Some test cases not passing

I’m not getting my mistake. Please help

hello @sukritbansal01

	for(int i=0; i<a.size()-1; i++){

this comparison is wrong.
here u need to compare current circle i with last circle that u have included in ur answer.
but here u r always comparing consecutive circle

I’m no able to get that how the 2 approaches are different. Also, by using below method, I’m getting wrong answer.

for(int i=1; i<a.size(); i++){ if(a[i].first<=a[i-1].second){ ans++; } }

refer this->

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