제출 #653881

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
653881		fahimcp495	Knapsack (NOI18_knapsack)	C++17	73 / 100	1099 ms	62948 KiB

knapsack

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

#define dbg(a)  cerr << #a << ": " << a << "\n"

using ll = long long;

void solve() {
  ll s, n;  cin >> s >> n;
  vector<array<ll, 2>> a(n * 40);
  int idx = 0;
  for (int i = 0; i < n; ++i) {
    ll v, w, k;  cin >> v >> w >> k;
    ll kk = 1;
    while (k > 0) {
      kk = min(kk, k);
      if (kk * w > s)  break;
      a[idx++] = {kk * v, kk * w};
      // a.push_back({kk * v, kk * w});
      k -= kk;
      kk *= 2;
    }
  }
  a.resize(idx);

  vector<ll> dp(s + 1);
  for (auto [v, w]: a) {
    for (ll i = s - w; i >= 0; --i) {
      dp[i + w] = max(dp[i + w], dp[i] + v);
    }
  }

  cout << *max_element(dp.begin(), dp.end()) << "\n";
}

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

  int tc = 1;
  for (int t = 1; t <= tc; ++t) {
    solve();
  }
}

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