Hello to all,today I solve problem A. Greg and Array and I have and misunderstanding: I have two submission,one get accepted and another get wrong answer on test 11.
the difference between this both submission is the line below:
for (i=1;i<=n;i++) dp[i]=dp[i]+dp[i-1];
if I change
n with m I get Accepted,Can someone explain me why,I didn't use element on position bigger than
m and I didn't exceed the limits of the array
I'm very interesting why this happens,because during the contest this mistake can cost me one problem.