Submission #1109341

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109341		greenbinjack	Knapsack (NOI18_knapsack)	C++17	73 / 100	1086 ms	2820 KiB

knapsack

#pragma GCC optimize("Ofast,unroll-loops")

#include <bits/stdc++.h>
using namespace std;

#define all(v) v.begin(), v.end()

using LL = long long;

int main() {
  cin.tie(nullptr)->ios_base::sync_with_stdio(false); 

  LL s, n;
  cin >> s >> n;
  vector <LL> weight (n), val (n), copy (n);
  for (int i = 0; i < n; i++) cin >> val[i] >> weight[i] >> copy[i];

  vector <LL> dp (s + 1), ndp (s + 1);
  for (LL i = 1; i <= n; i++) {
    for (LL j = s; j >= 0; j--) {
      ndp[j] = dp[j];
      for (LL k = 1; k <= copy[i - 1] and k * weight[i - 1] <= s and k * weight[i - 1] <= j; k++) {  
        ndp[j] = max (ndp[j], dp[j - k * weight[i - 1]] + k * val[i - 1]);
      }
    }
    swap (dp, ndp);
  }

  cout << *max_element (all (dp)) << '\n';

  return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27