Concept of array named c [ ] is not clear

#1

c[ i ] = a[ i ] - b[ i ]: this is clear
but,
-c[ j ] = b[ j ] - a[ j ]: this is not clear,
and why the minus sign ? Please help me out as i am very new to competitive programming.

#2

@rishabh5544 it is basically like the above equation only, we just multiplied both sides by -1.

#3

why we are doing so ?

#4

@rishabh5544 watch the video again, it has been explained there only. Let me know if you have any confusion regarding it

#5

didn’t understand the explanation in the video
please explain the line i have commented…

#6

@rishabh5544
you need to make c[i] - c[j]
because the question is for a[i] - b[i]
so to make the equation equivalent to that, we have done this.
watch the implementation part as well it will become more clear

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#7

Now I get it, Thank you so much Ishita.

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