My rank in previous contest is 43 and my rating increases only 42

Describe your issue

My rank in previous contest is 43 and my rating increases only 42 and another profile with rank 44 and their rating increases +112 please tell me why there is difference of rating even my rank is better than their rank. please rejudge the rating of my profile

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Additional info

link of my profile :- vishal_707 | CodeChef User Profile for vishal khatri | CodeChef