What's wrong in this case one testcase showing wrong ans

what’s wrong in this case one testcase showing wrong ans - https://ide.codingblocks.com/s/381212

Hey @hssharma2212000

for (long long int i = 1; i < n; ++i) { 
  
        if (diameter[i].start >= cur) {  //>= here
            cur = diameter[i].end; 
        } 
        else
            count++; 
    }

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