				box++;
			System.out.println(box);
		}
		

	}

}