Please tell me why this code is not working for this problem?

#1

Please tell me why this code is not working for this problem?
https://codeforces.com/problemset/problem/499/A

#2

@cbcao263 please explain your approach a bit.
The editorial approach is this

One can solve the problem using greedy algorithm: if we can skip x minutes at current moment without skipping any good moment — we do that, otherwise — watch another minute of the film.

#3

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