InterviewBit Problems   Largest Coprime Divisor : Unsolved

About the Largest Coprime Divisor : Unsolved category (1)
Judge is showing wrong ans for correct output (3)
Seems a good ques but Brute Forced worked in my case | C++ | Can someone tell an Optimal Solution (1)
For those who are confused with the problem statement (1)
I need Answers -_- (1)
Check This Code (1)
Hint or Solution in C (1)
Hint for solution (1)
Runtime error can't find the uncaught exception (1)
Shows runtime error on IB judge but works fine on local IDE (2)
Different answers in submit and custom test on 20 and 41 (1)
Why 1 cannot be the answer? (2)
Check this piece of code (3)
Showing wrong answers for correct output (2)
Showing wrong answer for correct output (1)
Wrong answer for correct output (1)
Explaination is unclear? (1)
Problem statement incomplete (2)