intervals = input().split()
intervals = [i.split(',') for i in intervals]
intervals_post = [[int(j) for j in i] for i in intervals]
intervals_post.s
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import java.util.Scanner;
import java.util.*;
import java.util.stream.Collectors;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public
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