#include <bits/stdc++.h>
#define sts(v) stable_sort(v.BE, v.E)
#define Rsts(v) stable_sort(v.rBE, v.rE)
#define rev(v) reverse(v.BE, v.E)
#define BE begin()
#define rBE rbegin()
#define E end()
#define rE rend()
#define pb push_back
#define ppb pop_back()
#define pf push_front
#define ppf pop_front()
#define F first
#define S second
using namespace std;
using ll = long long;
struct datos{
int val, w, k;
};
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int W, n; cin >> W >> n;
vector<datos> v(n + 1);
for(int i = 1; i <= n; i++){
int val, w, k; cin >> val >> w >> k;
v[i] = {val, w, k};
}
vector<ll> ans(W + 1);
for(int i = 1; i <= n; i++)
for(int w = W; w >= 0; w--)
for(int k = 1; k <= v[i].k && w + v[i].w * k <= W; k++){
int x = w + v[i].w * k;
ans[x] = max(ans[x], ans[w] + v[i].val * k);
}
ll res = 0;
for(int i = 0; i <= W; i++)
res = max(res, ans[i]);
cout << res;
return 0;
}
