#include <bits/stdc++.h>
using namespace std;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int S, N;
cin >> S >> N;
vector<int> dp(S + 1, 0);
for (int i = 0; i < N; ++i) {
int v, w, k;
cin >> v >> w >> k;
// Бинарное разбиение количества
for (int p = 1; k > 0; p <<= 1) {
int take = min(p, k);
for (int j = S; j >= w * take; --j) {
dp[j] = max(dp[j], dp[j - w * take] + v * take);
}
k -= take;
}
}
cout << *max_element(dp.begin(), dp.end()) << endl;
return 0;
}
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