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4163: MEX Queries

内存限制：256 MB 时间限制：2 S
题面：传统 评测方式：文本比较 上传者：
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题目描述

time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
You are given a set of integer numbers, initially it is empty. You should perform n queries.
There are three different types of queries:
  • 1 l r − Add all missing numbers from the interval [l,r]
  • 2 l r − Remove all present numbers from the interval [l,r]
  • 3 l r − Invert the interval [l,r] − add all missing and remove all present numbers from the interval [l,r]
After each query you should output MEX of the set − the smallest positive (MEX ≥1) integer number which is not presented in the set.
Input
The first line contains one integer number n (1≤n≤105).
Next n lines contain three integer numbers t,l,r (1≤t≤3,1≤l≤r≤1018) − type of the query, left and right bounds.
Output
Print MEX of the set after each query.
Examples
Input
3
1 3 4
3 1 6
2 1 3
Output
1
3
1
Input
4
1 1 3
3 5 6
2 4 4
3 1 6
Output
4
4
4
1
Note
Here are contents of the set after each query in the first example:
  1. {3,4} − the interval [3,4] is added
  2. {1,2,5,6} − numbers {3,4} from the interval [1,6] got deleted and all the others are added
  3. {5,6} − numbers {1,2} got deleted

输入样例 复制

输出样例 复制

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