#include <iostream>
using namespace std;
struct ura{
int v, w, k;
}v[100001];
int dp[10001];
int main()
{
int s, n;
cin >> s >> n;
for(int i = 1; i <= n; i++){
cin >> v[i].v >> v[i].w >> v[i].k;
if(v[i].w > s){
i--;
n--;
}
}
bool flag = true;
while(flag){
flag = false;
for(int i = 1; i <= n; i++){
if(v[i].k >= 3){
n++;
v[n].v = v[i].v;
v[n].w = v[i].w;
v[n].k = v[i].k / 3;
v[i].k = v[i].k % 3;
flag = true;
}
}
}
for(int i = 1; i <= n; i++){
for(int j = s; j >= 1; j--){
for(int k = v[i].k; k >= 1; k--){
if(j + (k * v[i].w) <= s){
dp[j + (k * v[i].w)] = max(dp[j + (k * v[i].w)], dp[j] + (k * v[i].v));
}
}
}
}
cout << dp[s] << "\n";
return 0;
}
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