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How is this python code calculating large factorials so fast and without memory limit error?
Link to the problem : https://www.codechef.com/FCF32020/problems/PATHWAY
Link to the code : https://www.codechef.com/viewsolution/38865614
In this code , how can python compute factorials of (N+M) ( N+M is in the order of 10^5 ) so fast? Can anyone explain this ? How did the python interpreter optimize it ?
