Submission #1201561

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201561		spampots	Knapsack (NOI18_knapsack)	C++20	17 / 100	1 ms	328 KiB

knapsack

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

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;

const int MOD = 1e9 + 7;
const int INF = INT_MAX;
const ll LINF = LLONG_MAX;

#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) v.begin(), v.end()
#define rep(i, a, b) for (int i = a; i < b; ++i)

void solve() {
    int s, n;
    cin >> s >> n;
    int v[n], w[n], k[n];
    rep(i, 0, n) cin >> v[i] >> w[i] >> k[i];

    vector<int> dp(s + 1, -INF);
    dp[0] = 0;

    for (int i = 0; i < n; ++i) {
        for (int l = s; l >= 0; --l) {
            int count = k[i];
            for (int power = 1; count > 0; power *= 2) {
                int j = min(power, count);
                if (j * w[i] > l) break;
                dp[l] = max(dp[l], dp[l - j * w[i]] + j * v[i]);
                count -= j;
            }
        }
    }

    int ans = 0;
    for (int i = 0; i <= s; ++i) {
        ans = max(ans, dp[i]);
    }
    cout << ans << endl;
}

int main() {
    fast;

    int t = 1;
    while (t--) {
        solve();
    }

    return 0;
}

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