Maximum Element After Decreasing and Rearranging

class Solution {
public:
    int maximumElementAfterDecrementingAndRearranging(vector<int>& arr) {
        sort(arr.begin(), arr.end());
        int N = (int)arr.size();
        int ans = 1;
        for(int i = 1; i < N; ++i) ans = min(ans + 1, arr[i]);
        return ans;
    }
};