#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define int long long
typedef long long ll;
typedef long double lld;
typedef unsigned long long ull;
typedef long long ll;
typedef vector<long long> vll;
typedef vector<vector<long long>> vvll;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
#define F first
#define S second
#define PB push_back
#define rep(i,a,b) for(ll i = a; i < b; i++)
#define rrep(i,a,b) for(ll i = a; i >= b; i--)
const lld pi = 3.14159265358979323846;
const ll mod = 1000000007;
const ll llmax=1e18;
int32_t main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cout << fixed << setprecision(14);
// ll t; cin>>t;
ll t=1;
while(t--){
ll s,n; cin>>s>>n;
// vvll dp(n, vll(s+1,0));
vll dp(s+1,0);
rep(i,0,n){
ll v,w,k; cin>>v>>w>>k;
while(k--){
rrep(j, s, w){
dp[j] = max(dp[j], dp[j-w]+v);
}
}
}
cout<<dp[s]<<endl;
}
return 0;
}
