👨‍🏫 空调

👨‍🏫 参考题解

import java.util.Scanner;

public class Main
{
	static int N = (int) 1e5 + 10;
	static int[] a = new int[N];
	static int n;

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		n = sc.nextInt();
		for (int i = 1; i <= n; i++)
			a[i] = sc.nextInt();
		for (int i = 1; i <= n; i++)
		{
			int t = sc.nextInt();
			a[i] -= t;
		}
		for (int i = n; i > 1; i--)
			a[i] -= a[i - 1];
		long pos = 0, neg = 0;
		for (int i = 1; i <= n; i++)
			if (a[i] > 0)
				pos += a[i];
			else
			{
				neg -= a[i];
			}
		System.out.println(Math.max(pos, neg));
	}

}