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May I give the formula here. it is a multiplication of four term and then a division by 4.00 and i used .0lf to print the value.

OOPS! little joye sorry! I just solved the program today. using double I got WA and using long long I got ac. Is there any reason for it? And, can we use I64 data type (I have used never at uva). Is it allowed now?

For Anupam only : There is a math problem in Tofajjal Sir's Physics Book in HSC Level. At that math, it is shown that a boat can cross a river in two ways (as you said in your problem) and there the velocity of river is considered in both the cases. But the solution for your problem can not work wi...

Hello All, Thank to all for participating in the 2nd contest of us (FOUNDATION-ACM CONTEST-II). As usual, here goes some discussion about the problems: (A) Back to Intermediate Math Problemsetter: Anupam Bhattacharjee This is the easiest problem. Simple Geometric. (B) Repeated Josephus Problemsette...

and then use g++. first of all search "cygwin" in this board and you will get a lot of hints.

A very good book for beginners, but many pages may not be useful for a regular contestant as they already knew them:)

check whether the source node contains an obstacle. check whether the destination node has an obstacle.

Use DP for 10690 and 10664.

Yes, the problem is in your Bignum class. I got ac with the algorithm in 3:8s. You may use java biginteger

O O, I think I failed to understand what you were talking about. >>he can identify patterns of consecutive wins and elaborate a win-win strategy. A bet is an amount of money and is either winning (and this is recorded as a positive value). So shouldn't consecutive wins be a continuous subsequence of...

Yeah, I also think so. It is a positive subsequence for win conds.

There is a another same problem in volume 5 (536 tree recovery). Search for it.

[cpp] while(scanf("%d",&n)==1 && n){ flod = false ;//flod no need FOR(i,1,n){scanf("%d",&d ); if(d < 0 || d >= n){flod=true ;}//no need sum+=d ;} if(flod){printf("Not possible\n");continue ;}//no need if(sum==0){printf("Possible\n");continue ;...

Thanks schindlersp. Got AC in 0:00.219s. I had used all the steps u said except vImp which I checked after addition of all the inputs. That is the only reason I think to get such a huge runtime.