Gas and Minerals

An Artifact that could turn the tide of the war was discovered in one of the distant Terran colonies. Meanwhile, the intelligence service reports that a Zerg swarm is moving towards the colony. It is necessary to protect the Artifact at all costs before the arrival of reinforcements.

You have $m$ units of minerals and $g$ units of Vespen gas. In addition, there are $n$ types of defensive buildings available for construction. A building of type $i$ requires $a_i$ units of minerals and $b_i$ units of gas to construct, and increases the defenses of the base by $c_i$ units. You can construct any number of buildings (including zero) of any type, provided that the total costs of minerals and gas for all buildings will not exceed $m$ and $g$, respectively.

Determine what the maximum total building defense capability can be achieved under the given constraints.

The first line contains three integers $m$, $g$ and $n$ --- the number of available units of minerals and gas, respectively, and the number of building types ($0 \le m \le 1000$, $0 \le g \le 1000$, $1 \le n \le 10$).

The $i$ th of the following $n$ lines contains three integers $a_i$, $b_i$ and $c_i$ --- the amount of units of mineral and gas are needed to construct a building of the $i$-th type and its defenses ($1 \le a_i \le 100$, $0 \le b_i \le 100$, $0 \le c_i \le 100$).

Print a single integer --- the maximum total building defense capability that can be achieved.

In the first example, the optimum is provided by the construction of one building of type $2$ and one building of type $3$.

In the second example, it is most profitable to construct one building of type $1$ and two buildings of type $3$.