Question

Lang
One of the streets in your city has a total of L street lights. Each light i
covers the street from Xi to Yi distance. Find the length of street covered
with light
1
Input Specification:
2
3
input1: L, denoting the number of street lights.
input2: An array of L* 2 elements. For each row i, (Xi, Yi) denote that th
street light i covers the distance from Xi to Yi.
4
1
5
6
7
00
Output Specification:
Your function should return the length of the street covered with light.
9
10
1
11
Example 1:
12
13
input1: 1,
input2: {{5,10 } }
]
Output: 5
Explanation:
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Answer 1

Answer:

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