Fundamental doubt of memset

#1

with reference to codforces round 630 div2 problem B,i have a fundamental doubt that memset doesnt works but normal initialisation works…P.S I have declared int as long long

#2

Hey,there might be some other problem with your code other than with memset


In this code i am using the same code as yours and it works fine.

#3

mayb because of the template memset is not working…but there is some problem with memset only

#4

Yes i think that it is due to template. Since it is working fine without template.

#5

@Mohitpandey29
The problem is occuring because in your first code, ans is a pointer. You allocated it memory dynamically.
When you run the statement,
memset(ans, -1ll, sizeof(ans));

It takes the size of that of a pointer. Which in this case would be equal to sizeof(ll). It would only assign -1 to first box of ans.

To correct this, try
memset(ans, -1ll , sizeof(ll) * n);

#6

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