Submission #1268120

#	Time	Username	Problem	Language	Result	Execution time	Memory
1268120		zulmuw	Knapsack (NOI18_knapsack)	C++20	73 / 100	1096 ms	199900 KiB

knapsack

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

#define int long long 

struct Barang {
  int v, w, k;
};

signed main() {
  ios::sync_with_stdio(0); cin.tie(0);

  int s, n; cin >> s >> n;
  vector<Barang> bar(n);

  for (auto &[v, w, k]: bar) {
    cin >> v >> w >> k;
  }
  
  vector<Barang> nv;
  for (auto &[v, w, k]: bar) {
   
    int i = 1, tot = 0, kk = k;
    while (k > 0 && tot + i <= kk) {
      nv.push_back({v*i, w*i, i});
      tot += i;
        
      k -= i;
      i++;
    }
    if (k > 0) nv.push_back({v*k, w*k, k});
  }
  
  vector<int> dp(s + 1);
  dp[0] = 0;

  for (auto &[v, w, k] : nv) {
    for (int i=s; i>=w; --i) {
      dp[i] = max(dp[i], dp[i-w] + v);
    }
  }
  
  cout << dp[s];
}

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