#include <iostream>
#pragma GCC optimize(2)
#define ll long long

using namespace std;

const int N = 100, M = 200010;
ll n, m, v[N], w[N], p[N], a[N][5], f[M], ans;

int main()
{
	scanf("%lld%lld", &n, &m);
	for (int i = 1; i <= m; i ++ )
	{
		scanf("%lld%lld%lld", &v[i], &w[i], &p[i]);
		if (p[i] > 0)
		{
			if (a[i][1] == 0) a[i][1] = i;
			else a[i][2] = i;
		}
	}
	for (ll i = 1; i <= m; i ++ )
	{
		f[0] = f[1] = -2147483648;
		for (ll j = n; j >= v[i]; j -- )
		{
			if (p[i] == 0)
			{
				f[j] = max(f[j], f[j - v[i]] + w[i] * v[i]);
				if (j >= v[i] + v[a[i][1]])
				{
					f[j] = max(f[j], f[j - v[i] - v[a[i][1]]] + v[i] * w[i] + v[a[i][1]] * w[a[i][1]]);
				}
				if (j >= v[i] + v[a[i][2]])
				{
					f[j] = max(f[j], f[j - v[i] - v[a[i][2]]] + v[i] * w[i] + v[a[i][2]] * w[a[i][2]]);
				}
				if (j >= v[i] + v[a[i][1]] + v[a[i][2]])
				{
					f[j] = max(f[j], f[j - v[i] - v[a[i][1]] - v[a[i][2]]] + v[i] * w[i] + v[a[i][1]] * w[a[i][1]] + v[a[i][2]] * w[a[i][2]]);
				}
			}
		}
	}
	printf("%lld\n", f[n]);
	return 0;
}