class Solution { public: int countGoodTriplets(vector<int>& arr, int a, int b, int c) { int ans=0; int n=arr.size(); for(int i=0;i<n-2;i++) { for(int j=i+1;j<n-1;j++) { for(int k=j+1;k<n;k++) { if(abs(arr[i]-arr[j])<=a && abs(arr[j]-arr[k])<=b && abs(arr[i]-arr[k])<=c) { ans++; } } } } return ans; } };
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