package com.dota.treeMap;

import java.util.Map;
import java.util.TreeMap;

public class Solution {

}

/**
 * 2276. 统计区间中的整数数目
 */

class CountIntervals {
	TreeMap<Integer, Integer> map = new TreeMap<>();
	int cnt = 0;

	public CountIntervals() {

	}

	public void add(int left, int right) {
		Map.Entry<Integer, Integer> inte = map.floorEntry(right);
		while (inte != null && inte.getValue() >= left) {
			int l = inte.getKey();
			int r = inte.getValue();
			left = Math.min(l, left);
			right = Math.max(r, right);
			cnt -= r - l + 1;
			map.remove(l);
			inte = map.floorEntry(right);
		}

		cnt += (right - left + 1);
		map.put(left, right);
	}

	public int count() {
		return cnt;
	}
}