#include<cstdio>
#include<cstring>
using namespace std;
int v,m,n,f[400][400]={0};
int a,b,c;
void bag(int,int,int);
int main()
{
	//memset(f,127,sizeof(f));
	f[0][0]=0;
	scanf("%d%d%d",&v,&m,&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%d%d%d",&a,&b,&c);
		bag(a,b,c);
	}
	printf("%d",f[v][m]);
}
void bag(int a,int b,int c)
{
	for(int i=v;i>=0;i--)
	{
		for(int j=m;j>=0;j--)
		{
			int x=i+a,y=j+b;
			if(x>v) break;
			if(y>m) continue;
			{
			  if(f[x][y]<f[i][j]+c) 
			  f[x][y]=f[i][j]+c;
		    }
		}
	}
}
/**************************************************************
	Problem: 2075
	User: admin
	Language: C++
	Result: Accepted
	Time:81 ms
	Memory:1768 kb
****************************************************************/