is there any difference between
a[i][j]+=MAX(a[i][j-1],a[i-1][j]);
and a[i][j]=a[i][j]+MAX(a[i][j-1],a[i-1][j]);
in the problem ‘magic rankings’ if i use the latter one, my solution doesnt work.
my solution to the problem is in the following link
http://www.codechef.com/viewsolution/1675348
a=a+b and a+=b should not be any different. i have no idea why it is different in this case. Please tell me why… thanks in advance
Maybe there is problem in your MAX macro.
This is just a tip, I was told that good practice is to use brackets, try this:
#define MAX(x,y) (x>y?x:y)Thanks that worked…
incredibly foolish of me not to have done that.
You don’t need to award me karma points, you can accept and/or vote for the answer 
i would definitely recommend #define max(x,y) ((x)>(y)?(x):(y)) to prevent operator precedence problems.
see Operator Precedence Problems for an example.