#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define int long long
#define pii pair<int, int>
using namespace std;
const int N = 5e5 + 5, M = 1e9 + 7;
int T, n, s, dp[2003];
main()
{
std::ios::sync_with_stdio(0);
cin.tie(0);
cin >> s >> n;
for(int i = 0; i < n; i++)
{
int v, w, k;
cin >> v >> w >> k;
for(int st = 0; st < w; st++)
{
deque<pii> d;
for(int j = 0, ind = st; ind <= s; j++, ind += w)
{
int val = dp[ind] - j * v;
while(!d.empty() && d.back().f <= val)
d.pop_back();
d.pb({val, j});
while(d.size() && d.front().s < j - k)
d.pop_front();
dp[ind] = d.front().f + j * v;
}
}
}
cout << dp[s] << '\n';
}
Compilation message (stderr)
knapsack.cpp:12:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
12 | main()
| ^~~~
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