import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        long x = sc.nextInt();
        int[] counts = new int[n];
        for (int i = 0; i < n; i++) {
            counts[i] = sc.nextInt();
        }
        int left = 0;
        int right = Integer.MAX_VALUE / 2;
        while (right - left > 1) {
            int m = (left + right) / 2;
            long y = m * x;
            boolean ok = true;
            long remain = 0;
            for (int i = 0; i < n; i++) {
                if (remain + counts[i] < y) {
                    ok = false;
                    break;
                }
                remain += counts[i] - y;
            }
            if (ok) {
                left = m;
            } else {
                right = m;
            }
        }
        System.out.println(left);
    }
}

class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}