You initially start with a binary string S0 which is of length N and has all 0s. You are then given U updates, which keep transforming the string. The i-th update transforms the string Si-1 into Si, and hence after all the U updates you will be left with SU. A single update is of the form (Li, Ri), which means that all the 1s in the range [Li, Ri] (both end points included) should be changed into 0s, and all the 0s in that range should be changed to 1s. You need to find out which among the U+1 binary strings: S0, S1, .., SU, is lexicographically the largest, and print that string. You have to develop a python program that output a single line containing one binary string

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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You initially start with a binary string S0 which is of length N and has all 0s. You are then given U updates, which keep transforming the string. The i-th update transforms the string Si-1 into Si, and hence after all the U updates you will be left with SU. A single update is of the form (LiRi), which means that all the 1s in the range [LiRi] (both end points included) should be changed into 0s, and all the 0s in that range should be changed to 1s. You need to find out which among the U+1 binary strings: S0, S1, .., SU, is lexicographically the largest, and print that string.

You have to develop a python program that output a single line containing one binary string

Sample Input:

10 10

9 10

6 10

9 10

1 8

3 5

3 3

3 4

3 9

4 8

7 7

Sample Output:

1111100011

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