Farmer John is taking some of his cows to the movies! While his truck has a limited capacity of C (100 <= C <= 5000) kilograms, he wants to take the cows that, in aggregate, weigh as much as possible without exceeding the limit C.
Given N (1 <= N <= 16) cows and their respective weights Wi, determine the weight of the heaviest group of cows that FJ can take to the movies.

* Line 1: Two space-separated integers: C and N
* Lines 2..N+1: Line i+1 contains a single integer: Wi

* Line 1: A single integer that is the weight of the heaviest group of cows that can go to the movies

259 5
81
58
42
33
61

242

81+58+42+61 = 242; this is the best possible sum