/******************************************************************************
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*******************************************************************************/
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int main()
{
ll s,n;
cin>>s>>n;
vector<ll>ws;
vector<ll>vs;
for(ll i=0;i<n;i++){
ll v,w,k;
cin>>v>>w>>k;
ws.push_back(w);
vs.push_back(v);
}
vector<vector<ll>>dp(s+1,vector<ll>(n+1,0));
for(ll j=1;j<=s;j++){
for(int i=1;i<=n;i++){
if(j>=ws[i]){
dp[j][i]=max(dp[j][i],dp[j-ws[i]][i-1]+vs[i]);
}
dp[j][i]=max(dp[j][i],dp[j][i-1]);
}
}
cout<<dp[s][n];
return 0;
}
