To take mod of negative numbers

#1

how to take mod of negative numbers?

#2

I assume you mean how to compute the mod of a negative number which is produced as a result of some subtraction in code. So, in that case, you just take mod of number and then check if the result is less than 0, if it is less than 0 then just add the modular number.

Ex:-
int res = a % b;
if(res < 0)
res += b;

#3

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