Please help with Snake Eating.(3 days spent ,no solution)

help
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1

I have been trying the Snake Eating question for 3 days now.I’m still getting a TLE.Please help. I want to solve this question really bad.My latest solution getting TLE CodeChef: Practical coding for everyone

2

Probably ur second binary search fn was wrong, I updated it slightly to get AC

your solution:CodeChef: Practical coding for everyone

Sorry i used lower_bound,u could try it with ur fn too.