3536 矩形总面积

3536 矩形总面积

⭐️难度：困难
🌟考点：2023、模拟、省赛、计算几何
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import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int x1 = sc.nextInt();
        int y1 = sc.nextInt();
        int x2 = sc.nextInt();
        int y2 = sc.nextInt();
        int x3 = sc.nextInt();
        int y3 = sc.nextInt();
        int x4 = sc.nextInt();
        int y4 = sc.nextInt();

        // 先计算两个矩形总面积
        long sum = (long)(x2 - x1) * (y2 - y1) + (long)(x4 - x3) * (y4 - y3);

        // 计算重叠部分矩形的面积
        // 重叠矩形的长
        long length = (Math.min(x2,x4) - Math.max(x3 , x1));
        // 重叠矩形的宽
        long weight = (Math.min(y4,y2) - Math.max(y1 , y3));
        long sum2 = length * weight;
        if(length > 0 && weight > 0){
            System.out.println(sum-sum2);
        }else {
            System.out.println(sum);
        }
    }
}

🍎笔记